From: =?UTF-8?q?Miloslav=20Trma=C4=8D?= To: Herbert Xu Cc: Neil Horman , Nikos Mavrogiannopoulos , linux-crypto@vger.kernel.org, =?UTF-8?q?Miloslav=20Trma=C4=8D?= Subject: [PATCH 4/4] Public key crypto implementation Date: Thu, 5 Aug 2010 22:17:57 +0200 Message-Id: <1281039477-29703-5-git-send-email-mitr@redhat.com> In-Reply-To: <1281039477-29703-1-git-send-email-mitr@redhat.com> References: <1281039477-29703-1-git-send-email-mitr@redhat.com> This part contains an RSA and DSA implementation and related infrastructure, based on the user-space libtomcrypt library. (Reviewing this in detail is probably premature, we are considering replacing the implementation by something based on libgcrypt, which is more actively maintained and has been probably more thorouhgly examined for vulnerabilities. Some functions are unused, but have not been trimmed yet.) --- libtomcrypt/hashes/crypt_hash_is_valid.c | 30 libtomcrypt/hashes/hash_get_oid.c | 78 libtomcrypt/hashes/hash_memory.c | 66 libtomcrypt/hashes/hash_memory_multi.c | 84 libtomcrypt/headers/tomcrypt.h | 82 libtomcrypt/headers/tomcrypt_argchk.h | 36 libtomcrypt/headers/tomcrypt_cfg.h | 135 + libtomcrypt/headers/tomcrypt_custom.h | 408 ++++ libtomcrypt/headers/tomcrypt_hash.h | 14 libtomcrypt/headers/tomcrypt_macros.h | 424 ++++ libtomcrypt/headers/tomcrypt_math.h | 13 libtomcrypt/headers/tomcrypt_misc.h | 23 libtomcrypt/headers/tomcrypt_pk.h | 359 +++ libtomcrypt/headers/tomcrypt_pkcs.h | 67 libtomcrypt/headers/tomcrypt_prng.h | 80 libtomcrypt/math/rand_prime.c | 80 libtomcrypt/misc/crypt/crypt_argchk.c | 28 libtomcrypt/misc/pk_get_oid.c | 40 libtomcrypt/misc/qsort.c | 247 ++ libtomcrypt/misc/zeromem.c | 34 libtomcrypt/pk/asn1/der/bit/der_decode_bit_string.c | 106 + libtomcrypt/pk/asn1/der/bit/der_encode_bit_string.c | 92 libtomcrypt/pk/asn1/der/bit/der_length_bit_string.c | 54 libtomcrypt/pk/asn1/der/boolean/der_decode_boolean.c | 47 libtomcrypt/pk/asn1/der/boolean/der_encode_boolean.c | 51 libtomcrypt/pk/asn1/der/boolean/der_length_boolean.c | 35 libtomcrypt/pk/asn1/der/choice/der_decode_choice.c | 182 + libtomcrypt/pk/asn1/der/ia5/der_decode_ia5_string.c | 96 libtomcrypt/pk/asn1/der/ia5/der_encode_ia5_string.c | 85 libtomcrypt/pk/asn1/der/ia5/der_length_ia5_string.c | 194 + libtomcrypt/pk/asn1/der/integer/der_decode_integer.c | 110 + libtomcrypt/pk/asn1/der/integer/der_encode_integer.c | 130 + libtomcrypt/pk/asn1/der/integer/der_length_integer.c | 82 libtomcrypt/pk/asn1/der/object_identifier/der_decode_object_identifier.c | 99 libtomcrypt/pk/asn1/der/object_identifier/der_encode_object_identifier.c | 111 + libtomcrypt/pk/asn1/der/object_identifier/der_length_object_identifier.c | 89 libtomcrypt/pk/asn1/der/octet/der_decode_octet_string.c | 91 libtomcrypt/pk/asn1/der/octet/der_encode_octet_string.c | 86 libtomcrypt/pk/asn1/der/octet/der_length_octet_string.c | 53 libtomcrypt/pk/asn1/der/printable_string/der_decode_printable_string.c | 96 libtomcrypt/pk/asn1/der/printable_string/der_encode_printable_string.c | 85 libtomcrypt/pk/asn1/der/printable_string/der_length_printable_string.c | 166 + libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_ex.c | 287 ++ libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_flexi.c | 394 +++ libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_multi.c | 140 + libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_ex.c | 335 +++ libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_multi.c | 139 + libtomcrypt/pk/asn1/der/sequence/der_length_sequence.c | 169 + libtomcrypt/pk/asn1/der/sequence/der_sequence_free.c | 66 libtomcrypt/pk/asn1/der/set/der_encode_set.c | 104 + libtomcrypt/pk/asn1/der/set/der_encode_setof.c | 163 + libtomcrypt/pk/asn1/der/short_integer/der_decode_short_integer.c | 68 libtomcrypt/pk/asn1/der/short_integer/der_encode_short_integer.c | 97 libtomcrypt/pk/asn1/der/short_integer/der_length_short_integer.c | 70 libtomcrypt/pk/asn1/der/utctime/der_decode_utctime.c | 127 + libtomcrypt/pk/asn1/der/utctime/der_encode_utctime.c | 83 libtomcrypt/pk/asn1/der/utctime/der_length_utctime.c | 46 libtomcrypt/pk/asn1/der/utf8/der_decode_utf8_string.c | 111 + libtomcrypt/pk/asn1/der/utf8/der_encode_utf8_string.c | 105 + libtomcrypt/pk/asn1/der/utf8/der_length_utf8_string.c | 83 libtomcrypt/pk/asn1/der/x509/der_decode_subject_public_key_info.c | 112 + libtomcrypt/pk/asn1/der/x509/der_encode_subject_public_key_info.c | 83 libtomcrypt/pk/dsa/dsa_export.c | 99 libtomcrypt/pk/dsa/dsa_free.c | 34 libtomcrypt/pk/dsa/dsa_import.c | 101 + libtomcrypt/pk/dsa/dsa_make_key.c | 125 + libtomcrypt/pk/dsa/dsa_sign_hash.c | 147 + libtomcrypt/pk/dsa/dsa_verify_hash.c | 126 + libtomcrypt/pk/dsa/dsa_verify_key.c | 100 + libtomcrypt/pk/pkcs1/pkcs_1_i2osp.c | 51 libtomcrypt/pk/pkcs1/pkcs_1_mgf1.c | 91 libtomcrypt/pk/pkcs1/pkcs_1_oaep_decode.c | 192 + libtomcrypt/pk/pkcs1/pkcs_1_oaep_encode.c | 164 + libtomcrypt/pk/pkcs1/pkcs_1_os2ip.c | 36 libtomcrypt/pk/pkcs1/pkcs_1_pss_decode.c | 168 + libtomcrypt/pk/pkcs1/pkcs_1_pss_encode.c | 157 + libtomcrypt/pk/pkcs1/pkcs_1_v1_5_decode.c | 110 + libtomcrypt/pk/pkcs1/pkcs_1_v1_5_encode.c | 95 libtomcrypt/pk/rsa/rsa_decrypt_key.c | 107 + libtomcrypt/pk/rsa/rsa_encrypt_key.c | 96 libtomcrypt/pk/rsa/rsa_export.c | 87 libtomcrypt/pk/rsa/rsa_exptmod.c | 147 + libtomcrypt/pk/rsa/rsa_free.c | 34 libtomcrypt/pk/rsa/rsa_import.c | 128 + libtomcrypt/pk/rsa/rsa_make_key.c | 105 + libtomcrypt/pk/rsa/rsa_sign_hash.c | 130 + libtomcrypt/pk/rsa/rsa_verify_hash.c | 170 + libtommath/LICENSE | 4 libtommath/bn_error.c | 47 libtommath/bn_fast_mp_invmod.c | 148 + libtommath/bn_fast_mp_montgomery_reduce.c | 172 + libtommath/bn_fast_s_mp_mul_digs.c | 107 + libtommath/bn_fast_s_mp_mul_high_digs.c | 98 libtommath/bn_fast_s_mp_sqr.c | 114 + libtommath/bn_mp_2expt.c | 48 libtommath/bn_mp_abs.c | 43 libtommath/bn_mp_add.c | 53 libtommath/bn_mp_add_d.c | 112 + libtommath/bn_mp_addmod.c | 41 libtommath/bn_mp_and.c | 57 libtommath/bn_mp_clamp.c | 44 libtommath/bn_mp_clear.c | 45 libtommath/bn_mp_clear_multi.c | 34 libtommath/bn_mp_cmp.c | 43 libtommath/bn_mp_cmp_d.c | 44 libtommath/bn_mp_cmp_mag.c | 55 libtommath/bn_mp_cnt_lsb.c | 53 libtommath/bn_mp_copy.c | 68 libtommath/bn_mp_count_bits.c | 45 libtommath/bn_mp_div.c | 292 ++ libtommath/bn_mp_div_2.c | 68 libtommath/bn_mp_div_2d.c | 97 libtommath/bn_mp_div_3.c | 79 libtommath/bn_mp_div_d.c | 115 + libtommath/bn_mp_dr_is_modulus.c | 43 libtommath/bn_mp_dr_reduce.c | 94 libtommath/bn_mp_dr_setup.c | 32 libtommath/bn_mp_exch.c | 34 libtommath/bn_mp_expt_d.c | 57 libtommath/bn_mp_exptmod.c | 112 + libtommath/bn_mp_exptmod_fast.c | 321 +++ libtommath/bn_mp_exteuclid.c | 82 libtommath/bn_mp_gcd.c | 105 + libtommath/bn_mp_get_int.c | 45 libtommath/bn_mp_grow.c | 58 libtommath/bn_mp_init.c | 47 libtommath/bn_mp_init_copy.c | 32 libtommath/bn_mp_init_multi.c | 59 libtommath/bn_mp_init_set.c | 32 libtommath/bn_mp_init_set_int.c | 31 libtommath/bn_mp_init_size.c | 49 libtommath/bn_mp_invmod.c | 43 libtommath/bn_mp_invmod_slow.c | 175 + libtommath/bn_mp_is_square.c | 109 + libtommath/bn_mp_jacobi.c | 105 + libtommath/bn_mp_karatsuba_mul.c | 167 + libtommath/bn_mp_karatsuba_sqr.c | 121 + libtommath/bn_mp_lcm.c | 60 libtommath/bn_mp_lshd.c | 67 libtommath/bn_mp_mod.c | 48 libtommath/bn_mp_mod_2d.c | 55 libtommath/bn_mp_mod_d.c | 27 libtommath/bn_mp_montgomery_calc_normalization.c | 59 libtommath/bn_mp_montgomery_reduce.c | 118 + libtommath/bn_mp_montgomery_setup.c | 59 libtommath/bn_mp_mul.c | 66 libtommath/bn_mp_mul_2.c | 82 libtommath/bn_mp_mul_2d.c | 85 libtommath/bn_mp_mul_d.c | 79 libtommath/bn_mp_mulmod.c | 40 libtommath/bn_mp_n_root.c | 132 + libtommath/bn_mp_neg.c | 40 libtommath/bn_mp_or.c | 50 libtommath/bn_mp_prime_fermat.c | 62 libtommath/bn_mp_prime_is_divisible.c | 50 libtommath/bn_mp_prime_is_prime.c | 83 libtommath/bn_mp_prime_miller_rabin.c | 103 + libtommath/bn_mp_prime_next_prime.c | 170 + libtommath/bn_mp_prime_rabin_miller_trials.c | 52 libtommath/bn_mp_prime_random_ex.c | 126 + libtommath/bn_mp_radix_size.c | 78 libtommath/bn_mp_radix_smap.c | 24 libtommath/bn_mp_rand.c | 55 libtommath/bn_mp_read_radix.c | 85 libtommath/bn_mp_read_signed_bin.c | 41 libtommath/bn_mp_read_unsigned_bin.c | 55 libtommath/bn_mp_reduce.c | 100 + libtommath/bn_mp_reduce_2k.c | 61 libtommath/bn_mp_reduce_2k_l.c | 62 libtommath/bn_mp_reduce_2k_setup.c | 47 libtommath/bn_mp_reduce_2k_setup_l.c | 44 libtommath/bn_mp_reduce_is_2k.c | 52 libtommath/bn_mp_reduce_is_2k_l.c | 44 libtommath/bn_mp_reduce_setup.c | 34 libtommath/bn_mp_rshd.c | 72 libtommath/bn_mp_set.c | 29 libtommath/bn_mp_set_int.c | 48 libtommath/bn_mp_shrink.c | 36 libtommath/bn_mp_signed_bin_size.c | 27 libtommath/bn_mp_sqr.c | 58 libtommath/bn_mp_sqrmod.c | 41 libtommath/bn_mp_sqrt.c | 81 libtommath/bn_mp_sub.c | 59 libtommath/bn_mp_sub_d.c | 93 libtommath/bn_mp_submod.c | 42 libtommath/bn_mp_to_signed_bin.c | 33 libtommath/bn_mp_to_signed_bin_n.c | 31 libtommath/bn_mp_to_unsigned_bin.c | 48 libtommath/bn_mp_to_unsigned_bin_n.c | 31 libtommath/bn_mp_toom_mul.c | 284 ++ libtommath/bn_mp_toom_sqr.c | 226 ++ libtommath/bn_mp_toradix.c | 75 libtommath/bn_mp_toradix_n.c | 88 libtommath/bn_mp_unsigned_bin_size.c | 28 libtommath/bn_mp_xor.c | 51 libtommath/bn_mp_zero.c | 36 libtommath/bn_prime_tab.c | 61 libtommath/bn_reverse.c | 39 libtommath/bn_s_mp_add.c | 109 + libtommath/bn_s_mp_exptmod.c | 252 ++ libtommath/bn_s_mp_mul_digs.c | 90 libtommath/bn_s_mp_mul_high_digs.c | 81 libtommath/bn_s_mp_sqr.c | 84 libtommath/bn_s_mp_sub.c | 89 libtommath/bncore.c | 36 libtommath/changes.txt | 397 +++ libtommath/pretty.build | 66 libtommath/tommath.h | 555 +++++ libtommath/tommath_class.h | 999 ++++++++++ libtommath/tommath_superclass.h | 76 210 files changed, 21075 insertions(+) diff --git a/crypto/userspace/libtomcrypt/hashes/crypt_hash_is_valid.c b/crypto/userspace/libtomcrypt/hashes/crypt_hash_is_valid.c new file mode 100644 index 0000000..d01d418 --- /dev/null +++ b/crypto/userspace/libtomcrypt/hashes/crypt_hash_is_valid.c @@ -0,0 +1,30 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_hash_is_valid.c + Determine if hash is valid, Tom St Denis +*/ + +/* + Test if a hash index is valid + @param idx The hash to search for + @return CRYPT_OK if valid +*/ +int hash_is_valid(const struct algo_properties_st *hash) +{ + return CRYPT_OK; +} + +/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_hash_is_valid.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/hashes/hash_get_oid.c b/crypto/userspace/libtomcrypt/hashes/hash_get_oid.c new file mode 100644 index 0000000..39f4372 --- /dev/null +++ b/crypto/userspace/libtomcrypt/hashes/hash_get_oid.c @@ -0,0 +1,78 @@ +/* LibTomCrypt, modular cryptographic library + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + */ +#include "tomcrypt.h" +#include + +/* + Returns the OID of the hash. + @param idx The hash identifier of the hash to search for + @return CRYPT_OK if valid +*/ + +static const oid_st sha1_oid = { + .OIDlen = 6, + .OID = { 1, 3, 14, 3, 2, 26 }, +}; + +static const oid_st md5_oid = { + .OIDlen = 6, + .OID = { 1, 2, 840, 113549, 2, 5, }, +}; + +static const oid_st sha224_oid = { + .OIDlen = 9, + .OID = { 2, 16, 840, 1, 101, 3, 4, 2, 4, }, +}; + +static const oid_st sha256_oid = { + .OIDlen = 9, + .OID = { 2, 16, 840, 1, 101, 3, 4, 2, 1, }, +}; + +static const oid_st sha384_oid = { + .OIDlen = 9, + .OID = { 2, 16, 840, 1, 101, 3, 4, 2, 2, }, +}; + +static const oid_st sha512_oid = { + .OIDlen = 9, + .OID = { 2, 16, 840, 1, 101, 3, 4, 2, 3, }, +}; + +int hash_get_oid(const struct algo_properties_st *hash, oid_st *st) +{ + switch (hash->algo) { + case NCR_ALG_SHA1: + memcpy(st, &sha1_oid, sizeof(*st)); + break; + case NCR_ALG_MD5: + memcpy(st, &md5_oid, sizeof(*st)); + break; + case NCR_ALG_SHA2_224: + memcpy(st, &sha224_oid, sizeof(*st)); + break; + case NCR_ALG_SHA2_256: + memcpy(st, &sha256_oid, sizeof(*st)); + break; + case NCR_ALG_SHA2_384: + memcpy(st, &sha384_oid, sizeof(*st)); + break; + case NCR_ALG_SHA2_512: + memcpy(st, &sha512_oid, sizeof(*st)); + break; + default: + return CRYPT_INVALID_ARG; + } + return CRYPT_OK; +} + +/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_hash_is_valid.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/hashes/hash_memory.c b/crypto/userspace/libtomcrypt/hashes/hash_memory.c new file mode 100644 index 0000000..a416de9 --- /dev/null +++ b/crypto/userspace/libtomcrypt/hashes/hash_memory.c @@ -0,0 +1,66 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file hash_memory.c + Hash memory helper, Tom St Denis +*/ + +/** + Hash a block of memory and store the digest. + @param hash The hash you wish to use + @param in The data you wish to hash + @param inlen The length of the data to hash (octets) + @param out [out] Where to store the digest + @param outlen [in/out] Max size and resulting size of the digest + @return CRYPT_OK if successful +*/ +int hash_memory(const struct algo_properties_st *hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen) +{ + int err; + struct hash_data hdata; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + if (*outlen < hash->digest_size) { + *outlen = hash->digest_size; + return CRYPT_BUFFER_OVERFLOW; + } + + err = cryptodev_hash_init( &hdata, hash->kstr, 0, NULL, 0); + if (err < 0) { + err = CRYPT_INVALID_HASH; + goto LBL_ERR; + } + + if ((err = _cryptodev_hash_update(&hdata, in, inlen)) < 0) { + err = CRYPT_ERROR; + goto LBL_ERR; + } + + err = cryptodev_hash_final(&hdata, out); + + *outlen = hash->digest_size; +LBL_ERR: + cryptodev_hash_deinit(&hdata); + + return err; +} + diff --git a/crypto/userspace/libtomcrypt/hashes/hash_memory_multi.c b/crypto/userspace/libtomcrypt/hashes/hash_memory_multi.c new file mode 100644 index 0000000..a914916 --- /dev/null +++ b/crypto/userspace/libtomcrypt/hashes/hash_memory_multi.c @@ -0,0 +1,84 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include +#include + +/** + @file hash_memory_multi.c + Hash (multiple buffers) memory helper, Tom St Denis +*/ + +/** + Hash multiple (non-adjacent) blocks of memory at once. + @param hash The hash you wish to use + @param out [out] Where to store the digest + @param outlen [in/out] Max size and resulting size of the digest + @param in The data you wish to hash + @param inlen The length of the data to hash (octets) + @param ... tuples of (data,len) pairs to hash, terminated with a (NULL,x) (x=don't care) + @return CRYPT_OK if successful +*/ +int hash_memory_multi(const struct algo_properties_st *hash, unsigned char *out, unsigned long *outlen, + const unsigned char *in, unsigned long inlen, ...) +{ + struct hash_data hdata; + int err; + va_list args; + const unsigned char *curptr; + unsigned long curlen; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + if (*outlen < hash->digest_size) { + *outlen = hash->digest_size; + return CRYPT_BUFFER_OVERFLOW; + } + + err = cryptodev_hash_init( &hdata, hash->kstr, 0, NULL, 0); + if (err < 0) { + err = CRYPT_INVALID_HASH; + goto LBL_ERR; + } + + va_start(args, inlen); + curptr = in; + curlen = inlen; + for (;;) { + /* process buf */ + if ((err = _cryptodev_hash_update(&hdata, curptr, curlen)) < 0) { + err = CRYPT_ERROR; + goto LBL_ERR; + } + /* step to next */ + curptr = va_arg(args, const unsigned char*); + if (curptr == NULL) { + break; + } + curlen = va_arg(args, unsigned long); + } + + err = cryptodev_hash_final(&hdata, out); + + *outlen = hash->digest_size; +LBL_ERR: + cryptodev_hash_deinit(&hdata); + va_end(args); + return err; +} + diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt.h b/crypto/userspace/libtomcrypt/headers/tomcrypt.h new file mode 100644 index 0000000..51fe804 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt.h @@ -0,0 +1,82 @@ +#ifndef TOMCRYPT_H_ +#define TOMCRYPT_H_ +#include +#include +#include +#include +#include + +/* use configuration data */ +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/* version */ +#define CRYPT 0x0117 +#define SCRYPT "1.17" + +/* max size of either a cipher/hash block or symmetric key [largest of the two] */ +#define MAXBLOCKSIZE 128 + +/* descriptor table size */ +#define TAB_SIZE 32 + +/* error codes [will be expanded in future releases] */ +enum { + CRYPT_OK=0, /* Result OK */ + CRYPT_ERROR, /* Generic Error */ + CRYPT_NOP, /* Not a failure but no operation was performed */ + + CRYPT_INVALID_KEYSIZE, /* Invalid key size given */ + CRYPT_INVALID_ROUNDS, /* Invalid number of rounds */ + CRYPT_FAIL_TESTVECTOR, /* Algorithm failed test vectors */ + + CRYPT_BUFFER_OVERFLOW, /* Not enough space for output */ + CRYPT_INVALID_PACKET, /* Invalid input packet given */ + + CRYPT_INVALID_PRNGSIZE, /* Invalid number of bits for a PRNG */ + CRYPT_ERROR_READPRNG, /* Could not read enough from PRNG */ + + CRYPT_INVALID_CIPHER, /* Invalid cipher specified */ + CRYPT_INVALID_HASH, /* Invalid hash specified */ + CRYPT_INVALID_PRNG, /* Invalid PRNG specified */ + + CRYPT_MEM, /* Out of memory */ + + CRYPT_PK_TYPE_MISMATCH, /* Not equivalent types of PK keys */ + CRYPT_PK_NOT_PRIVATE, /* Requires a private PK key */ + + CRYPT_INVALID_ARG, /* Generic invalid argument */ + CRYPT_FILE_NOTFOUND, /* File Not Found */ + + CRYPT_PK_INVALID_TYPE, /* Invalid type of PK key */ + CRYPT_PK_INVALID_SYSTEM,/* Invalid PK system specified */ + CRYPT_PK_DUP, /* Duplicate key already in key ring */ + CRYPT_PK_NOT_FOUND, /* Key not found in keyring */ + CRYPT_PK_INVALID_SIZE, /* Invalid size input for PK parameters */ + + CRYPT_INVALID_PRIME_SIZE,/* Invalid size of prime requested */ + CRYPT_PK_INVALID_PADDING /* Invalid padding on input */ +}; + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef __cplusplus + } +#endif + +#endif /* TOMCRYPT_H_ */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt.h,v $ */ +/* $Revision: 1.21 $ */ +/* $Date: 2006/12/16 19:34:05 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_argchk.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_argchk.h new file mode 100644 index 0000000..1b94434 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_argchk.h @@ -0,0 +1,36 @@ +/* Defines the LTC_ARGCHK macro used within the library */ +/* ARGTYPE is defined in mycrypt_cfg.h */ +#if ARGTYPE == 0 + +/* this is the default LibTomCrypt macro */ +void crypt_argchk(char *v, char *s, int d); +#define LTC_ARGCHK(x) if (!(x)) { crypt_argchk(#x, __FILE__, __LINE__); } +#define LTC_ARGCHKVD(x) LTC_ARGCHK(x) + +#elif ARGTYPE == 1 + +/* fatal type of error */ +#define LTC_ARGCHK(x) assert((x)) +#define LTC_ARGCHKVD(x) LTC_ARGCHK(x) + +#elif ARGTYPE == 2 + +#define LTC_ARGCHK(x) if (!(x)) { fprintf(stderr, "\nwarning: ARGCHK failed at %s:%d\n", __FILE__, __LINE__); } +#define LTC_ARGCHKVD(x) LTC_ARGCHK(x) + +#elif ARGTYPE == 3 + +#define LTC_ARGCHK(x) +#define LTC_ARGCHKVD(x) LTC_ARGCHK(x) + +#elif ARGTYPE == 4 + +#define LTC_ARGCHK(x) if (!(x)) return CRYPT_INVALID_ARG; +#define LTC_ARGCHKVD(x) if (!(x)) return; + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_argchk.h,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/08/27 20:50:21 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_cfg.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_cfg.h new file mode 100644 index 0000000..b750c8b --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_cfg.h @@ -0,0 +1,135 @@ +/* This is the build config file. + * + * With this you can setup what to inlcude/exclude automatically during any build. Just comment + * out the line that #define's the word for the thing you want to remove. phew! + */ + +#ifndef TOMCRYPT_CFG_H +#define TOMCRYPT_CFG_H + +#if defined(_WIN32) || defined(_MSC_VER) +#define LTC_CALL __cdecl +#else +#ifndef LTC_CALL + #define LTC_CALL +#endif +#endif + +#ifndef LTC_EXPORT +#define LTC_EXPORT +#endif + +LTC_EXPORT void LTC_CALL XQSORT(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)); + +/* certain platforms use macros for these, making the prototypes broken */ +#ifndef LTC_NO_PROTOTYPES + +/* you can change how memory allocation works ... */ +LTC_EXPORT void * LTC_CALL XMALLOC(size_t n); +LTC_EXPORT void * LTC_CALL XREALLOC(void *p, size_t n); +LTC_EXPORT void * LTC_CALL XCALLOC(size_t n, size_t s); +LTC_EXPORT void LTC_CALL XFREE(void *p); + +/* change the clock function too */ +LTC_EXPORT clock_t LTC_CALL XCLOCK(void); + +/* various other functions */ +LTC_EXPORT void * LTC_CALL XMEMCPY(void *dest, const void *src, size_t n); +LTC_EXPORT int LTC_CALL XMEMCMP(const void *s1, const void *s2, size_t n); +LTC_EXPORT void * LTC_CALL XMEMSET(void *s, int c, size_t n); + +LTC_EXPORT int LTC_CALL XSTRCMP(const char *s1, const char *s2); + +#endif + +/* type of argument checking, 0=default, 1=fatal and 2=error+continue, 3=nothing */ +#ifndef ARGTYPE + #define ARGTYPE 0 +#endif + +/* Controls endianess and size of registers. Leave uncommented to get platform neutral [slower] code + * + * Note: in order to use the optimized macros your platform must support unaligned 32 and 64 bit read/writes. + * The x86 platforms allow this but some others [ARM for instance] do not. On those platforms you **MUST** + * use the portable [slower] macros. + */ + +/* detect x86-32 machines somewhat */ +#if !defined(__STRICT_ANSI__) && (defined(INTEL_CC) || (defined(_MSC_VER) && defined(WIN32)) || (defined(__GNUC__) && (defined(__DJGPP__) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__i386__)))) + #define ENDIAN_LITTLE + #define ENDIAN_32BITWORD + #define LTC_FAST + #define LTC_FAST_TYPE unsigned long +#endif + +/* detects MIPS R5900 processors (PS2) */ +#if (defined(__R5900) || defined(R5900) || defined(__R5900__)) && (defined(_mips) || defined(__mips__) || defined(mips)) + #define ENDIAN_LITTLE + #define ENDIAN_64BITWORD +#endif + +/* detect amd64 */ +#if !defined(__STRICT_ANSI__) && defined(__x86_64__) + #define ENDIAN_LITTLE + #define ENDIAN_64BITWORD + #define LTC_FAST + #define LTC_FAST_TYPE unsigned long +#endif + +/* detect PPC32 */ +#if !defined(__STRICT_ANSI__) && defined(LTC_PPC32) + #define ENDIAN_BIG + #define ENDIAN_32BITWORD + #define LTC_FAST + #define LTC_FAST_TYPE unsigned long +#endif + +/* detect sparc and sparc64 */ +#if defined(__sparc__) + #define ENDIAN_BIG + #if defined(__arch64__) + #define ENDIAN_64BITWORD + #else + #define ENDIAN_32BITWORD + #endif +#endif + + +#ifdef LTC_NO_FAST + #ifdef LTC_FAST + #undef LTC_FAST + #endif +#endif + +/* No asm is a quick way to disable anything "not portable" */ +#ifdef LTC_NO_ASM + #undef ENDIAN_LITTLE + #undef ENDIAN_BIG + #undef ENDIAN_32BITWORD + #undef ENDIAN_64BITWORD + #undef LTC_FAST + #undef LTC_FAST_TYPE + #define LTC_NO_ROLC + #define LTC_NO_BSWAP +#endif + +/* #define ENDIAN_LITTLE */ +/* #define ENDIAN_BIG */ + +/* #define ENDIAN_32BITWORD */ +/* #define ENDIAN_64BITWORD */ + +#if (defined(ENDIAN_BIG) || defined(ENDIAN_LITTLE)) && !(defined(ENDIAN_32BITWORD) || defined(ENDIAN_64BITWORD)) + #error You must specify a word size as well as endianess in tomcrypt_cfg.h +#endif + +#if !(defined(ENDIAN_BIG) || defined(ENDIAN_LITTLE)) + #define ENDIAN_NEUTRAL +#endif + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_cfg.h,v $ */ +/* $Revision: 1.19 $ */ +/* $Date: 2006/12/04 02:19:48 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_custom.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_custom.h new file mode 100644 index 0000000..c537dc7 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_custom.h @@ -0,0 +1,408 @@ +#ifndef TOMCRYPT_CUSTOM_H_ +#define TOMCRYPT_CUSTOM_H_ + +#define LTC_NO_PROTOTYPES + +/* macros for various libc functions you can change for embedded targets */ +#ifndef XMALLOC + #ifdef malloc + #define LTC_NO_PROTOTYPES + #endif +#define XMALLOC(x) kmalloc(x, GFP_KERNEL) +#endif +#ifndef XREALLOC + #ifdef realloc + #define LTC_NO_PROTOTYPES + #endif +#define XREALLOC(x,y) krealloc(x,y,GFP_KERNEL) +#endif +#ifndef XCALLOC + #ifdef calloc + #define LTC_NO_PROTOTYPES + #endif +#define XCALLOC(x,y) kcalloc(x, y, GFP_KERNEL) +#endif +#ifndef XFREE + #ifdef free + #define LTC_NO_PROTOTYPES + #endif +#define XFREE kfree +#endif + +#ifndef XMEMSET + #ifdef memset + #define LTC_NO_PROTOTYPES + #endif +#define XMEMSET memset +#endif +#ifndef XMEMCPY + #ifdef memcpy + #define LTC_NO_PROTOTYPES + #endif +#define XMEMCPY memcpy +#endif +#ifndef XMEMCMP + #ifdef memcmp + #define LTC_NO_PROTOTYPES + #endif +#define XMEMCMP memcmp +#endif +#ifndef XSTRCMP + #ifdef strcmp + #define LTC_NO_PROTOTYPES + #endif +#define XSTRCMP strcmp +#endif + +#ifndef XCLOCK +#define XCLOCK clock +#endif +#ifndef XCLOCKS_PER_SEC +#define XCLOCKS_PER_SEC CLOCKS_PER_SEC +#endif + +#ifndef XQSORT + #ifdef qsort + #define LTC_NO_PROTOTYPES + #endif +#define XQSORT qsort +#endif + +/* Easy button? */ +#ifdef LTC_EASY + #define LTC_NO_CIPHERS + #define LTC_RIJNDAEL + #define LTC_BLOWFISH + #define LTC_DES + #define LTC_CAST5 + + #define LTC_NO_MODES + #define LTC_ECB_MODE + #define LTC_CBC_MODE + #define LTC_CTR_MODE + + #define LTC_NO_HASHES + #define LTC_SHA1 + #define LTC_SHA512 + #define LTC_SHA384 + #define LTC_SHA256 + #define LTC_SHA224 + + #define LTC_NO_MACS + #define LTC_HMAC + #define LTC_OMAC + #define LTC_CCM_MODE + + #define LTC_NO_PRNGS + #define LTC_SPRNG + #define LTC_YARROW + #define LTC_DEVRANDOM + #define TRY_URANDOM_FIRST + + #define LTC_NO_PK + #define LTC_MRSA + #define LTC_MECC +#endif + +/* Use small code where possible */ +/* #define LTC_SMALL_CODE */ + +/* Enable self-test test vector checking */ +#ifndef LTC_NO_TEST + #define LTC_TEST +#endif + +/* clean the stack of functions which put private information on stack */ +/* #define LTC_CLEAN_STACK */ + +/* disable all file related functions */ +/* #define LTC_NO_FILE */ + +/* disable all forms of ASM */ +/* #define LTC_NO_ASM */ + +/* disable FAST mode */ +/* #define LTC_NO_FAST */ + +/* disable BSWAP on x86 */ +/* #define LTC_NO_BSWAP */ + +/* ---> Symmetric Block Ciphers <--- */ +#ifndef LTC_NO_CIPHERS + +#define LTC_BLOWFISH +#define LTC_RC2 +#define LTC_RC5 +#define LTC_RC6 +#define LTC_SAFERP +#define LTC_RIJNDAEL +#define LTC_XTEA +/* _TABLES tells it to use tables during setup, _SMALL means to use the smaller scheduled key format + * (saves 4KB of ram), _ALL_TABLES enables all tables during setup */ +#define LTC_TWOFISH +#ifndef LTC_NO_TABLES + #define LTC_TWOFISH_TABLES + /* #define LTC_TWOFISH_ALL_TABLES */ +#else + #define LTC_TWOFISH_SMALL +#endif +/* #define LTC_TWOFISH_SMALL */ +/* LTC_DES includes EDE triple-LTC_DES */ +#define LTC_DES +#define LTC_CAST5 +#define LTC_NOEKEON +#define LTC_SKIPJACK +#define LTC_SAFER +#define LTC_KHAZAD +#define LTC_ANUBIS +#define LTC_ANUBIS_TWEAK +#define LTC_KSEED +#define LTC_KASUMI + +#endif /* LTC_NO_CIPHERS */ + + +/* ---> Block Cipher Modes of Operation <--- */ +#ifndef LTC_NO_MODES + +#define LTC_CFB_MODE +#define LTC_OFB_MODE +#define LTC_ECB_MODE +#define LTC_CBC_MODE +#define LTC_CTR_MODE + +/* F8 chaining mode */ +#define LTC_F8_MODE + +/* LRW mode */ +#define LTC_LRW_MODE +#ifndef LTC_NO_TABLES + /* like GCM mode this will enable 16 8x128 tables [64KB] that make + * seeking very fast. + */ + #define LRW_TABLES +#endif + +/* XTS mode */ +#define LTC_XTS_MODE + +#endif /* LTC_NO_MODES */ + +/* ---> One-Way Hash Functions <--- */ +#ifndef LTC_NO_HASHES + +#define LTC_CHC_HASH +#define LTC_WHIRLPOOL +#define LTC_SHA512 +#define LTC_SHA384 +#define LTC_SHA256 +#define LTC_SHA224 +#define LTC_TIGER +#define LTC_SHA1 +#define LTC_MD5 +#define LTC_MD4 +#define LTC_MD2 +#define LTC_RIPEMD128 +#define LTC_RIPEMD160 +#define LTC_RIPEMD256 +#define LTC_RIPEMD320 + +#endif /* LTC_NO_HASHES */ + +/* ---> MAC functions <--- */ +#ifndef LTC_NO_MACS + +#define LTC_HMAC +#define LTC_OMAC +#define LTC_PMAC +#define LTC_XCBC +#define LTC_F9_MODE +#define LTC_PELICAN + +#if defined(LTC_PELICAN) && !defined(LTC_RIJNDAEL) + #error Pelican-MAC requires LTC_RIJNDAEL +#endif + +/* ---> Encrypt + Authenticate Modes <--- */ + +#define LTC_EAX_MODE +#if defined(LTC_EAX_MODE) && !(defined(LTC_CTR_MODE) && defined(LTC_OMAC)) + #error LTC_EAX_MODE requires CTR and LTC_OMAC mode +#endif + +#define LTC_OCB_MODE +#define LTC_CCM_MODE +#define LTC_GCM_MODE + +/* Use 64KiB tables */ +#ifndef LTC_NO_TABLES + #define LTC_GCM_TABLES +#endif + +/* USE SSE2? requires GCC works on x86_32 and x86_64*/ +#ifdef LTC_GCM_TABLES +/* #define LTC_GCM_TABLES_SSE2 */ +#endif + +#endif /* LTC_NO_MACS */ + +/* Various tidbits of modern neatoness */ +#define LTC_BASE64 + +/* --> Pseudo Random Number Generators <--- */ +#ifndef LTC_NO_PRNGS + +/* Yarrow */ +#define LTC_YARROW +/* which descriptor of AES to use? */ +/* 0 = rijndael_enc 1 = aes_enc, 2 = rijndael [full], 3 = aes [full] */ +#define LTC_YARROW_AES 0 + +#if defined(LTC_YARROW) && !defined(LTC_CTR_MODE) + #error LTC_YARROW requires LTC_CTR_MODE chaining mode to be defined! +#endif + +/* a PRNG that simply reads from an available system source */ +#define LTC_SPRNG + +/* The LTC_RC4 stream cipher */ +#define LTC_RC4 + +/* Fortuna PRNG */ +#define LTC_FORTUNA +/* reseed every N calls to the read function */ +#define LTC_FORTUNA_WD 10 +/* number of pools (4..32) can save a bit of ram by lowering the count */ +#define LTC_FORTUNA_POOLS 32 + +/* Greg's LTC_SOBER128 PRNG ;-0 */ +#define LTC_SOBER128 + +/* the *nix style /dev/random device */ +#define LTC_DEVRANDOM +/* try /dev/urandom before trying /dev/random */ +#define TRY_URANDOM_FIRST + +#endif /* LTC_NO_PRNGS */ + +/* ---> math provider? <--- */ +#ifndef LTC_NO_MATH + +/* LibTomMath */ +#define LTM_LTC_DESC + +/* TomsFastMath */ +/* #define TFM_LTC_DESC */ + +#endif /* LTC_NO_MATH */ + +/* ---> Public Key Crypto <--- */ +#ifndef LTC_NO_PK + +/* Include RSA support */ +#define LTC_MRSA + +/* Include Katja (a Rabin variant like RSA) */ +/* #define MKAT */ + +/* Digital Signature Algorithm */ +#define LTC_MDSA + +/* ECC */ +#define LTC_MECC + +/* use Shamir's trick for point mul (speeds up signature verification) */ +#define LTC_ECC_SHAMIR + +#if defined(TFM_LTC_DESC) && defined(LTC_MECC) + #define LTC_MECC_ACCEL +#endif + +/* do we want fixed point ECC */ +/* #define LTC_MECC_FP */ + +/* Timing Resistant? */ +/* #define LTC_ECC_TIMING_RESISTANT */ + +#endif /* LTC_NO_PK */ + +/* LTC_PKCS #1 (RSA) and #5 (Password Handling) stuff */ +#ifndef LTC_NO_PKCS + +#define LTC_PKCS_1 +#define LTC_PKCS_5 + +/* Include ASN.1 DER (required by DSA/RSA) */ +#define LTC_DER + +#endif /* LTC_NO_PKCS */ + +/* cleanup */ + +#ifdef LTC_MECC +/* Supported ECC Key Sizes */ +#ifndef LTC_NO_CURVES + #define ECC112 + #define ECC128 + #define ECC160 + #define ECC192 + #define ECC224 + #define ECC256 + #define ECC384 + #define ECC521 +#endif +#endif + +#if defined(LTC_MECC) || defined(LTC_MRSA) || defined(LTC_MDSA) || defined(MKATJA) + /* Include the MPI functionality? (required by the PK algorithms) */ + #define MPI +#endif + +#ifdef LTC_MRSA + #define LTC_PKCS_1 +#endif + +#if defined(LTC_DER) && !defined(MPI) + #error ASN.1 DER requires MPI functionality +#endif + +#if (defined(LTC_MDSA) || defined(LTC_MRSA) || defined(LTC_MECC) || defined(MKATJA)) && !defined(LTC_DER) + #error PK requires ASN.1 DER functionality, make sure LTC_DER is enabled +#endif + +/* THREAD management */ +#ifdef LTC_PTHREAD + +#include + +#define LTC_MUTEX_GLOBAL(x) pthread_mutex_t x = PTHREAD_MUTEX_INITIALIZER; +#define LTC_MUTEX_PROTO(x) extern pthread_mutex_t x; +#define LTC_MUTEX_TYPE(x) pthread_mutex_t x; +#define LTC_MUTEX_INIT(x) pthread_mutex_init(x, NULL); +#define LTC_MUTEX_LOCK(x) pthread_mutex_lock(x); +#define LTC_MUTEX_UNLOCK(x) pthread_mutex_unlock(x); + +#else + +/* default no functions */ +#define LTC_MUTEX_GLOBAL(x) +#define LTC_MUTEX_PROTO(x) +#define LTC_MUTEX_TYPE(x) +#define LTC_MUTEX_INIT(x) +#define LTC_MUTEX_LOCK(x) +#define LTC_MUTEX_UNLOCK(x) + +#endif + +/* Debuggers */ + +/* define this if you use Valgrind, note: it CHANGES the way SOBER-128 and LTC_RC4 work (see the code) */ +/* #define LTC_VALGRIND */ + +#endif + + + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_custom.h,v $ */ +/* $Revision: 1.73 $ */ +/* $Date: 2007/05/12 14:37:41 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_hash.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_hash.h new file mode 100644 index 0000000..e4e84e4 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_hash.h @@ -0,0 +1,14 @@ +/* ---- HASH FUNCTIONS ---- */ + +struct algo_properties_st; + +int hash_is_valid(const struct algo_properties_st *hash); + +int hash_memory(const struct algo_properties_st *hash, + const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int hash_memory_multi(const struct algo_properties_st *hash, unsigned char *out, unsigned long *outlen, + const unsigned char *in, unsigned long inlen, ...); + +int hash_get_oid(const struct algo_properties_st *hash, oid_st* st); + diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_macros.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_macros.h new file mode 100644 index 0000000..53bda9b --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_macros.h @@ -0,0 +1,424 @@ +/* fix for MSVC ...evil! */ +#ifdef _MSC_VER + #define CONST64(n) n ## ui64 + typedef unsigned __int64 ulong64; +#else + #define CONST64(n) n ## ULL + typedef unsigned long long ulong64; +#endif + +/* this is the "32-bit at least" data type + * Re-define it to suit your platform but it must be at least 32-bits + */ +#if defined(__x86_64__) || (defined(__sparc__) && defined(__arch64__)) + typedef unsigned ulong32; +#else + typedef unsigned long ulong32; +#endif + +/* ---- HELPER MACROS ---- */ +#ifdef ENDIAN_NEUTRAL + +#define STORE32L(x, y) \ + { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ + (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } + +#define LOAD32L(x, y) \ + { x = ((unsigned long)((y)[3] & 255)<<24) | \ + ((unsigned long)((y)[2] & 255)<<16) | \ + ((unsigned long)((y)[1] & 255)<<8) | \ + ((unsigned long)((y)[0] & 255)); } + +#define STORE64L(x, y) \ + { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \ + (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \ + (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ + (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } + +#define LOAD64L(x, y) \ + { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \ + (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \ + (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \ + (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); } + +#define STORE32H(x, y) \ + { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \ + (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); } + +#define LOAD32H(x, y) \ + { x = ((unsigned long)((y)[0] & 255)<<24) | \ + ((unsigned long)((y)[1] & 255)<<16) | \ + ((unsigned long)((y)[2] & 255)<<8) | \ + ((unsigned long)((y)[3] & 255)); } + +#define STORE64H(x, y) \ + { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \ + (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \ + (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \ + (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); } + +#define LOAD64H(x, y) \ + { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \ + (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \ + (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \ + (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); } + +#endif /* ENDIAN_NEUTRAL */ + +#ifdef ENDIAN_LITTLE + +#if !defined(LTC_NO_BSWAP) && (defined(INTEL_CC) || (defined(__GNUC__) && (defined(__DJGPP__) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__i386__) || defined(__x86_64__)))) + +#define STORE32H(x, y) \ +asm __volatile__ ( \ + "bswapl %0 \n\t" \ + "movl %0,(%1)\n\t" \ + "bswapl %0 \n\t" \ + ::"r"(x), "r"(y)); + +#define LOAD32H(x, y) \ +asm __volatile__ ( \ + "movl (%1),%0\n\t" \ + "bswapl %0\n\t" \ + :"=r"(x): "r"(y)); + +#else + +#define STORE32H(x, y) \ + { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \ + (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); } + +#define LOAD32H(x, y) \ + { x = ((unsigned long)((y)[0] & 255)<<24) | \ + ((unsigned long)((y)[1] & 255)<<16) | \ + ((unsigned long)((y)[2] & 255)<<8) | \ + ((unsigned long)((y)[3] & 255)); } + +#endif + + +/* x86_64 processor */ +#if !defined(LTC_NO_BSWAP) && (defined(__GNUC__) && defined(__x86_64__)) + +#define STORE64H(x, y) \ +asm __volatile__ ( \ + "bswapq %0 \n\t" \ + "movq %0,(%1)\n\t" \ + "bswapq %0 \n\t" \ + ::"r"(x), "r"(y)); + +#define LOAD64H(x, y) \ +asm __volatile__ ( \ + "movq (%1),%0\n\t" \ + "bswapq %0\n\t" \ + :"=r"(x): "r"(y)); + +#else + +#define STORE64H(x, y) \ + { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \ + (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \ + (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \ + (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); } + +#define LOAD64H(x, y) \ + { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \ + (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \ + (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \ + (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); } + +#endif + +#ifdef ENDIAN_32BITWORD + +#define STORE32L(x, y) \ + { ulong32 __t = (x); XMEMCPY(y, &__t, 4); } + +#define LOAD32L(x, y) \ + XMEMCPY(&(x), y, 4); + +#define STORE64L(x, y) \ + { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \ + (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \ + (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ + (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } + +#define LOAD64L(x, y) \ + { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \ + (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \ + (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \ + (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); } + +#else /* 64-bit words then */ + +#define STORE32L(x, y) \ + { ulong32 __t = (x); XMEMCPY(y, &__t, 4); } + +#define LOAD32L(x, y) \ + { XMEMCPY(&(x), y, 4); x &= 0xFFFFFFFF; } + +#define STORE64L(x, y) \ + { ulong64 __t = (x); XMEMCPY(y, &__t, 8); } + +#define LOAD64L(x, y) \ + { XMEMCPY(&(x), y, 8); } + +#endif /* ENDIAN_64BITWORD */ + +#endif /* ENDIAN_LITTLE */ + +#ifdef ENDIAN_BIG +#define STORE32L(x, y) \ + { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ + (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } + +#define LOAD32L(x, y) \ + { x = ((unsigned long)((y)[3] & 255)<<24) | \ + ((unsigned long)((y)[2] & 255)<<16) | \ + ((unsigned long)((y)[1] & 255)<<8) | \ + ((unsigned long)((y)[0] & 255)); } + +#define STORE64L(x, y) \ + { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \ + (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \ + (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ + (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } + +#define LOAD64L(x, y) \ + { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48) | \ + (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32) | \ + (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16) | \ + (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); } + +#ifdef ENDIAN_32BITWORD + +#define STORE32H(x, y) \ + { ulong32 __t = (x); XMEMCPY(y, &__t, 4); } + +#define LOAD32H(x, y) \ + XMEMCPY(&(x), y, 4); + +#define STORE64H(x, y) \ + { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \ + (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \ + (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \ + (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); } + +#define LOAD64H(x, y) \ + { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48)| \ + (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32)| \ + (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16)| \ + (((ulong64)((y)[6] & 255))<<8)| (((ulong64)((y)[7] & 255))); } + +#else /* 64-bit words then */ + +#define STORE32H(x, y) \ + { ulong32 __t = (x); XMEMCPY(y, &__t, 4); } + +#define LOAD32H(x, y) \ + { XMEMCPY(&(x), y, 4); x &= 0xFFFFFFFF; } + +#define STORE64H(x, y) \ + { ulong64 __t = (x); XMEMCPY(y, &__t, 8); } + +#define LOAD64H(x, y) \ + { XMEMCPY(&(x), y, 8); } + +#endif /* ENDIAN_64BITWORD */ +#endif /* ENDIAN_BIG */ + +#define BSWAP(x) ( ((x>>24)&0x000000FFUL) | ((x<<24)&0xFF000000UL) | \ + ((x>>8)&0x0000FF00UL) | ((x<<8)&0x00FF0000UL) ) + + +/* 32-bit Rotates */ +#if defined(_MSC_VER) + +/* instrinsic rotate */ +#include +#pragma intrinsic(_lrotr,_lrotl) +#define ROR(x,n) _lrotr(x,n) +#define ROL(x,n) _lrotl(x,n) +#define RORc(x,n) _lrotr(x,n) +#define ROLc(x,n) _lrotl(x,n) + +#elif !defined(__STRICT_ANSI__) && defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && !defined(INTEL_CC) && !defined(LTC_NO_ASM) + +static inline unsigned ROL(unsigned word, int i) +{ + asm ("roll %%cl,%0" + :"=r" (word) + :"0" (word),"c" (i)); + return word; +} + +static inline unsigned ROR(unsigned word, int i) +{ + asm ("rorl %%cl,%0" + :"=r" (word) + :"0" (word),"c" (i)); + return word; +} + +#ifndef LTC_NO_ROLC + +static inline unsigned ROLc(unsigned word, const int i) +{ + asm ("roll %2,%0" + :"=r" (word) + :"0" (word),"I" (i)); + return word; +} + +static inline unsigned RORc(unsigned word, const int i) +{ + asm ("rorl %2,%0" + :"=r" (word) + :"0" (word),"I" (i)); + return word; +} + +#else + +#define ROLc ROL +#define RORc ROR + +#endif + +#elif !defined(__STRICT_ANSI__) && defined(LTC_PPC32) + +static inline unsigned ROL(unsigned word, int i) +{ + asm ("rotlw %0,%0,%2" + :"=r" (word) + :"0" (word),"r" (i)); + return word; +} + +static inline unsigned ROR(unsigned word, int i) +{ + asm ("rotlw %0,%0,%2" + :"=r" (word) + :"0" (word),"r" (32-i)); + return word; +} + +#ifndef LTC_NO_ROLC + +static inline unsigned ROLc(unsigned word, const int i) +{ + asm ("rotlwi %0,%0,%2" + :"=r" (word) + :"0" (word),"I" (i)); + return word; +} + +static inline unsigned RORc(unsigned word, const int i) +{ + asm ("rotrwi %0,%0,%2" + :"=r" (word) + :"0" (word),"I" (i)); + return word; +} + +#else + +#define ROLc ROL +#define RORc ROR + +#endif + + +#else + +/* rotates the hard way */ +#define ROL(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) +#define ROR(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) +#define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) +#define RORc(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) + +#endif + + +/* 64-bit Rotates */ +#if !defined(__STRICT_ANSI__) && defined(__GNUC__) && defined(__x86_64__) && !defined(LTC_NO_ASM) + +static inline unsigned long ROL64(unsigned long word, int i) +{ + asm("rolq %%cl,%0" + :"=r" (word) + :"0" (word),"c" (i)); + return word; +} + +static inline unsigned long ROR64(unsigned long word, int i) +{ + asm("rorq %%cl,%0" + :"=r" (word) + :"0" (word),"c" (i)); + return word; +} + +#ifndef LTC_NO_ROLC + +static inline unsigned long ROL64c(unsigned long word, const int i) +{ + asm("rolq %2,%0" + :"=r" (word) + :"0" (word),"J" (i)); + return word; +} + +static inline unsigned long ROR64c(unsigned long word, const int i) +{ + asm("rorq %2,%0" + :"=r" (word) + :"0" (word),"J" (i)); + return word; +} + +#else /* LTC_NO_ROLC */ + +#define ROL64c ROL64 +#define ROR64c ROR64 + +#endif + +#else /* Not x86_64 */ + +#define ROL64(x, y) \ + ( (((x)<<((ulong64)(y)&63)) | \ + (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)64-((y)&63)))) & CONST64(0xFFFFFFFFFFFFFFFF)) + +#define ROR64(x, y) \ + ( ((((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)(y)&CONST64(63))) | \ + ((x)<<((ulong64)(64-((y)&CONST64(63)))))) & CONST64(0xFFFFFFFFFFFFFFFF)) + +#define ROL64c(x, y) \ + ( (((x)<<((ulong64)(y)&63)) | \ + (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)64-((y)&63)))) & CONST64(0xFFFFFFFFFFFFFFFF)) + +#define ROR64c(x, y) \ + ( ((((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)(y)&CONST64(63))) | \ + ((x)<<((ulong64)(64-((y)&CONST64(63)))))) & CONST64(0xFFFFFFFFFFFFFFFF)) + +#endif + +#ifndef MAX + #define MAX(x, y) ( ((x)>(y))?(x):(y) ) +#endif + +#ifndef MIN + #define MIN(x, y) ( ((x)<(y))?(x):(y) ) +#endif + +/* extract a byte portably */ +#ifdef _MSC_VER + #define byte(x, n) ((unsigned char)((x) >> (8 * (n)))) +#else + #define byte(x, n) (((x) >> (8 * (n))) & 255) +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_macros.h,v $ */ +/* $Revision: 1.15 $ */ +/* $Date: 2006/11/29 23:43:57 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_math.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_math.h new file mode 100644 index 0000000..6c0e6c5 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_math.h @@ -0,0 +1,13 @@ +/** math functions **/ + +#define LTC_MP_LT -1 +#define LTC_MP_EQ 0 +#define LTC_MP_GT 1 + +#define LTC_MP_NO 0 +#define LTC_MP_YES 1 + +#include + +typedef mp_int* mp_int_t; + diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_misc.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_misc.h new file mode 100644 index 0000000..f5384ca --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_misc.h @@ -0,0 +1,23 @@ +/* ---- LTC_BASE64 Routines ---- */ +#ifdef LTC_BASE64 +int base64_encode(const unsigned char *in, unsigned long len, + unsigned char *out, unsigned long *outlen); + +int base64_decode(const unsigned char *in, unsigned long len, + unsigned char *out, unsigned long *outlen); +#endif + +/* ---- MEM routines ---- */ +void zeromem(void *dst, size_t len); +void burn_stack(unsigned long len); + +const char *error_to_string(int err); + +extern const char *crypt_build_settings; + +/* ---- HMM ---- */ +int crypt_fsa(void *mp, ...); + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_misc.h,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_pk.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_pk.h new file mode 100644 index 0000000..145165e --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_pk.h @@ -0,0 +1,359 @@ +/* ---- NUMBER THEORY ---- */ + +struct algo_properties_st; + +enum { + PK_PUBLIC=0, + PK_PRIVATE=1 +}; + +enum { + PKA_RSA, + PKA_DSA +}; + +typedef struct Oid { + unsigned long OID[16]; + /** Length of DER encoding */ + unsigned long OIDlen; +} oid_st; + +int pk_get_oid(int pk, oid_st *st); +int rand_prime(mp_int *N, long len); + +/* ---- RSA ---- */ +#ifdef LTC_MRSA + +/* Min and Max RSA key sizes (in bits) */ +#define MIN_RSA_SIZE 1024 +#define MAX_RSA_SIZE 4096 + +/** RSA LTC_PKCS style key */ +typedef struct Rsa_key { + /** Type of key, PK_PRIVATE or PK_PUBLIC */ + int type; + /** The public exponent */ + mp_int e; + /** The private exponent */ + mp_int d; + /** The modulus */ + mp_int N; + /** The p factor of N */ + mp_int p; + /** The q factor of N */ + mp_int q; + /** The 1/q mod p CRT param */ + mp_int qP; + /** The d mod (p - 1) CRT param */ + mp_int dP; + /** The d mod (q - 1) CRT param */ + mp_int dQ; +} rsa_key; + +int rsa_make_key(int size, long e, rsa_key *key); + +int rsa_exptmod(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int which, + rsa_key *key); + +void rsa_free(rsa_key *key); + +/* These use LTC_PKCS #1 v2.0 padding */ +#define rsa_encrypt_key(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash, _key) \ + rsa_encrypt_key_ex(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash, LTC_LTC_PKCS_1_OAEP, _key) + +#define rsa_decrypt_key(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash, _stat, _key) \ + rsa_decrypt_key_ex(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash, LTC_LTC_PKCS_1_OAEP, _stat, _key) + +#define rsa_sign_hash(_in, _inlen, _out, _outlen, _hash, _saltlen, _key) \ + rsa_sign_hash_ex(_in, _inlen, _out, _outlen, LTC_LTC_PKCS_1_PSS, _hash, _saltlen, _key) + +#define rsa_verify_hash(_sig, _siglen, _hash, _hashlen, _hash_algo, _saltlen, _stat, _key) \ + rsa_verify_hash_ex(_sig, _siglen, _hash, _hashlen, LTC_LTC_PKCS_1_PSS, _hash_algo, _saltlen, _stat, _key) + +/* These can be switched between LTC_PKCS #1 v2.x and LTC_PKCS #1 v1.5 paddings */ +int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + const struct algo_properties_st *hash, int padding, rsa_key *key); + +int rsa_decrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + const struct algo_properties_st *hash, int padding, + int *stat, rsa_key *key); + +int rsa_sign_hash_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + int padding, + const struct algo_properties_st *hash, unsigned long saltlen, + rsa_key *key); + +int rsa_verify_hash_ex(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int padding, + const struct algo_properties_st *hash_algo, unsigned long saltlen, + int *stat, rsa_key *key); + +/* LTC_PKCS #1 import/export */ +int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key); +int rsa_import(const unsigned char *in, unsigned long inlen, rsa_key *key); + +#endif + + +#ifdef LTC_MDSA + +/* Max diff between group and modulus size in bytes */ +#define LTC_MDSA_DELTA 512 + +/* Max DSA group size in bytes (default allows 4k-bit groups) */ +#define LTC_MDSA_MAX_GROUP 512 + +/** DSA key structure */ +typedef struct { + /** The key type, PK_PRIVATE or PK_PUBLIC */ + int type; + + /** The order of the sub-group used in octets */ + int qord; + + /** The generator */ + mp_int g; + + /** The prime used to generate the sub-group */ + mp_int q; + + /** The large prime that generats the field the contains the sub-group */ + mp_int p; + + /** The private key */ + mp_int x; + + /** The public key */ + mp_int y; +} dsa_key; + +int dsa_make_key(int group_size, int modulus_size, dsa_key *key); +void dsa_free(dsa_key *key); + +int dsa_sign_hash_raw(const unsigned char *in, unsigned long inlen, + mp_int_t r, mp_int_t s, + dsa_key *key); + +int dsa_sign_hash(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + dsa_key *key); + +int dsa_verify_hash_raw( mp_int_t r, mp_int_t s, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key); + +int dsa_verify_hash(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key); + +int dsa_encrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + int hash, dsa_key *key); + +int dsa_decrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + dsa_key *key); + +int dsa_import(const unsigned char *in, unsigned long inlen, dsa_key *key); +int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key); +int dsa_verify_key(dsa_key *key, int *stat); + +int dsa_shared_secret(void *private_key, mp_int_t base, + dsa_key *public_key, + unsigned char *out, unsigned long *outlen); +#endif + +#ifdef LTC_DER +/* DER handling */ + +enum { + LTC_ASN1_EOL, + LTC_ASN1_BOOLEAN, + LTC_ASN1_INTEGER, + LTC_ASN1_SHORT_INTEGER, + LTC_ASN1_BIT_STRING, + LTC_ASN1_OCTET_STRING, + LTC_ASN1_NULL, + LTC_ASN1_OBJECT_IDENTIFIER, + LTC_ASN1_IA5_STRING, + LTC_ASN1_PRINTABLE_STRING, + LTC_ASN1_UTF8_STRING, + LTC_ASN1_UTCTIME, + LTC_ASN1_CHOICE, + LTC_ASN1_SEQUENCE, + LTC_ASN1_SET, + LTC_ASN1_SETOF +}; + +/** A LTC ASN.1 list type */ +typedef struct ltc_asn1_list_ { + /** The LTC ASN.1 enumerated type identifier */ + int type; + /** The data to encode or place for decoding */ + void *data; + /** The size of the input or resulting output */ + unsigned long size; + /** The used flag, this is used by the CHOICE ASN.1 type to indicate which choice was made */ + int used; + /** prev/next entry in the list */ + struct ltc_asn1_list_ *prev, *next, *child, *parent; +} ltc_asn1_list; + +#define LTC_SET_ASN1(list, index, Type, Data, Size) \ + do { \ + int LTC_MACRO_temp = (index); \ + ltc_asn1_list *LTC_MACRO_list = (list); \ + LTC_MACRO_list[LTC_MACRO_temp].type = (Type); \ + LTC_MACRO_list[LTC_MACRO_temp].data = (void*)(Data); \ + LTC_MACRO_list[LTC_MACRO_temp].size = (Size); \ + LTC_MACRO_list[LTC_MACRO_temp].used = 0; \ + } while (0); + +/* SEQUENCE */ +int der_encode_sequence_ex(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int type_of); + +#define der_encode_sequence(list, inlen, out, outlen) der_encode_sequence_ex(list, inlen, out, outlen, LTC_ASN1_SEQUENCE) + +int der_decode_sequence_ex(const unsigned char *in, unsigned long inlen, + ltc_asn1_list *list, unsigned long outlen, int ordered); + +#define der_decode_sequence(in, inlen, list, outlen) der_decode_sequence_ex(in, inlen, list, outlen, 1) + +int der_length_sequence(ltc_asn1_list *list, unsigned long inlen, + unsigned long *outlen); + +/* SUBJECT PUBLIC KEY INFO */ +int der_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen, + unsigned int algorithm, void* public_key, unsigned long public_key_len, + unsigned long parameters_type, void* parameters, unsigned long parameters_len); + +int der_decode_subject_public_key_info(const unsigned char *in, unsigned long inlen, + unsigned int algorithm, void* public_key, unsigned long* public_key_len, + unsigned long parameters_type, ltc_asn1_list* parameters, unsigned long parameters_len); + +/* SET */ +#define der_decode_set(in, inlen, list, outlen) der_decode_sequence_ex(in, inlen, list, outlen, 0) +#define der_length_set der_length_sequence +int der_encode_set(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen); + +int der_encode_setof(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen); + +/* VA list handy helpers with triplets of */ +int der_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...); +int der_decode_sequence_multi(const unsigned char *in, unsigned long inlen, ...); + +/* FLEXI DECODER handle unknown list decoder */ +int der_decode_sequence_flexi(const unsigned char *in, unsigned long *inlen, ltc_asn1_list **out); +void der_free_sequence_flexi(ltc_asn1_list *list); +void der_sequence_free(ltc_asn1_list *in); + +/* BOOLEAN */ +int der_length_boolean(unsigned long *outlen); +int der_encode_boolean(int in, + unsigned char *out, unsigned long *outlen); +int der_decode_boolean(const unsigned char *in, unsigned long inlen, + int *out); +/* INTEGER */ +int der_encode_integer(mp_int_t num, unsigned char *out, unsigned long *outlen); +int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int_t num); +int der_length_integer(mp_int_t num, unsigned long *len); + +/* INTEGER -- handy for 0..2^32-1 values */ +int der_decode_short_integer(const unsigned char *in, unsigned long inlen, unsigned long *num); +int der_encode_short_integer(unsigned long num, unsigned char *out, unsigned long *outlen); +int der_length_short_integer(unsigned long num, unsigned long *outlen); + +/* BIT STRING */ +int der_encode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_decode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_length_bit_string(unsigned long nbits, unsigned long *outlen); + +/* OCTET STRING */ +int der_encode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_decode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_length_octet_string(unsigned long noctets, unsigned long *outlen); + +/* OBJECT IDENTIFIER */ +int der_encode_object_identifier(unsigned long *words, unsigned long nwords, + unsigned char *out, unsigned long *outlen); +int der_decode_object_identifier(const unsigned char *in, unsigned long inlen, + unsigned long *words, unsigned long *outlen); +int der_length_object_identifier(unsigned long *words, unsigned long nwords, unsigned long *outlen); +unsigned long der_object_identifier_bits(unsigned long x); + +/* IA5 STRING */ +int der_encode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_decode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_length_ia5_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen); + +int der_ia5_char_encode(int c); +int der_ia5_value_decode(int v); + +/* Printable STRING */ +int der_encode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_decode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); +int der_length_printable_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen); + +int der_printable_char_encode(int c); +int der_printable_value_decode(int v); + +/* UTF-8 */ + +int der_encode_utf8_string(const wchar_t *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen); + +int der_decode_utf8_string(const unsigned char *in, unsigned long inlen, + wchar_t *out, unsigned long *outlen); +unsigned long der_utf8_charsize(const wchar_t c); +int der_length_utf8_string(const wchar_t *in, unsigned long noctets, unsigned long *outlen); + + +/* CHOICE */ +int der_decode_choice(const unsigned char *in, unsigned long *inlen, + ltc_asn1_list *list, unsigned long outlen); + +/* UTCTime */ +typedef struct { + unsigned YY, /* year */ + MM, /* month */ + DD, /* day */ + hh, /* hour */ + mm, /* minute */ + ss, /* second */ + off_dir, /* timezone offset direction 0 == +, 1 == - */ + off_hh, /* timezone offset hours */ + off_mm; /* timezone offset minutes */ +} ltc_utctime; + +int der_encode_utctime(ltc_utctime *utctime, + unsigned char *out, unsigned long *outlen); + +int der_decode_utctime(const unsigned char *in, unsigned long *inlen, + ltc_utctime *out); + +int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen); + + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_pk.h,v $ */ +/* $Revision: 1.81 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_pkcs.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_pkcs.h new file mode 100644 index 0000000..be0d7f6 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_pkcs.h @@ -0,0 +1,67 @@ +/* LTC_PKCS Header Info */ + +/* ===> LTC_PKCS #1 -- RSA Cryptography <=== */ +#ifdef LTC_PKCS_1 + +struct algo_properties_st; + +enum ltc_pkcs_1_v1_5_blocks +{ + LTC_LTC_PKCS_1_EMSA = 1, /* Block type 1 (LTC_PKCS #1 v1.5 signature padding) */ + LTC_LTC_PKCS_1_EME = 2 /* Block type 2 (LTC_PKCS #1 v1.5 encryption padding) */ +}; + +enum ltc_pkcs_1_paddings +{ + LTC_LTC_PKCS_1_V1_5 = 1, /* LTC_PKCS #1 v1.5 padding (\sa ltc_pkcs_1_v1_5_blocks) */ + LTC_LTC_PKCS_1_OAEP = 2, /* LTC_PKCS #1 v2.0 encryption padding */ + LTC_LTC_PKCS_1_PSS = 3 /* LTC_PKCS #1 v2.1 signature padding */ +}; + +int pkcs_1_mgf1(const struct algo_properties_st *hash, + const unsigned char *seed, unsigned long seedlen, + unsigned char *mask, unsigned long masklen); + +int pkcs_1_i2osp(void *n, unsigned long modulus_len, unsigned char *out); +int pkcs_1_os2ip(void *n, unsigned char *in, unsigned long inlen); + +/* *** v1.5 padding */ +int pkcs_1_v1_5_encode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + unsigned char *out, + unsigned long *outlen); + +int pkcs_1_v1_5_decode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + unsigned char *out, + unsigned long *outlen, + int *is_valid); + +/* *** v2.1 padding */ +int pkcs_1_oaep_encode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, const struct algo_properties_st *hash, + unsigned char *out, unsigned long *outlen); + +int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, const struct algo_properties_st *hash, + unsigned char *out, unsigned long *outlen, + int *res); + +int pkcs_1_pss_encode(const unsigned char *msghash, unsigned long msghashlen, + unsigned long saltlen, const struct algo_properties_st *hash, + unsigned long modulus_bitlen, + unsigned char *out, unsigned long *outlen); + +int pkcs_1_pss_decode(const unsigned char *msghash, unsigned long msghashlen, + const unsigned char *sig, unsigned long siglen, + unsigned long saltlen, const struct algo_properties_st *hash, + unsigned long modulus_bitlen, int *res); + +#endif /* LTC_PKCS_1 */ + diff --git a/crypto/userspace/libtomcrypt/headers/tomcrypt_prng.h b/crypto/userspace/libtomcrypt/headers/tomcrypt_prng.h new file mode 100644 index 0000000..26bf711 --- /dev/null +++ b/crypto/userspace/libtomcrypt/headers/tomcrypt_prng.h @@ -0,0 +1,80 @@ +/* ---- PRNG Stuff ---- */ + +typedef union Prng_state { + char dummy[1]; +} prng_state; + +/** PRNG descriptor */ +extern struct ltc_prng_descriptor { + /** Name of the PRNG */ + char *name; + /** size in bytes of exported state */ + int export_size; + /** Start a PRNG state + @param prng [out] The state to initialize + @return CRYPT_OK if successful + */ + int (*start)(prng_state *prng); + /** Add entropy to the PRNG + @param in The entropy + @param inlen Length of the entropy (octets)\ + @param prng The PRNG state + @return CRYPT_OK if successful + */ + int (*add_entropy)(const unsigned char *in, unsigned long inlen, prng_state *prng); + /** Ready a PRNG state to read from + @param prng The PRNG state to ready + @return CRYPT_OK if successful + */ + int (*ready)(prng_state *prng); + /** Read from the PRNG + @param out [out] Where to store the data + @param outlen Length of data desired (octets) + @param prng The PRNG state to read from + @return Number of octets read + */ + unsigned long (*read)(unsigned char *out, unsigned long outlen, prng_state *prng); + /** Terminate a PRNG state + @param prng The PRNG state to terminate + @return CRYPT_OK if successful + */ + int (*done)(prng_state *prng); + /** Export a PRNG state + @param out [out] The destination for the state + @param outlen [in/out] The max size and resulting size of the PRNG state + @param prng The PRNG to export + @return CRYPT_OK if successful + */ + int (*pexport)(unsigned char *out, unsigned long *outlen, prng_state *prng); + /** Import a PRNG state + @param in The data to import + @param inlen The length of the data to import (octets) + @param prng The PRNG to initialize/import + @return CRYPT_OK if successful + */ + int (*pimport)(const unsigned char *in, unsigned long inlen, prng_state *prng); + /** Self-test the PRNG + @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled + */ + int (*test)(void); +} prng_descriptor[]; + +int linux_start(prng_state *prng); +int linux_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); +int linux_ready(prng_state *prng); +unsigned long linux_read(unsigned char *out, unsigned long outlen, prng_state *prng); +int linux_done(prng_state *prng); +int linux_export(unsigned char *out, unsigned long *outlen, prng_state *prng); +int linux_import(const unsigned char *in, unsigned long inlen, prng_state *prng); +int linux_test(void); + +extern const struct ltc_prng_descriptor linux_desc; + +int find_prng(const char *name); +int register_prng(const struct ltc_prng_descriptor *prng); +int unregister_prng(const struct ltc_prng_descriptor *prng); +int prng_is_valid(int idx); + +/* $Source: /cvs/libtom/libtomcrypt/src/headers/tomcrypt_prng.h,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/math/rand_prime.c b/crypto/userspace/libtomcrypt/math/rand_prime.c new file mode 100644 index 0000000..ab73cd0 --- /dev/null +++ b/crypto/userspace/libtomcrypt/math/rand_prime.c @@ -0,0 +1,80 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file rand_prime.c + Generate a random prime, Tom St Denis +*/ + +#define USE_BBS 1 + +int rand_prime(mp_int *N, long len) +{ + int err, res, type; + unsigned char *buf; + + LTC_ARGCHK(N != NULL); + + /* get type */ + if (len < 0) { + type = USE_BBS; + len = -len; + } else { + type = 0; + } + + /* allow sizes between 2 and 512 bytes for a prime size */ + if (len < 2 || len > 512) { + return CRYPT_INVALID_PRIME_SIZE; + } + + /* allocate buffer to work with */ + buf = XCALLOC(1, len); + if (buf == NULL) { + return CRYPT_MEM; + } + + do { + /* generate value */ + get_random_bytes( buf, len); + + /* munge bits */ + buf[0] |= 0x80 | 0x40; + buf[len-1] |= 0x01 | ((type & USE_BBS) ? 0x02 : 0x00); + + /* load value */ + if ((err = mp_read_unsigned_bin(N, buf, len)) != CRYPT_OK) { + XFREE(buf); + return err; + } + + /* test */ + if ((err = mp_prime_is_prime(N, 8, &res)) != CRYPT_OK) { + XFREE(buf); + return err; + } + } while (res == LTC_MP_NO); + +#ifdef LTC_CLEAN_STACK + zeromem(buf, len); +#endif + + XFREE(buf); + return CRYPT_OK; +} + + + +/* $Source: /cvs/libtom/libtomcrypt/src/math/rand_prime.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:23 $ */ diff --git a/crypto/userspace/libtomcrypt/misc/crypt/crypt_argchk.c b/crypto/userspace/libtomcrypt/misc/crypt/crypt_argchk.c new file mode 100644 index 0000000..143b784 --- /dev/null +++ b/crypto/userspace/libtomcrypt/misc/crypt/crypt_argchk.c @@ -0,0 +1,28 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_argchk.c + Perform argument checking, Tom St Denis +*/ + +#if (ARGTYPE == 0) +void crypt_argchk(char *v, char *s, int d) +{ + printk("LTC_ARGCHK '%s' failure on line %d of file %s\n", + v, d, s); +} +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_argchk.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/misc/pk_get_oid.c b/crypto/userspace/libtomcrypt/misc/pk_get_oid.c new file mode 100644 index 0000000..197d7ae --- /dev/null +++ b/crypto/userspace/libtomcrypt/misc/pk_get_oid.c @@ -0,0 +1,40 @@ +/* LibTomCrypt, modular cryptographic library + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + */ +#include "tomcrypt.h" + +static const oid_st rsa_oid = { + .OIDlen = 7, + .OID = { 1, 2, 840, 113549, 1, 1, 1 }, +}; + +static const oid_st dsa_oid = { + .OIDlen = 6, + .OID = { 1, 2, 840, 10040, 4, 1 }, +}; + +/* + Returns the OID of the public key algorithm. + @return CRYPT_OK if valid +*/ +int pk_get_oid(int pk, oid_st *st) +{ + switch (pk) { + case PKA_RSA: + memcpy(st, &rsa_oid, sizeof(*st)); + break; + case PKA_DSA: + memcpy(st, &dsa_oid, sizeof(*st)); + break; + default: + return CRYPT_INVALID_ARG; + } + return CRYPT_OK; +} + diff --git a/crypto/userspace/libtomcrypt/misc/qsort.c b/crypto/userspace/libtomcrypt/misc/qsort.c new file mode 100644 index 0000000..72f5108 --- /dev/null +++ b/crypto/userspace/libtomcrypt/misc/qsort.c @@ -0,0 +1,247 @@ +/* Copyright (C) 1991,1992,1996,1997,1999,2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Written by Douglas C. Schmidt (schmidt@ics.uci.edu). + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* If you consider tuning this algorithm, you should consult first: + Engineering a sort function; Jon Bentley and M. Douglas McIlroy; + Software - Practice and Experience; Vol. 23 (11), 1249-1265, 1993. */ + +#include + +/* Byte-wise swap two items of size SIZE. */ +#define SWAP(a, b, size) \ + do \ + { \ + register size_t __size = (size); \ + register char *__a = (a), *__b = (b); \ + do \ + { \ + char __tmp = *__a; \ + *__a++ = *__b; \ + *__b++ = __tmp; \ + } while (--__size > 0); \ + } while (0) + +/* Discontinue quicksort algorithm when partition gets below this size. + This particular magic number was chosen to work best on a Sun 4/260. */ +#define MAX_THRESH 4 + +/* Stack node declarations used to store unfulfilled partition obligations. */ +typedef struct + { + char *lo; + char *hi; + } stack_node; + +/* The next 4 #defines implement a very fast in-line stack abstraction. */ +/* The stack needs log (total_elements) entries (we could even subtract + log(MAX_THRESH)). Since total_elements has type size_t, we get as + upper bound for log (total_elements): + bits per byte (CHAR_BIT) * sizeof(size_t). */ +#define STACK_SIZE (CHAR_BIT * sizeof(size_t)) +#define PUSH(low, high) ((void) ((top->lo = (low)), (top->hi = (high)), ++top)) +#define POP(low, high) ((void) (--top, (low = top->lo), (high = top->hi))) +#define STACK_NOT_EMPTY (stack < top) + + +/* Order size using quicksort. This implementation incorporates + four optimizations discussed in Sedgewick: + + 1. Non-recursive, using an explicit stack of pointer that store the + next array partition to sort. To save time, this maximum amount + of space required to store an array of SIZE_MAX is allocated on the + stack. Assuming a 32-bit (64 bit) integer for size_t, this needs + only 32 * sizeof(stack_node) == 256 bytes (for 64 bit: 1024 bytes). + Pretty cheap, actually. + + 2. Chose the pivot element using a median-of-three decision tree. + This reduces the probability of selecting a bad pivot value and + eliminates certain extraneous comparisons. + + 3. Only quicksorts TOTAL_ELEMS / MAX_THRESH partitions, leaving + insertion sort to order the MAX_THRESH items within each partition. + This is a big win, since insertion sort is faster for small, mostly + sorted array segments. + + 4. The larger of the two sub-partitions is always pushed onto the + stack first, with the algorithm then concentrating on the + smaller partition. This *guarantees* no more than log (total_elems) + stack size is needed (actually O(1) in this case)! */ + +typedef int(*__compar_fn_t)(const void *, const void *); + +void +qsort (void *const pbase, size_t total_elems, size_t size, + __compar_fn_t cmp) +{ + register char *base_ptr = (char *) pbase; + + const size_t max_thresh = MAX_THRESH * size; + + if (total_elems == 0) + /* Avoid lossage with unsigned arithmetic below. */ + return; + + if (total_elems > MAX_THRESH) + { + char *lo = base_ptr; + char *hi = &lo[size * (total_elems - 1)]; + stack_node stack[STACK_SIZE]; + stack_node *top = stack; + + PUSH (NULL, NULL); + + while (STACK_NOT_EMPTY) + { + char *left_ptr; + char *right_ptr; + + /* Select median value from among LO, MID, and HI. Rearrange + LO and HI so the three values are sorted. This lowers the + probability of picking a pathological pivot value and + skips a comparison for both the LEFT_PTR and RIGHT_PTR in + the while loops. */ + + char *mid = lo + size * ((hi - lo) / size >> 1); + + if ((*cmp) ((void *) mid, (void *) lo) < 0) + SWAP (mid, lo, size); + if ((*cmp) ((void *) hi, (void *) mid) < 0) + SWAP (mid, hi, size); + else + goto jump_over; + if ((*cmp) ((void *) mid, (void *) lo) < 0) + SWAP (mid, lo, size); + jump_over:; + + left_ptr = lo + size; + right_ptr = hi - size; + + /* Here's the famous ``collapse the walls'' section of quicksort. + Gotta like those tight inner loops! They are the main reason + that this algorithm runs much faster than others. */ + do + { + while ((*cmp) ((void *) left_ptr, (void *) mid) < 0) + left_ptr += size; + + while ((*cmp) ((void *) mid, (void *) right_ptr) < 0) + right_ptr -= size; + + if (left_ptr < right_ptr) + { + SWAP (left_ptr, right_ptr, size); + if (mid == left_ptr) + mid = right_ptr; + else if (mid == right_ptr) + mid = left_ptr; + left_ptr += size; + right_ptr -= size; + } + else if (left_ptr == right_ptr) + { + left_ptr += size; + right_ptr -= size; + break; + } + } + while (left_ptr <= right_ptr); + + /* Set up pointers for next iteration. First determine whether + left and right partitions are below the threshold size. If so, + ignore one or both. Otherwise, push the larger partition's + bounds on the stack and continue sorting the smaller one. */ + + if ((size_t) (right_ptr - lo) <= max_thresh) + { + if ((size_t) (hi - left_ptr) <= max_thresh) + /* Ignore both small partitions. */ + POP (lo, hi); + else + /* Ignore small left partition. */ + lo = left_ptr; + } + else if ((size_t) (hi - left_ptr) <= max_thresh) + /* Ignore small right partition. */ + hi = right_ptr; + else if ((right_ptr - lo) > (hi - left_ptr)) + { + /* Push larger left partition indices. */ + PUSH (lo, right_ptr); + lo = left_ptr; + } + else + { + /* Push larger right partition indices. */ + PUSH (left_ptr, hi); + hi = right_ptr; + } + } + } + + /* Once the BASE_PTR array is partially sorted by quicksort the rest + is completely sorted using insertion sort, since this is efficient + for partitions below MAX_THRESH size. BASE_PTR points to the beginning + of the array to sort, and END_PTR points at the very last element in + the array (*not* one beyond it!). */ + + { + char *const end_ptr = &base_ptr[size * (total_elems - 1)]; + char *tmp_ptr = base_ptr; + char *thresh = min(end_ptr, base_ptr + max_thresh); + register char *run_ptr; + + /* Find smallest element in first threshold and place it at the + array's beginning. This is the smallest array element, + and the operation speeds up insertion sort's inner loop. */ + + for (run_ptr = tmp_ptr + size; run_ptr <= thresh; run_ptr += size) + if ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0) + tmp_ptr = run_ptr; + + if (tmp_ptr != base_ptr) + SWAP (tmp_ptr, base_ptr, size); + + /* Insertion sort, running from left-hand-side up to right-hand-side. */ + + run_ptr = base_ptr + size; + while ((run_ptr += size) <= end_ptr) + { + tmp_ptr = run_ptr - size; + while ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0) + tmp_ptr -= size; + + tmp_ptr += size; + if (tmp_ptr != run_ptr) + { + char *trav; + + trav = run_ptr + size; + while (--trav >= run_ptr) + { + char c = *trav; + char *hi, *lo; + + for (hi = lo = trav; (lo -= size) >= tmp_ptr; hi = lo) + *hi = *lo; + *hi = c; + } + } + } + } +} diff --git a/crypto/userspace/libtomcrypt/misc/zeromem.c b/crypto/userspace/libtomcrypt/misc/zeromem.c new file mode 100644 index 0000000..a4bb124 --- /dev/null +++ b/crypto/userspace/libtomcrypt/misc/zeromem.c @@ -0,0 +1,34 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file zeromem.c + Zero a block of memory, Tom St Denis +*/ + +/** + Zero a block of memory + @param out The destination of the area to zero + @param outlen The length of the area to zero (octets) +*/ +void zeromem(void *out, size_t outlen) +{ + unsigned char *mem = out; + LTC_ARGCHKVD(out != NULL); + while (outlen-- > 0) { + *mem++ = 0; + } +} + +/* $Source: /cvs/libtom/libtomcrypt/src/misc/zeromem.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_decode_bit_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_decode_bit_string.c new file mode 100644 index 0000000..c9f6368 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_decode_bit_string.c @@ -0,0 +1,106 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +#define setbit(v, n) (v=((unsigned char)(v) | (1U << (unsigned char)(n)))) + +/** + Store a BIT STRING + @param in The DER encoded BIT STRING + @param inlen The size of the DER BIT STRING + @param out [out] The array of bits stored (8 per char) + @param outlen [in/out] The number of bits stored + @return CRYPT_OK if successful +*/ +int der_decode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long dlen, blen, x, y; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* packet must be at least 4 bytes */ + if (inlen < 4) { + return CRYPT_INVALID_ARG; + } + + /* check for 0x03 */ + if ((in[0]&0x1F) != 0x03) { + return CRYPT_INVALID_PACKET; + } + + /* offset in the data */ + x = 1; + + /* get the length of the data */ + if (in[x] & 0x80) { + /* long format get number of length bytes */ + y = in[x++] & 0x7F; + + /* invalid if 0 or > 2 */ + if (y == 0 || y > 2) { + return CRYPT_INVALID_PACKET; + } + + /* read the data len */ + dlen = 0; + while (y--) { + dlen = (dlen << 8) | (unsigned long)in[x++]; + } + } else { + /* short format */ + dlen = in[x++] & 0x7F; + } + + /* is the data len too long or too short? */ + if ((dlen == 0) || (dlen + x > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* get padding count */ + blen = ((dlen - 1) << 3) - (in[x++] & 7); + + /* too many bits? */ + if (blen > *outlen) { + *outlen = blen; + return CRYPT_BUFFER_OVERFLOW; + } + + /* decode/store the bits */ + for (y = 0; y < blen; y++) { + if (in[x] & (1 << (7 - (y & 7)))) { + setbit(out[y/8], 7-(y%8)); + } + if ((y & 7) == 7) { + ++x; + } + } + + /* we done */ + *outlen = blen; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_decode_bit_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_encode_bit_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_encode_bit_string.c new file mode 100644 index 0000000..d1b6064 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_encode_bit_string.c @@ -0,0 +1,92 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +#define getbit(n, k) (((n) & ( 1 << (k) )) >> (k)) + +/** + Store a BIT STRING + @param in The array of bits to store (8 per char) + @param inlen The number of bits tostore + @param out [out] The destination for the DER encoded BIT STRING + @param outlen [in/out] The max size and resulting size of the DER BIT STRING + @return CRYPT_OK if successful +*/ +int der_encode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long len, x, y; + unsigned char buf; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* avoid overflows */ + if ((err = der_length_bit_string(inlen, &len)) != CRYPT_OK) { + return err; + } + + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* store header (include bit padding count in length) */ + x = 0; + y = (inlen >> 3) + ((inlen&7) ? 1 : 0) + 1; + + out[x++] = 0x03; + if (y < 128) { + out[x++] = (unsigned char)y; + } else if (y < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)y; + } else if (y < 65536) { + out[x++] = 0x82; + out[x++] = (unsigned char)((y>>8)&255); + out[x++] = (unsigned char)(y&255); + } + + /* store number of zero padding bits */ + out[x++] = (unsigned char)((8 - inlen) & 7); + + /* store the bits in big endian format */ + for (y = buf = 0; y < inlen; y++) { + buf |= (getbit(in[y/8],7-y%8)?1:0) << (7 - (y & 7)); + if ((y & 7) == 7) { + out[x++] = buf; + buf = 0; + } + } + /* store last byte */ + if (inlen & 7) { + out[x++] = buf; + } + + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_encode_bit_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_length_bit_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_length_bit_string.c new file mode 100644 index 0000000..3b7a8e1 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/bit/der_length_bit_string.c @@ -0,0 +1,54 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_bit_string.c + ASN.1 DER, get length of BIT STRING, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of BIT STRING + @param nbits The number of bits in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_bit_string(unsigned long nbits, unsigned long *outlen) +{ + unsigned long nbytes; + LTC_ARGCHK(outlen != NULL); + + /* get the number of the bytes */ + nbytes = (nbits >> 3) + ((nbits & 7) ? 1 : 0) + 1; + + if (nbytes < 128) { + /* 03 LL PP DD DD DD ... */ + *outlen = 2 + nbytes; + } else if (nbytes < 256) { + /* 03 81 LL PP DD DD DD ... */ + *outlen = 3 + nbytes; + } else if (nbytes < 65536) { + /* 03 82 LL LL PP DD DD DD ... */ + *outlen = 4 + nbytes; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_length_bit_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_decode_boolean.c b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_decode_boolean.c new file mode 100644 index 0000000..f374aa6 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_decode_boolean.c @@ -0,0 +1,47 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_boolean.c + ASN.1 DER, decode a BOOLEAN, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a BOOLEAN + @param in The destination for the DER encoded BOOLEAN + @param inlen The size of the DER BOOLEAN + @param out [out] The boolean to decode + @return CRYPT_OK if successful +*/ +int der_decode_boolean(const unsigned char *in, unsigned long inlen, + int *out) +{ + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + + if (inlen != 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) { + return CRYPT_INVALID_ARG; + } + + *out = (in[2]==0xFF) ? 1 : 0; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c,v $ */ +/* $Revision: 1.2 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_encode_boolean.c b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_encode_boolean.c new file mode 100644 index 0000000..df497bf --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_encode_boolean.c @@ -0,0 +1,51 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_boolean.c + ASN.1 DER, encode a BOOLEAN, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a BOOLEAN + @param in The boolean to encode + @param out [out] The destination for the DER encoded BOOLEAN + @param outlen [in/out] The max size and resulting size of the DER BOOLEAN + @return CRYPT_OK if successful +*/ +int der_encode_boolean(int in, + unsigned char *out, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(out != NULL); + + if (*outlen < 3) { + *outlen = 3; + return CRYPT_BUFFER_OVERFLOW; + } + + *outlen = 3; + out[0] = 0x01; + out[1] = 0x01; + out[2] = in ? 0xFF : 0x00; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_length_boolean.c b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_length_boolean.c new file mode 100644 index 0000000..aa3e03d --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/boolean/der_length_boolean.c @@ -0,0 +1,35 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_boolean.c + ASN.1 DER, get length of a BOOLEAN, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of a BOOLEAN + @param outlen [out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_length_boolean(unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + *outlen = 3; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_length_boolean.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/choice/der_decode_choice.c b/crypto/userspace/libtomcrypt/pk/asn1/der/choice/der_decode_choice.c new file mode 100644 index 0000000..277c731 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/choice/der_decode_choice.c @@ -0,0 +1,182 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_choice.c + ASN.1 DER, decode a CHOICE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a CHOICE + @param in The DER encoded input + @param inlen [in/out] The size of the input and resulting size of read type + @param list The list of items to decode + @param outlen The number of items in the list + @return CRYPT_OK on success +*/ +int der_decode_choice(const unsigned char *in, unsigned long *inlen, + ltc_asn1_list *list, unsigned long outlen) +{ + unsigned long size, x, z; + void *data; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(list != NULL); + + /* get blk size */ + if (*inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* set all of the "used" flags to zero */ + for (x = 0; x < outlen; x++) { + list[x].used = 0; + } + + /* now scan until we have a winner */ + for (x = 0; x < outlen; x++) { + size = list[x].size; + data = list[x].data; + + switch (list[x].type) { + case LTC_ASN1_INTEGER: + if (der_decode_integer(in, *inlen, data) == CRYPT_OK) { + if (der_length_integer(data, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_SHORT_INTEGER: + if (der_decode_short_integer(in, *inlen, data) == CRYPT_OK) { + if (der_length_short_integer(size, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_BIT_STRING: + if (der_decode_bit_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_bit_string(size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_OCTET_STRING: + if (der_decode_octet_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_octet_string(size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_NULL: + if (*inlen == 2 && in[x] == 0x05 && in[x+1] == 0x00) { + *inlen = 2; + list[x].used = 1; + return CRYPT_OK; + } + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if (der_decode_object_identifier(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_object_identifier(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_IA5_STRING: + if (der_decode_ia5_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_ia5_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + + case LTC_ASN1_PRINTABLE_STRING: + if (der_decode_printable_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_printable_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_UTF8_STRING: + if (der_decode_utf8_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_utf8_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_UTCTIME: + z = *inlen; + if (der_decode_utctime(in, &z, data) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if (der_decode_sequence(in, *inlen, data, size) == CRYPT_OK) { + if (der_length_sequence(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + default: + return CRYPT_INVALID_ARG; + } + } + + return CRYPT_INVALID_PACKET; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/choice/der_decode_choice.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_decode_ia5_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_decode_ia5_string.c new file mode 100644 index 0000000..001477b --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_decode_ia5_string.c @@ -0,0 +1,96 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_ia5_string.c + ASN.1 DER, encode a IA5 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a IA5 STRING + @param in The DER encoded IA5 STRING + @param inlen The size of the DER IA5 STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int t; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x16 */ + if ((in[0] & 0x1F) != 0x16) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + t = der_ia5_value_decode(in[x++]); + if (t == -1) { + return CRYPT_INVALID_ARG; + } + out[y] = t; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_decode_ia5_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_encode_ia5_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_encode_ia5_string.c new file mode 100644 index 0000000..82ed466 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_encode_ia5_string.c @@ -0,0 +1,85 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_ia5_string.c + ASN.1 DER, encode a IA5 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Store an IA5 STRING + @param in The array of IA5 to store (one per char) + @param inlen The number of IA5 to store + @param out [out] The destination for the DER encoded IA5 STRING + @param outlen [in/out] The max size and resulting size of the DER IA5 STRING + @return CRYPT_OK if successful +*/ +int der_encode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_ia5_string(in, inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x16; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = der_ia5_char_encode(in[y]); + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_length_ia5_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_length_ia5_string.c new file mode 100644 index 0000000..4d60f8e --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/ia5/der_length_ia5_string.c @@ -0,0 +1,194 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_ia5_string.c + ASN.1 DER, get length of IA5 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +static const struct { + int code, value; +} ia5_table[] = { +{ '\0', 0 }, +{ '\a', 7 }, +{ '\b', 8 }, +{ '\t', 9 }, +{ '\n', 10 }, +{ '\f', 12 }, +{ '\r', 13 }, +{ ' ', 32 }, +{ '!', 33 }, +{ '"', 34 }, +{ '#', 35 }, +{ '$', 36 }, +{ '%', 37 }, +{ '&', 38 }, +{ '\'', 39 }, +{ '(', 40 }, +{ ')', 41 }, +{ '*', 42 }, +{ '+', 43 }, +{ ',', 44 }, +{ '-', 45 }, +{ '.', 46 }, +{ '/', 47 }, +{ '0', 48 }, +{ '1', 49 }, +{ '2', 50 }, +{ '3', 51 }, +{ '4', 52 }, +{ '5', 53 }, +{ '6', 54 }, +{ '7', 55 }, +{ '8', 56 }, +{ '9', 57 }, +{ ':', 58 }, +{ ';', 59 }, +{ '<', 60 }, +{ '=', 61 }, +{ '>', 62 }, +{ '?', 63 }, +{ '@', 64 }, +{ 'A', 65 }, +{ 'B', 66 }, +{ 'C', 67 }, +{ 'D', 68 }, +{ 'E', 69 }, +{ 'F', 70 }, +{ 'G', 71 }, +{ 'H', 72 }, +{ 'I', 73 }, +{ 'J', 74 }, +{ 'K', 75 }, +{ 'L', 76 }, +{ 'M', 77 }, +{ 'N', 78 }, +{ 'O', 79 }, +{ 'P', 80 }, +{ 'Q', 81 }, +{ 'R', 82 }, +{ 'S', 83 }, +{ 'T', 84 }, +{ 'U', 85 }, +{ 'V', 86 }, +{ 'W', 87 }, +{ 'X', 88 }, +{ 'Y', 89 }, +{ 'Z', 90 }, +{ '[', 91 }, +{ '\\', 92 }, +{ ']', 93 }, +{ '^', 94 }, +{ '_', 95 }, +{ '`', 96 }, +{ 'a', 97 }, +{ 'b', 98 }, +{ 'c', 99 }, +{ 'd', 100 }, +{ 'e', 101 }, +{ 'f', 102 }, +{ 'g', 103 }, +{ 'h', 104 }, +{ 'i', 105 }, +{ 'j', 106 }, +{ 'k', 107 }, +{ 'l', 108 }, +{ 'm', 109 }, +{ 'n', 110 }, +{ 'o', 111 }, +{ 'p', 112 }, +{ 'q', 113 }, +{ 'r', 114 }, +{ 's', 115 }, +{ 't', 116 }, +{ 'u', 117 }, +{ 'v', 118 }, +{ 'w', 119 }, +{ 'x', 120 }, +{ 'y', 121 }, +{ 'z', 122 }, +{ '{', 123 }, +{ '|', 124 }, +{ '}', 125 }, +{ '~', 126 } +}; + +int der_ia5_char_encode(int c) +{ + int x; + for (x = 0; x < (int)(sizeof(ia5_table)/sizeof(ia5_table[0])); x++) { + if (ia5_table[x].code == c) { + return ia5_table[x].value; + } + } + return -1; +} + +int der_ia5_value_decode(int v) +{ + int x; + for (x = 0; x < (int)(sizeof(ia5_table)/sizeof(ia5_table[0])); x++) { + if (ia5_table[x].value == v) { + return ia5_table[x].code; + } + } + return -1; +} + +/** + Gets length of DER encoding of IA5 STRING + @param octets The values you want to encode + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_ia5_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x; + + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(octets != NULL); + + /* scan string for validity */ + for (x = 0; x < noctets; x++) { + if (der_ia5_char_encode(octets[x]) == -1) { + return CRYPT_INVALID_ARG; + } + } + + if (noctets < 128) { + /* 16 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 16 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 16 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 16 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_length_ia5_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_decode_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_decode_integer.c new file mode 100644 index 0000000..d7b13cf --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_decode_integer.c @@ -0,0 +1,110 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_integer.c + ASN.1 DER, decode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a mp_int integer + @param in The DER encoded data + @param inlen Size of DER encoded data + @param num The first mp_int to decode + @return CRYPT_OK if successful +*/ +int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int_t num) +{ + unsigned long x, y, z; + int err; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(in != NULL); + + /* min DER INTEGER is 0x02 01 00 == 0 */ + if (inlen < (1 + 1 + 1)) { + return CRYPT_INVALID_PACKET; + } + + /* ok expect 0x02 when we AND with 0001 1111 [1F] */ + x = 0; + if ((in[x++] & 0x1F) != 0x02) { + return CRYPT_INVALID_PACKET; + } + + /* now decode the len stuff */ + z = in[x++]; + + if ((z & 0x80) == 0x00) { + /* short form */ + + /* will it overflow? */ + if (x + z > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* no so read it */ + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, z)) != CRYPT_OK) { + return err; + } + } else { + /* long form */ + z &= 0x7F; + + /* will number of length bytes overflow? (or > 4) */ + if (((x + z) > inlen) || (z > 4) || (z == 0)) { + return CRYPT_INVALID_PACKET; + } + + /* now read it in */ + y = 0; + while (z--) { + y = ((unsigned long)(in[x++])) | (y << 8); + } + + /* now will reading y bytes overrun? */ + if ((x + y) > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* no so read it */ + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, y)) != CRYPT_OK) { + return err; + } + } + + /* see if it's negative */ + if (in[x] & 0x80) { + mp_int tmp; + if (mp_init(&tmp) != CRYPT_OK) { + return CRYPT_MEM; + } + + if (mp_2expt(&tmp, mp_count_bits(num)) != CRYPT_OK || mp_sub(num, &tmp, num) != CRYPT_OK) { + mp_clear(&tmp); + return CRYPT_MEM; + } + mp_clear(&tmp); + } + + return CRYPT_OK; + +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_encode_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_encode_integer.c new file mode 100644 index 0000000..830446a --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_encode_integer.c @@ -0,0 +1,130 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_integer.c + ASN.1 DER, encode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/* Exports a positive bignum as DER format (upto 2^32 bytes in size) */ +/** + Store a mp_int integer + @param num The first mp_int to encode + @param out [out] The destination for the DER encoded integers + @param outlen [in/out] The max size and resulting size of the DER encoded integers + @return CRYPT_OK if successful +*/ +int der_encode_integer(mp_int_t num, unsigned char *out, unsigned long *outlen) +{ + unsigned long tmplen, y; + int err, leading_zero; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* find out how big this will be */ + if ((err = der_length_integer(num, &tmplen)) != CRYPT_OK) { + return err; + } + + if (*outlen < tmplen) { + *outlen = tmplen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (mp_cmp_d(num, 0) != LTC_MP_LT) { + /* we only need a leading zero if the msb of the first byte is one */ + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { + leading_zero = 1; + } else { + leading_zero = 0; + } + + /* get length of num in bytes (plus 1 since we force the msbyte to zero) */ + y = mp_unsigned_bin_size(num) + leading_zero; + } else { + leading_zero = 0; + y = mp_count_bits(num); + y = y + (8 - (y & 7)); + y = y >> 3; + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --y; + } + + /* now store initial data */ + *out++ = 0x02; + if (y < 128) { + /* short form */ + *out++ = (unsigned char)y; + } else if (y < 256) { + *out++ = 0x81; + *out++ = (unsigned char)y; + } else if (y < 65536UL) { + *out++ = 0x82; + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; + } else if (y < 16777216UL) { + *out++ = 0x83; + *out++ = (unsigned char)((y>>16)&255); + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; + } else { + return CRYPT_INVALID_ARG; + } + + /* now store msbyte of zero if num is non-zero */ + if (leading_zero) { + *out++ = 0x00; + } + + /* if it's not zero store it as big endian */ + if (mp_cmp_d(num, 0) == LTC_MP_GT) { + /* now store the mpint */ + if ((err = mp_to_unsigned_bin(num, out)) != CRYPT_OK) { + return err; + } + } else if (mp_iszero(num) != LTC_MP_YES) { + mp_int tmp; + + /* negative */ + if (mp_init(&tmp) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* 2^roundup and subtract */ + y = mp_count_bits(num); + y = y + (8 - (y & 7)); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) y -= 8; + if (mp_2expt(&tmp, y) != CRYPT_OK || mp_add(&tmp, num, &tmp) != CRYPT_OK) { + mp_clear(&tmp); + return CRYPT_MEM; + } + if ((err = mp_to_unsigned_bin(&tmp, out)) != CRYPT_OK) { + mp_clear(&tmp); + return err; + } + mp_clear(&tmp); + } + + /* we good */ + *outlen = tmplen; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_length_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_length_integer.c new file mode 100644 index 0000000..40addd5 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/integer/der_length_integer.c @@ -0,0 +1,82 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_integer.c + ASN.1 DER, get length of encoding, Tom St Denis +*/ + + +#ifdef LTC_DER +/** + Gets length of DER encoding of num + @param num The int to get the size of + @param outlen [out] The length of the DER encoding for the given integer + @return CRYPT_OK if successful +*/ +int der_length_integer(mp_int_t num, unsigned long *outlen) +{ + unsigned long z, len; + int leading_zero; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(outlen != NULL); + + if (mp_cmp_d(num, 0) != LTC_MP_LT) { + /* positive */ + + /* we only need a leading zero if the msb of the first byte is one */ + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { + leading_zero = 1; + } else { + leading_zero = 0; + } + + /* size for bignum */ + z = len = leading_zero + mp_unsigned_bin_size(num); + } else { + /* it's negative */ + /* find power of 2 that is a multiple of eight and greater than count bits */ + leading_zero = 0; + z = mp_count_bits(num); + z = z + (8 - (z & 7)); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --z; + len = z = z >> 3; + } + + /* now we need a length */ + if (z < 128) { + /* short form */ + ++len; + } else { + /* long form (relies on z != 0), assumes length bytes < 128 */ + ++len; + + while (z) { + ++len; + z >>= 8; + } + } + + /* we need a 0x02 to indicate it's INTEGER */ + ++len; + + /* return length */ + *outlen = len; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_decode_object_identifier.c b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_decode_object_identifier.c new file mode 100644 index 0000000..cdd296d --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_decode_object_identifier.c @@ -0,0 +1,99 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_object_identifier.c + ASN.1 DER, Decode Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Decode OID data and store the array of integers in words + @param in The OID DER encoded data + @param inlen The length of the OID data + @param words [out] The destination of the OID words + @param outlen [in/out] The number of OID words + @return CRYPT_OK if successful +*/ +int der_decode_object_identifier(const unsigned char *in, unsigned long inlen, + unsigned long *words, unsigned long *outlen) +{ + unsigned long x, y, t, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(outlen != NULL); + + /* header is at least 3 bytes */ + if (inlen < 3) { + return CRYPT_INVALID_PACKET; + } + + /* must be room for at least two words */ + if (*outlen < 2) { + return CRYPT_BUFFER_OVERFLOW; + } + + /* decode the packet header */ + x = 0; + if ((in[x++] & 0x1F) != 0x06) { + return CRYPT_INVALID_PACKET; + } + + /* get the length */ + if (in[x] < 128) { + len = in[x++]; + } else { + if (in[x] < 0x81 || in[x] > 0x82) { + return CRYPT_INVALID_PACKET; + } + y = in[x++] & 0x7F; + len = 0; + while (y--) { + len = (len << 8) | (unsigned long)in[x++]; + } + } + + if (len < 1 || (len + x) > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* decode words */ + y = 0; + t = 0; + while (len--) { + t = (t << 7) | (in[x] & 0x7F); + if (!(in[x++] & 0x80)) { + /* store t */ + if (y >= *outlen) { + return CRYPT_BUFFER_OVERFLOW; + } + if (y == 0) { + words[0] = t / 40; + words[1] = t % 40; + y = 2; + } else { + words[y++] = t; + } + t = 0; + } + } + + *outlen = y; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_encode_object_identifier.c b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_encode_object_identifier.c new file mode 100644 index 0000000..b26ebdf --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_encode_object_identifier.c @@ -0,0 +1,111 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_object_identifier.c + ASN.1 DER, Encode Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Encode an OID + @param words The words to encode (upto 32-bits each) + @param nwords The number of words in the OID + @param out [out] Destination of OID data + @param outlen [in/out] The max and resulting size of the OID + @return CRYPT_OK if successful +*/ +int der_encode_object_identifier(unsigned long *words, unsigned long nwords, + unsigned char *out, unsigned long *outlen) +{ + unsigned long i, x, y, z, t, mask, wordbuf; + int err; + + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* check length */ + if ((err = der_length_object_identifier(words, nwords, &x)) != CRYPT_OK) { + return err; + } + if (x > *outlen) { + *outlen = x; + return CRYPT_BUFFER_OVERFLOW; + } + + /* compute length to store OID data */ + z = 0; + wordbuf = words[0] * 40 + words[1]; + for (y = 1; y < nwords; y++) { + t = der_object_identifier_bits(wordbuf); + z += t/7 + ((t%7) ? 1 : 0) + (wordbuf == 0 ? 1 : 0); + if (y < nwords - 1) { + wordbuf = words[y + 1]; + } + } + + /* store header + length */ + x = 0; + out[x++] = 0x06; + if (z < 128) { + out[x++] = (unsigned char)z; + } else if (z < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)z; + } else if (z < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((z>>8)&255); + out[x++] = (unsigned char)(z&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store first byte */ + wordbuf = words[0] * 40 + words[1]; + for (i = 1; i < nwords; i++) { + /* store 7 bit words in little endian */ + t = wordbuf & 0xFFFFFFFF; + if (t) { + y = x; + mask = 0; + while (t) { + out[x++] = (unsigned char)((t & 0x7F) | mask); + t >>= 7; + mask |= 0x80; /* upper bit is set on all but the last byte */ + } + /* now swap bytes y...x-1 */ + z = x - 1; + while (y < z) { + t = out[y]; out[y] = out[z]; out[z] = (unsigned char)t; + ++y; + --z; + } + } else { + /* zero word */ + out[x++] = 0x00; + } + + if (i < nwords - 1) { + wordbuf = words[i + 1]; + } + } + + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_encode_object_identifier.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_length_object_identifier.c b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_length_object_identifier.c new file mode 100644 index 0000000..ada54ab --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/object_identifier/der_length_object_identifier.c @@ -0,0 +1,89 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_object_identifier.c + ASN.1 DER, get length of Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER + +unsigned long der_object_identifier_bits(unsigned long x) +{ + unsigned long c; + x &= 0xFFFFFFFF; + c = 0; + while (x) { + ++c; + x >>= 1; + } + return c; +} + + +/** + Gets length of DER encoding of Object Identifier + @param nwords The number of OID words + @param words The actual OID words to get the size of + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_object_identifier(unsigned long *words, unsigned long nwords, unsigned long *outlen) +{ + unsigned long y, z, t, wordbuf; + + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(outlen != NULL); + + + /* must be >= 2 words */ + if (nwords < 2) { + return CRYPT_INVALID_ARG; + } + + /* word1 = 0,1,2,3 and word2 0..39 */ + if (words[0] > 3 || (words[0] < 2 && words[1] > 39)) { + return CRYPT_INVALID_ARG; + } + + /* leading word is the first two */ + z = 0; + wordbuf = words[0] * 40 + words[1]; + for (y = 1; y < nwords; y++) { + t = der_object_identifier_bits(wordbuf); + z += t/7 + ((t%7) ? 1 : 0) + (wordbuf == 0 ? 1 : 0); + if (y < nwords - 1) { + /* grab next word */ + wordbuf = words[y+1]; + } + } + + /* now depending on the length our length encoding changes */ + if (z < 128) { + z += 2; + } else if (z < 256) { + z += 3; + } else if (z < 65536UL) { + z += 4; + } else { + return CRYPT_INVALID_ARG; + } + + *outlen = z; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_length_object_identifier.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_decode_octet_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_decode_octet_string.c new file mode 100644 index 0000000..ab5bc10 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_decode_octet_string.c @@ -0,0 +1,91 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_octet_string.c + ASN.1 DER, encode a OCTET STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a OCTET STRING + @param in The DER encoded OCTET STRING + @param inlen The size of the DER OCTET STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x04 */ + if ((in[0] & 0x1F) != 0x04) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + out[y] = in[x++]; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_decode_octet_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_encode_octet_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_encode_octet_string.c new file mode 100644 index 0000000..64a0770 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_encode_octet_string.c @@ -0,0 +1,86 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_octet_string.c + ASN.1 DER, encode a OCTET STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store an OCTET STRING + @param in The array of OCTETS to store (one per char) + @param inlen The number of OCTETS to store + @param out [out] The destination for the DER encoded OCTET STRING + @param outlen [in/out] The max size and resulting size of the DER OCTET STRING + @return CRYPT_OK if successful +*/ +int der_encode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_octet_string(inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x04; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = in[y]; + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_length_octet_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_length_octet_string.c new file mode 100644 index 0000000..c494159 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/octet/der_length_octet_string.c @@ -0,0 +1,53 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_octet_string.c + ASN.1 DER, get length of OCTET STRING, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of OCTET STRING + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_octet_string(unsigned long noctets, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + + if (noctets < 128) { + /* 04 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 04 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 04 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 04 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_length_octet_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_decode_printable_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_decode_printable_string.c new file mode 100644 index 0000000..8504f77 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_decode_printable_string.c @@ -0,0 +1,96 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_printable_string.c + ASN.1 DER, encode a printable STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a printable STRING + @param in The DER encoded printable STRING + @param inlen The size of the DER printable STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int t; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x13 */ + if ((in[0] & 0x1F) != 0x13) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + t = der_printable_value_decode(in[x++]); + if (t == -1) { + return CRYPT_INVALID_ARG; + } + out[y] = t; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_decode_printable_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_encode_printable_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_encode_printable_string.c new file mode 100644 index 0000000..deccdee --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_encode_printable_string.c @@ -0,0 +1,85 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_printable_string.c + ASN.1 DER, encode a printable STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Store an printable STRING + @param in The array of printable to store (one per char) + @param inlen The number of printable to store + @param out [out] The destination for the DER encoded printable STRING + @param outlen [in/out] The max size and resulting size of the DER printable STRING + @return CRYPT_OK if successful +*/ +int der_encode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_printable_string(in, inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x13; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = der_printable_char_encode(in[y]); + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_length_printable_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_length_printable_string.c new file mode 100644 index 0000000..997d3b5 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/printable_string/der_length_printable_string.c @@ -0,0 +1,166 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_printable_string.c + ASN.1 DER, get length of Printable STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +static const struct { + int code, value; +} printable_table[] = { +{ ' ', 32 }, +{ '\'', 39 }, +{ '(', 40 }, +{ ')', 41 }, +{ '+', 43 }, +{ ',', 44 }, +{ '-', 45 }, +{ '.', 46 }, +{ '/', 47 }, +{ '0', 48 }, +{ '1', 49 }, +{ '2', 50 }, +{ '3', 51 }, +{ '4', 52 }, +{ '5', 53 }, +{ '6', 54 }, +{ '7', 55 }, +{ '8', 56 }, +{ '9', 57 }, +{ ':', 58 }, +{ '=', 61 }, +{ '?', 63 }, +{ 'A', 65 }, +{ 'B', 66 }, +{ 'C', 67 }, +{ 'D', 68 }, +{ 'E', 69 }, +{ 'F', 70 }, +{ 'G', 71 }, +{ 'H', 72 }, +{ 'I', 73 }, +{ 'J', 74 }, +{ 'K', 75 }, +{ 'L', 76 }, +{ 'M', 77 }, +{ 'N', 78 }, +{ 'O', 79 }, +{ 'P', 80 }, +{ 'Q', 81 }, +{ 'R', 82 }, +{ 'S', 83 }, +{ 'T', 84 }, +{ 'U', 85 }, +{ 'V', 86 }, +{ 'W', 87 }, +{ 'X', 88 }, +{ 'Y', 89 }, +{ 'Z', 90 }, +{ 'a', 97 }, +{ 'b', 98 }, +{ 'c', 99 }, +{ 'd', 100 }, +{ 'e', 101 }, +{ 'f', 102 }, +{ 'g', 103 }, +{ 'h', 104 }, +{ 'i', 105 }, +{ 'j', 106 }, +{ 'k', 107 }, +{ 'l', 108 }, +{ 'm', 109 }, +{ 'n', 110 }, +{ 'o', 111 }, +{ 'p', 112 }, +{ 'q', 113 }, +{ 'r', 114 }, +{ 's', 115 }, +{ 't', 116 }, +{ 'u', 117 }, +{ 'v', 118 }, +{ 'w', 119 }, +{ 'x', 120 }, +{ 'y', 121 }, +{ 'z', 122 }, +}; + +int der_printable_char_encode(int c) +{ + int x; + for (x = 0; x < (int)(sizeof(printable_table)/sizeof(printable_table[0])); x++) { + if (printable_table[x].code == c) { + return printable_table[x].value; + } + } + return -1; +} + +int der_printable_value_decode(int v) +{ + int x; + for (x = 0; x < (int)(sizeof(printable_table)/sizeof(printable_table[0])); x++) { + if (printable_table[x].value == v) { + return printable_table[x].code; + } + } + return -1; +} + +/** + Gets length of DER encoding of Printable STRING + @param octets The values you want to encode + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_printable_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x; + + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(octets != NULL); + + /* scan string for validity */ + for (x = 0; x < noctets; x++) { + if (der_printable_char_encode(octets[x]) == -1) { + return CRYPT_INVALID_ARG; + } + } + + if (noctets < 128) { + /* 16 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 16 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 16 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 16 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_length_printable_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_ex.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_ex.c new file mode 100644 index 0000000..2067437 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_ex.c @@ -0,0 +1,287 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + + +/** + @file der_decode_sequence_ex.c + ASN.1 DER, decode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a SEQUENCE + @param in The DER encoded input + @param inlen The size of the input + @param list The list of items to decode + @param outlen The number of items in the list + @param ordered Search an unordeded or ordered list + @return CRYPT_OK on success +*/ +int der_decode_sequence_ex(const unsigned char *in, unsigned long inlen, + ltc_asn1_list *list, unsigned long outlen, int ordered) +{ + int err, type; + unsigned long size, x, y, z, i, blksize; + void *data; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(list != NULL); + + /* get blk size */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* sequence type? We allow 0x30 SEQUENCE and 0x31 SET since fundamentally they're the same structure */ + x = 0; + if (in[x] != 0x30 && in[x] != 0x31) { + return CRYPT_INVALID_PACKET; + } + ++x; + + if (in[x] < 128) { + blksize = in[x++]; + } else if (in[x] & 0x80) { + if (in[x] < 0x81 || in[x] > 0x83) { + return CRYPT_INVALID_PACKET; + } + y = in[x++] & 0x7F; + + /* would reading the len bytes overrun? */ + if (x + y > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read len */ + blksize = 0; + while (y--) { + blksize = (blksize << 8) | (unsigned long)in[x++]; + } + } + + /* would this blksize overflow? */ + if (x + blksize > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* mark all as unused */ + for (i = 0; i < outlen; i++) { + list[i].used = 0; + } + + /* ok read data */ + inlen = blksize; + for (i = 0; i < outlen; i++) { + z = 0; + type = list[i].type; + size = list[i].size; + data = list[i].data; + if (!ordered && list[i].used == 1) { continue; } + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + z = inlen; + if ((err = der_decode_boolean(in + x, z, ((int *)data))) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = der_length_boolean(&z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_INTEGER: + z = inlen; + if ((err = der_decode_integer(in + x, z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_integer(data, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_SHORT_INTEGER: + z = inlen; + if ((err = der_decode_short_integer(in + x, z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_short_integer(((unsigned long*)data)[0], &z)) != CRYPT_OK) { + goto LBL_ERR; + } + + break; + + case LTC_ASN1_BIT_STRING: + z = inlen; + if ((err = der_decode_bit_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_bit_string(size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_OCTET_STRING: + z = inlen; + if ((err = der_decode_octet_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_octet_string(size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_NULL: + if (inlen < 2 || in[x] != 0x05 || in[x+1] != 0x00) { + if (!ordered) { continue; } + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + z = 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + z = inlen; + if ((err = der_decode_object_identifier(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_object_identifier(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_IA5_STRING: + z = inlen; + if ((err = der_decode_ia5_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_ia5_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + + case LTC_ASN1_PRINTABLE_STRING: + z = inlen; + if ((err = der_decode_printable_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_printable_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_UTF8_STRING: + z = inlen; + if ((err = der_decode_utf8_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_utf8_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_UTCTIME: + z = inlen; + if ((err = der_decode_utctime(in + x, &z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + break; + + case LTC_ASN1_SET: + z = inlen; + if ((err = der_decode_set(in + x, z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_sequence(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + /* detect if we have the right type */ + if ((type == LTC_ASN1_SETOF && (in[x] & 0x3F) != 0x31) || (type == LTC_ASN1_SEQUENCE && (in[x] & 0x3F) != 0x30)) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + z = inlen; + if ((err = der_decode_sequence(in + x, z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_sequence(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + + case LTC_ASN1_CHOICE: + z = inlen; + if ((err = der_decode_choice(in + x, &z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + break; + + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + x += z; + inlen -= z; + list[i].used = 1; + if (!ordered) { + /* restart the decoder */ + i = -1; + } + } + + for (i = 0; i < outlen; i++) { + if (list[i].used == 0) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + } + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_ex.c,v $ */ +/* $Revision: 1.16 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_flexi.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_flexi.c new file mode 100644 index 0000000..3f01a57 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_flexi.c @@ -0,0 +1,394 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file der_decode_sequence_flexi.c + ASN.1 DER, decode an array of ASN.1 types with a flexi parser, Tom St Denis +*/ + +#ifdef LTC_DER + +static unsigned long fetch_length(const unsigned char *in, unsigned long inlen) +{ + unsigned long x, y, z; + + y = 0; + + /* skip type and read len */ + if (inlen < 2) { + return 0xFFFFFFFF; + } + ++in; ++y; + + /* read len */ + x = *in++; ++y; + + /* <128 means literal */ + if (x < 128) { + return x+y; + } + x &= 0x7F; /* the lower 7 bits are the length of the length */ + inlen -= 2; + + /* len means len of len! */ + if (x == 0 || x > 4 || x > inlen) { + return 0xFFFFFFFF; + } + + y += x; + z = 0; + while (x--) { + z = (z<<8) | ((unsigned long)*in); + ++in; + } + return z+y; +} + +/** + ASN.1 DER Flexi(ble) decoder will decode arbitrary DER packets and create a linked list of the decoded elements. + @param in The input buffer + @param inlen [in/out] The length of the input buffer and on output the amount of decoded data + @param out [out] A pointer to the linked list + @return CRYPT_OK on success. +*/ +int der_decode_sequence_flexi(const unsigned char *in, unsigned long *inlen, ltc_asn1_list **out) +{ + ltc_asn1_list *l; + unsigned long err, type, len, totlen, x, y; + void *realloc_tmp; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(out != NULL); + + l = NULL; + totlen = 0; + + /* scan the input and and get lengths and what not */ + while (*inlen) { + /* read the type byte */ + type = *in; + + /* fetch length */ + len = fetch_length(in, *inlen); + if (len > *inlen) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* alloc new link */ + if (l == NULL) { + l = XCALLOC(1, sizeof(*l)); + if (l == NULL) { + err = CRYPT_MEM; + goto error; + } + } else { + l->next = XCALLOC(1, sizeof(*l)); + if (l->next == NULL) { + err = CRYPT_MEM; + goto error; + } + l->next->prev = l; + l = l->next; + } + + /* now switch on type */ + switch (type) { + case 0x01: /* BOOLEAN */ + l->type = LTC_ASN1_BOOLEAN; + l->size = 1; + l->data = XCALLOC(1, sizeof(int)); + + if ((err = der_decode_boolean(in, *inlen, l->data)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_boolean(&len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x02: /* INTEGER */ + /* init field */ + l->type = LTC_ASN1_INTEGER; + l->size = 1; + + l->data = XMALLOC(sizeof(mp_int)); + if (l->data == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = mp_init((mp_int_t)l->data)) != CRYPT_OK) { + goto error; + } + + /* decode field */ + if ((err = der_decode_integer(in, *inlen, (mp_int_t)l->data)) != CRYPT_OK) { + goto error; + } + + /* calc length of object */ + if ((err = der_length_integer((mp_int_t)l->data, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x03: /* BIT */ + /* init field */ + l->type = LTC_ASN1_BIT_STRING; + l->size = len * 8; /* *8 because we store decoded bits one per char and they are encoded 8 per char. */ + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_bit_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_bit_string(l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x04: /* OCTET */ + + /* init field */ + l->type = LTC_ASN1_OCTET_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_octet_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_octet_string(l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x05: /* NULL */ + + /* valid NULL is 0x05 0x00 */ + if (in[0] != 0x05 || in[1] != 0x00) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* simple to store ;-) */ + l->type = LTC_ASN1_NULL; + l->data = NULL; + l->size = 0; + len = 2; + + break; + + case 0x06: /* OID */ + + /* init field */ + l->type = LTC_ASN1_OBJECT_IDENTIFIER; + l->size = len; + + if ((l->data = XCALLOC(len, sizeof(unsigned long))) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_object_identifier(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_object_identifier(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + + /* resize it to save a bunch of mem */ + if ((realloc_tmp = XREALLOC(l->data, l->size * sizeof(unsigned long))) == NULL) { + /* out of heap but this is not an error */ + break; + } + l->data = realloc_tmp; + break; + + case 0x0C: /* UTF8 */ + + /* init field */ + l->type = LTC_ASN1_UTF8_STRING; + l->size = len; + + if ((l->data = XCALLOC(sizeof(wchar_t), l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_utf8_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_utf8_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x13: /* PRINTABLE */ + + /* init field */ + l->type = LTC_ASN1_PRINTABLE_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_printable_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_printable_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x16: /* IA5 */ + + /* init field */ + l->type = LTC_ASN1_IA5_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_ia5_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_ia5_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x17: /* UTC TIME */ + + /* init field */ + l->type = LTC_ASN1_UTCTIME; + l->size = 1; + + if ((l->data = XCALLOC(1, sizeof(ltc_utctime))) == NULL) { + err = CRYPT_MEM; + goto error; + } + + len = *inlen; + if ((err = der_decode_utctime(in, &len, l->data)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_utctime(l->data, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x30: /* SEQUENCE */ + case 0x31: /* SET */ + + /* init field */ + l->type = (type == 0x30) ? LTC_ASN1_SEQUENCE : LTC_ASN1_SET; + + /* we have to decode the SEQUENCE header and get it's length */ + + /* move past type */ + ++in; --(*inlen); + + /* read length byte */ + x = *in++; --(*inlen); + + /* smallest SEQUENCE/SET header */ + y = 2; + + /* now if it's > 127 the next bytes are the length of the length */ + if (x > 128) { + x &= 0x7F; + in += x; + *inlen -= x; + + /* update sequence header len */ + y += x; + } + + /* Sequence elements go as child */ + len = len - y; + if ((err = der_decode_sequence_flexi(in, &len, &(l->child))) != CRYPT_OK) { + goto error; + } + + /* len update */ + totlen += y; + + /* link them up y0 */ + l->child->parent = l; + + break; + default: + /* invalid byte ... this is a soft error */ + /* remove link */ + l = l->prev; + XFREE(l->next); + l->next = NULL; + goto outside; + } + + /* advance pointers */ + totlen += len; + in += len; + *inlen -= len; + } + +outside: + + /* rewind l please */ + while (l->prev != NULL || l->parent != NULL) { + if (l->parent != NULL) { + l = l->parent; + } else { + l = l->prev; + } + } + + /* return */ + *out = l; + *inlen = totlen; + return CRYPT_OK; + +error: + /* free list */ + der_sequence_free(l); + + return err; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_flexi.c,v $ */ +/* $Revision: 1.26 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_multi.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_multi.c new file mode 100644 index 0000000..d1b7878 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_decode_sequence_multi.c @@ -0,0 +1,140 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + + +/** + @file der_decode_sequence_multi.c + ASN.1 DER, decode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a SEQUENCE type using a VA list + @param in Input buffer + @param inlen Length of input in octets + @remark <...> is of the form (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_decode_sequence_multi(const unsigned char *in, unsigned long inlen, ...) +{ + int err, type; + unsigned long size, x; + void *data; + va_list args; + ltc_asn1_list *list; + + LTC_ARGCHK(in != NULL); + + /* get size of output that will be required */ + va_start(args, inlen); + x = 0; + for (;;) { + type = va_arg(args, int); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_CHOICE: + ++x; + break; + + default: + va_end(args); + return CRYPT_INVALID_ARG; + } + } + va_end(args); + + /* allocate structure for x elements */ + if (x == 0) { + return CRYPT_NOP; + } + + list = XCALLOC(sizeof(*list), x); + if (list == NULL) { + return CRYPT_MEM; + } + + /* fill in the structure */ + va_start(args, inlen); + x = 0; + for (;;) { + type = va_arg(args, int); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_CHOICE: + list[x].type = type; + list[x].size = size; + list[x++].data = data; + break; + + default: + va_end(args); + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + va_end(args); + + err = der_decode_sequence(in, inlen, list, x); +LBL_ERR: + XFREE(list); + return err; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_ex.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_ex.c new file mode 100644 index 0000000..e92f7c3 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_ex.c @@ -0,0 +1,335 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + + +/** + @file der_encode_sequence_ex.c + ASN.1 DER, encode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Encode a SEQUENCE + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @param type_of LTC_ASN1_SEQUENCE or LTC_ASN1_SET/LTC_ASN1_SETOF + @return CRYPT_OK on success +*/ +int der_encode_sequence_ex(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int type_of) +{ + int err, type; + unsigned long size, x, y, z, i; + void *data; + + LTC_ARGCHK(list != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + y = 0; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + if ((err = der_length_boolean(&x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_INTEGER: + if ((err = der_length_integer(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SHORT_INTEGER: + if ((err = der_length_short_integer(*((unsigned long*)data), &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_BIT_STRING: + if ((err = der_length_bit_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_OCTET_STRING: + if ((err = der_length_octet_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_NULL: + y += 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if ((err = der_length_object_identifier(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_IA5_STRING: + if ((err = der_length_ia5_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_PRINTABLE_STRING: + if ((err = der_length_printable_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTF8_STRING: + if ((err = der_length_utf8_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTCTIME: + if ((err = der_length_utctime(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if ((err = der_length_sequence(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + + /* calc header size */ + z = y; + if (y < 128) { + y += 2; + } else if (y < 256) { + /* 0x30 0x81 LL */ + y += 3; + } else if (y < 65536UL) { + /* 0x30 0x82 LL LL */ + y += 4; + } else if (y < 16777216UL) { + /* 0x30 0x83 LL LL LL */ + y += 5; + } else { + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + + /* too big ? */ + if (*outlen < y) { + *outlen = y; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* store header */ + x = 0; + out[x++] = (type_of == LTC_ASN1_SEQUENCE) ? 0x30 : 0x31; + + if (z < 128) { + out[x++] = (unsigned char)z; + } else if (z < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)z; + } else if (z < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((z>>8UL)&255); + out[x++] = (unsigned char)(z&255); + } else if (z < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((z>>16UL)&255); + out[x++] = (unsigned char)((z>>8UL)&255); + out[x++] = (unsigned char)(z&255); + } + + /* store data */ + *outlen -= x; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + z = *outlen; + if ((err = der_encode_boolean(*((int *)data), out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_INTEGER: + z = *outlen; + if ((err = der_encode_integer(data, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SHORT_INTEGER: + z = *outlen; + if ((err = der_encode_short_integer(*((unsigned long*)data), out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_BIT_STRING: + z = *outlen; + if ((err = der_encode_bit_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_OCTET_STRING: + z = *outlen; + if ((err = der_encode_octet_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_NULL: + out[x++] = 0x05; + out[x++] = 0x00; + *outlen -= 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + z = *outlen; + if ((err = der_encode_object_identifier(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_IA5_STRING: + z = *outlen; + if ((err = der_encode_ia5_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_PRINTABLE_STRING: + z = *outlen; + if ((err = der_encode_printable_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_UTF8_STRING: + z = *outlen; + if ((err = der_encode_utf8_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_UTCTIME: + z = *outlen; + if ((err = der_encode_utctime(data, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SET: + z = *outlen; + if ((err = der_encode_set(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SETOF: + z = *outlen; + if ((err = der_encode_setof(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SEQUENCE: + z = *outlen; + if ((err = der_encode_sequence_ex(data, size, out + x, &z, type)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + *outlen = x; + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_multi.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_multi.c new file mode 100644 index 0000000..7e813172 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_encode_sequence_multi.c @@ -0,0 +1,139 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + + +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...) +{ + int err, type; + unsigned long size, x; + void *data; + va_list args; + ltc_asn1_list *list; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + va_start(args, outlen); + x = 0; + for (;;) { + type = va_arg(args, int); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + ++x; + break; + + default: + va_end(args); + return CRYPT_INVALID_ARG; + } + } + va_end(args); + + /* allocate structure for x elements */ + if (x == 0) { + return CRYPT_NOP; + } + + list = XCALLOC(sizeof(*list), x); + if (list == NULL) { + return CRYPT_MEM; + } + + /* fill in the structure */ + va_start(args, outlen); + x = 0; + for (;;) { + type = va_arg(args, int); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + list[x].type = type; + list[x].size = size; + list[x++].data = data; + break; + + default: + va_end(args); + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + va_end(args); + + err = der_encode_sequence(list, x, out, outlen); +LBL_ERR: + XFREE(list); + return err; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_multi.c,v $ */ +/* $Revision: 1.12 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_length_sequence.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_length_sequence.c new file mode 100644 index 0000000..d2e9803 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_length_sequence.c @@ -0,0 +1,169 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_sequence.c + ASN.1 DER, length a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Get the length of a DER sequence + @param list The sequences of items in the SEQUENCE + @param inlen The number of items + @param outlen [out] The length required in octets to store it + @return CRYPT_OK on success +*/ +int der_length_sequence(ltc_asn1_list *list, unsigned long inlen, + unsigned long *outlen) +{ + int err, type; + unsigned long size, x, y, z, i; + void *data; + + LTC_ARGCHK(list != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + y = 0; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + if ((err = der_length_boolean(&x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_INTEGER: + if ((err = der_length_integer(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SHORT_INTEGER: + if ((err = der_length_short_integer(*((unsigned long *)data), &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_BIT_STRING: + if ((err = der_length_bit_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_OCTET_STRING: + if ((err = der_length_octet_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_NULL: + y += 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if ((err = der_length_object_identifier(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_IA5_STRING: + if ((err = der_length_ia5_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_PRINTABLE_STRING: + if ((err = der_length_printable_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTCTIME: + if ((err = der_length_utctime(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTF8_STRING: + if ((err = der_length_utf8_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if ((err = der_length_sequence(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + + /* calc header size */ + z = y; + if (y < 128) { + y += 2; + } else if (y < 256) { + /* 0x30 0x81 LL */ + y += 3; + } else if (y < 65536UL) { + /* 0x30 0x82 LL LL */ + y += 4; + } else if (y < 16777216UL) { + /* 0x30 0x83 LL LL LL */ + y += 5; + } else { + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + + /* store size */ + *outlen = y; + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_length_sequence.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_sequence_free.c b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_sequence_free.c new file mode 100644 index 0000000..eed73e7 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/sequence/der_sequence_free.c @@ -0,0 +1,66 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file der_sequence_free.c + ASN.1 DER, free's a structure allocated by der_decode_sequence_flexi(), Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Free memory allocated by der_decode_sequence_flexi() + @param in The list to free +*/ +void der_sequence_free(ltc_asn1_list *in) +{ + ltc_asn1_list *l; + + /* walk to the start of the chain */ + while (in->prev != NULL || in->parent != NULL) { + if (in->parent != NULL) { + in = in->parent; + } else { + in = in->prev; + } + } + + /* now walk the list and free stuff */ + while (in != NULL) { + /* is there a child? */ + if (in->child) { + /* disconnect */ + in->child->parent = NULL; + der_sequence_free(in->child); + } + + switch (in->type) { + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: break; + case LTC_ASN1_INTEGER : if (in->data != NULL) { mp_clear(in->data); XFREE(in->data); } break; + default : if (in->data != NULL) { XFREE(in->data); } + } + + /* move to next and free current */ + l = in->next; + XFREE(in); + in = l; + } +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_set.c b/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_set.c new file mode 100644 index 0000000..babb9ea --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_set.c @@ -0,0 +1,104 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file der_encode_set.c + ASN.1 DER, Encode a SET, Tom St Denis +*/ + +#ifdef LTC_DER + +/* LTC define to ASN.1 TAG */ +static int ltc_to_asn1(int v) +{ + switch (v) { + case LTC_ASN1_BOOLEAN: return 0x01; + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: return 0x02; + case LTC_ASN1_BIT_STRING: return 0x03; + case LTC_ASN1_OCTET_STRING: return 0x04; + case LTC_ASN1_NULL: return 0x05; + case LTC_ASN1_OBJECT_IDENTIFIER: return 0x06; + case LTC_ASN1_UTF8_STRING: return 0x0C; + case LTC_ASN1_PRINTABLE_STRING: return 0x13; + case LTC_ASN1_IA5_STRING: return 0x16; + case LTC_ASN1_UTCTIME: return 0x17; + case LTC_ASN1_SEQUENCE: return 0x30; + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: return 0x31; + default: return -1; + } +} + + +static int qsort_helper(const void *a, const void *b) +{ + ltc_asn1_list *A = (ltc_asn1_list *)a, *B = (ltc_asn1_list *)b; + int r; + + r = ltc_to_asn1(A->type) - ltc_to_asn1(B->type); + + /* for QSORT the order is UNDEFINED if they are "equal" which means it is NOT DETERMINISTIC. So we force it to be :-) */ + if (r == 0) { + /* their order in the original list now determines the position */ + return A->used - B->used; + } else { + return r; + } +} + +/* + Encode a SET type + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @return CRYPT_OK on success +*/ +int der_encode_set(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + ltc_asn1_list *copy; + unsigned long x; + int err; + + /* make copy of list */ + copy = XCALLOC(inlen, sizeof(*copy)); + if (copy == NULL) { + return CRYPT_MEM; + } + + /* fill in used member with index so we can fully sort it */ + for (x = 0; x < inlen; x++) { + copy[x] = list[x]; + copy[x].used = x; + } + + /* sort it by the "type" field */ + XQSORT(copy, inlen, sizeof(*copy), &qsort_helper); + + /* call der_encode_sequence_ex() */ + err = der_encode_sequence_ex(copy, inlen, out, outlen, LTC_ASN1_SET); + + /* free list */ + XFREE(copy); + + return err; +} + + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/set/der_encode_set.c,v $ */ +/* $Revision: 1.12 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_setof.c b/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_setof.c new file mode 100644 index 0000000..2a343f2 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/set/der_encode_setof.c @@ -0,0 +1,163 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file der_encode_setof.c + ASN.1 DER, Encode SET OF, Tom St Denis +*/ + +#ifdef LTC_DER + +struct edge { + unsigned char *start; + unsigned long size; +}; + +static int qsort_helper(const void *a, const void *b) +{ + struct edge *A = (struct edge *)a, *B = (struct edge *)b; + int r; + unsigned long x; + + /* compare min length */ + r = XMEMCMP(A->start, B->start, MIN(A->size, B->size)); + + if (r == 0 && A->size != B->size) { + if (A->size > B->size) { + for (x = B->size; x < A->size; x++) { + if (A->start[x]) { + return 1; + } + } + } else { + for (x = A->size; x < B->size; x++) { + if (B->start[x]) { + return -1; + } + } + } + } + + return r; +} + +/** + Encode a SETOF stucture + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @return CRYPT_OK on success +*/ +int der_encode_setof(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, z, hdrlen; + int err; + struct edge *edges; + unsigned char *ptr, *buf; + + /* check that they're all the same type */ + for (x = 1; x < inlen; x++) { + if (list[x].type != list[x-1].type) { + return CRYPT_INVALID_ARG; + } + } + + /* alloc buffer to store copy of output */ + buf = XCALLOC(1, *outlen); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* encode list */ + if ((err = der_encode_sequence_ex(list, inlen, buf, outlen, LTC_ASN1_SETOF)) != CRYPT_OK) { + XFREE(buf); + return err; + } + + /* allocate edges */ + edges = XCALLOC(inlen, sizeof(*edges)); + if (edges == NULL) { + XFREE(buf); + return CRYPT_MEM; + } + + /* skip header */ + ptr = buf + 1; + + /* now skip length data */ + x = *ptr++; + if (x >= 0x80) { + ptr += (x & 0x7F); + } + + /* get the size of the static header */ + hdrlen = ((unsigned long)ptr) - ((unsigned long)buf); + + + /* scan for edges */ + x = 0; + while (ptr < (buf + *outlen)) { + /* store start */ + edges[x].start = ptr; + + /* skip type */ + z = 1; + + /* parse length */ + y = ptr[z++]; + if (y < 128) { + edges[x].size = y; + } else { + y &= 0x7F; + edges[x].size = 0; + while (y--) { + edges[x].size = (edges[x].size << 8) | ((unsigned long)ptr[z++]); + } + } + + /* skip content */ + edges[x].size += z; + ptr += edges[x].size; + ++x; + } + + /* sort based on contents (using edges) */ + XQSORT(edges, inlen, sizeof(*edges), &qsort_helper); + + /* copy static header */ + XMEMCPY(out, buf, hdrlen); + + /* copy+sort using edges+indecies to output from buffer */ + for (y = hdrlen, x = 0; x < inlen; x++) { + XMEMCPY(out+y, edges[x].start, edges[x].size); + y += edges[x].size; + } + +#ifdef LTC_CLEAN_STACK + zeromem(buf, *outlen); +#endif + + /* free buffers */ + XFREE(edges); + XFREE(buf); + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/set/der_encode_setof.c,v $ */ +/* $Revision: 1.12 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_decode_short_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_decode_short_integer.c new file mode 100644 index 0000000..fbb89a4 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_decode_short_integer.c @@ -0,0 +1,68 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_short_integer.c + ASN.1 DER, decode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a short integer + @param in The DER encoded data + @param inlen Size of data + @param num [out] The integer to decode + @return CRYPT_OK if successful +*/ +int der_decode_short_integer(const unsigned char *in, unsigned long inlen, unsigned long *num) +{ + unsigned long len, x, y; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(in != NULL); + + /* check length */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check header */ + x = 0; + if ((in[x++] & 0x1F) != 0x02) { + return CRYPT_INVALID_PACKET; + } + + /* get the packet len */ + len = in[x++]; + + if (x + len > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read number */ + y = 0; + while (len--) { + y = (y<<8) | (unsigned long)in[x++]; + } + *num = y; + + return CRYPT_OK; + +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_decode_short_integer.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_encode_short_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_encode_short_integer.c new file mode 100644 index 0000000..cd9e6d1 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_encode_short_integer.c @@ -0,0 +1,97 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_short_integer.c + ASN.1 DER, encode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a short integer in the range (0,2^32-1) + @param num The integer to encode + @param out [out] The destination for the DER encoded integers + @param outlen [in/out] The max size and resulting size of the DER encoded integers + @return CRYPT_OK if successful +*/ +int der_encode_short_integer(unsigned long num, unsigned char *out, unsigned long *outlen) +{ + unsigned long len, x, y, z; + int err; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* force to 32 bits */ + num &= 0xFFFFFFFFUL; + + /* find out how big this will be */ + if ((err = der_length_short_integer(num, &len)) != CRYPT_OK) { + return err; + } + + if (*outlen < len) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* get len of output */ + z = 0; + y = num; + while (y) { + ++z; + y >>= 8; + } + + /* handle zero */ + if (z == 0) { + z = 1; + } + + /* see if msb is set */ + z += (num&(1UL<<((z<<3) - 1))) ? 1 : 0; + + /* adjust the number so the msB is non-zero */ + for (x = 0; (z <= 4) && (x < (4 - z)); x++) { + num <<= 8; + } + + /* store header */ + x = 0; + out[x++] = 0x02; + out[x++] = (unsigned char)z; + + /* if 31st bit is set output a leading zero and decrement count */ + if (z == 5) { + out[x++] = 0; + --z; + } + + /* store values */ + for (y = 0; y < z; y++) { + out[x++] = (unsigned char)((num >> 24) & 0xFF); + num <<= 8; + } + + /* we good */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_encode_short_integer.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_length_short_integer.c b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_length_short_integer.c new file mode 100644 index 0000000..ec3f8f1 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/short_integer/der_length_short_integer.c @@ -0,0 +1,70 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_short_integer.c + ASN.1 DER, get length of encoding, Tom St Denis +*/ + + +#ifdef LTC_DER +/** + Gets length of DER encoding of num + @param num The integer to get the size of + @param outlen [out] The length of the DER encoding for the given integer + @return CRYPT_OK if successful +*/ +int der_length_short_integer(unsigned long num, unsigned long *outlen) +{ + unsigned long z, y, len; + + LTC_ARGCHK(outlen != NULL); + + /* force to 32 bits */ + num &= 0xFFFFFFFFUL; + + /* get the number of bytes */ + z = 0; + y = num; + while (y) { + ++z; + y >>= 8; + } + + /* handle zero */ + if (z == 0) { + z = 1; + } + + /* we need a 0x02 to indicate it's INTEGER */ + len = 1; + + /* length byte */ + ++len; + + /* bytes in value */ + len += z; + + /* see if msb is set */ + len += (num&(1UL<<((z<<3) - 1))) ? 1 : 0; + + /* return length */ + *outlen = len; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_length_short_integer.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_decode_utctime.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_decode_utctime.c new file mode 100644 index 0000000..54fc204 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_decode_utctime.c @@ -0,0 +1,127 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_utctime.c + ASN.1 DER, decode a UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +static int char_to_int(unsigned char x) +{ + switch (x) { + case '0': return 0; + case '1': return 1; + case '2': return 2; + case '3': return 3; + case '4': return 4; + case '5': return 5; + case '6': return 6; + case '7': return 7; + case '8': return 8; + case '9': return 9; + } + return 100; +} + +#define DECODE_V(y, max) \ + y = char_to_int(buf[x])*10 + char_to_int(buf[x+1]); \ + if (y >= max) return CRYPT_INVALID_PACKET; \ + x += 2; + +/** + Decodes a UTC time structure in DER format (reads all 6 valid encoding formats) + @param in Input buffer + @param inlen Length of input buffer in octets + @param out [out] Destination of UTC time structure + @return CRYPT_OK if successful +*/ +int der_decode_utctime(const unsigned char *in, unsigned long *inlen, + ltc_utctime *out) +{ + unsigned char buf[32]; + unsigned long x; + int y; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(out != NULL); + + /* check header */ + if (*inlen < 2UL || (in[1] >= sizeof(buf)) || ((in[1] + 2UL) > *inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* decode the string */ + for (x = 0; x < in[1]; x++) { + y = der_ia5_value_decode(in[x+2]); + if (y == -1) { + return CRYPT_INVALID_PACKET; + } + buf[x] = y; + } + *inlen = 2 + x; + + + /* possible encodings are +YYMMDDhhmmZ +YYMMDDhhmm+hh'mm' +YYMMDDhhmm-hh'mm' +YYMMDDhhmmssZ +YYMMDDhhmmss+hh'mm' +YYMMDDhhmmss-hh'mm' + + So let's do a trivial decode upto [including] mm + */ + + x = 0; + DECODE_V(out->YY, 100); + DECODE_V(out->MM, 13); + DECODE_V(out->DD, 32); + DECODE_V(out->hh, 24); + DECODE_V(out->mm, 60); + + /* clear timezone and seconds info */ + out->off_dir = out->off_hh = out->off_mm = out->ss = 0; + + /* now is it Z, +, - or 0-9 */ + if (buf[x] == 'Z') { + return CRYPT_OK; + } else if (buf[x] == '+' || buf[x] == '-') { + out->off_dir = (buf[x++] == '+') ? 0 : 1; + DECODE_V(out->off_hh, 24); + DECODE_V(out->off_mm, 60); + return CRYPT_OK; + } + + /* decode seconds */ + DECODE_V(out->ss, 60); + + /* now is it Z, +, - */ + if (buf[x] == 'Z') { + return CRYPT_OK; + } else if (buf[x] == '+' || buf[x] == '-') { + out->off_dir = (buf[x++] == '+') ? 0 : 1; + DECODE_V(out->off_hh, 24); + DECODE_V(out->off_mm, 60); + return CRYPT_OK; + } else { + return CRYPT_INVALID_PACKET; + } +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_decode_utctime.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_encode_utctime.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_encode_utctime.c new file mode 100644 index 0000000..cb32dfa --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_encode_utctime.c @@ -0,0 +1,83 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_utctime.c + ASN.1 DER, encode a UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +static const char *baseten = "0123456789"; + +#define STORE_V(y) \ + out[x++] = der_ia5_char_encode(baseten[(y/10) % 10]); \ + out[x++] = der_ia5_char_encode(baseten[y % 10]); + +/** + Encodes a UTC time structure in DER format + @param utctime The UTC time structure to encode + @param out The destination of the DER encoding of the UTC time structure + @param outlen [in/out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_encode_utctime(ltc_utctime *utctime, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, tmplen; + int err; + + LTC_ARGCHK(utctime != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = der_length_utctime(utctime, &tmplen)) != CRYPT_OK) { + return err; + } + if (tmplen > *outlen) { + *outlen = tmplen; + return CRYPT_BUFFER_OVERFLOW; + } + + /* store header */ + out[0] = 0x17; + + /* store values */ + x = 2; + STORE_V(utctime->YY); + STORE_V(utctime->MM); + STORE_V(utctime->DD); + STORE_V(utctime->hh); + STORE_V(utctime->mm); + STORE_V(utctime->ss); + + if (utctime->off_mm || utctime->off_hh) { + out[x++] = der_ia5_char_encode(utctime->off_dir ? '-' : '+'); + STORE_V(utctime->off_hh); + STORE_V(utctime->off_mm); + } else { + out[x++] = der_ia5_char_encode('Z'); + } + + /* store length */ + out[1] = (unsigned char)(x - 2); + + /* all good let's return */ + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_length_utctime.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_length_utctime.c new file mode 100644 index 0000000..e5922b0 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utctime/der_length_utctime.c @@ -0,0 +1,46 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_utctime.c + ASN.1 DER, get length of UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Gets length of DER encoding of UTCTIME + @param utctime The UTC time structure to get the size of + @param outlen [out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(utctime != NULL); + + if (utctime->off_hh == 0 && utctime->off_mm == 0) { + /* we encode as YYMMDDhhmmssZ */ + *outlen = 2 + 13; + } else { + /* we encode as YYMMDDhhmmss{+|-}hh'mm' */ + *outlen = 2 + 17; + } + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_decode_utf8_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_decode_utf8_string.c new file mode 100644 index 0000000..9df7e23 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_decode_utf8_string.c @@ -0,0 +1,111 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_utf8_string.c + ASN.1 DER, encode a UTF8 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a UTF8 STRING + @param in The DER encoded UTF8 STRING + @param inlen The size of the DER UTF8 STRING + @param out [out] The array of utf8s stored (one per char) + @param outlen [in/out] The number of utf8s stored + @return CRYPT_OK if successful +*/ +int der_decode_utf8_string(const unsigned char *in, unsigned long inlen, + wchar_t *out, unsigned long *outlen) +{ + wchar_t tmp; + unsigned long x, y, z, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x0C */ + if ((in[0] & 0x1F) != 0x0C) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* proceed to decode */ + for (y = 0; x < inlen; ) { + /* get first byte */ + tmp = in[x++]; + + /* count number of bytes */ + for (z = 0; (tmp & 0x80) && (z <= 4); z++, tmp = (tmp << 1) & 0xFF); + + if (z > 4 || (x + (z - 1) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* decode, grab upper bits */ + tmp >>= z; + + /* grab remaining bytes */ + if (z > 1) { --z; } + while (z-- != 0) { + if ((in[x] & 0xC0) != 0x80) { + return CRYPT_INVALID_PACKET; + } + tmp = (tmp << 6) | ((wchar_t)in[x++] & 0x3F); + } + + if (y > *outlen) { + *outlen = y; + return CRYPT_BUFFER_OVERFLOW; + } + out[y++] = tmp; + } + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_encode_utf8_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_encode_utf8_string.c new file mode 100644 index 0000000..d1efb09 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_encode_utf8_string.c @@ -0,0 +1,105 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_utf8_string.c + ASN.1 DER, encode a UTF8 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store an UTF8 STRING + @param in The array of UTF8 to store (one per wchar_t) + @param inlen The number of UTF8 to store + @param out [out] The destination for the DER encoded UTF8 STRING + @param outlen [in/out] The max size and resulting size of the DER UTF8 STRING + @return CRYPT_OK if successful +*/ +int der_encode_utf8_string(const wchar_t *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + for (x = len = 0; x < inlen; x++) { + if (in[x] < 0 || in[x] > 0x1FFFF) { + return CRYPT_INVALID_ARG; + } + len += der_utf8_charsize(in[x]); + } + + if (len < 128) { + y = 2 + len; + } else if (len < 256) { + y = 3 + len; + } else if (len < 65536UL) { + y = 4 + len; + } else if (len < 16777216UL) { + y = 5 + len; + } else { + return CRYPT_INVALID_ARG; + } + + /* too big? */ + if (y > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x0C; + if (len < 128) { + out[x++] = (unsigned char)len; + } else if (len < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)len; + } else if (len < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((len>>8)&255); + out[x++] = (unsigned char)(len&255); + } else if (len < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((len>>16)&255); + out[x++] = (unsigned char)((len>>8)&255); + out[x++] = (unsigned char)(len&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store UTF8 */ + for (y = 0; y < inlen; y++) { + switch (der_utf8_charsize(in[y])) { + case 1: out[x++] = (unsigned char)in[y]; break; + case 2: out[x++] = 0xC0 | ((in[y] >> 6) & 0x1F); out[x++] = 0x80 | (in[y] & 0x3F); break; + case 3: out[x++] = 0xE0 | ((in[y] >> 12) & 0x0F); out[x++] = 0x80 | ((in[y] >> 6) & 0x3F); out[x++] = 0x80 | (in[y] & 0x3F); break; + case 4: out[x++] = 0xF0 | ((in[y] >> 18) & 0x07); out[x++] = 0x80 | ((in[y] >> 12) & 0x3F); out[x++] = 0x80 | ((in[y] >> 6) & 0x3F); out[x++] = 0x80 | (in[y] & 0x3F); break; + } + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utf8/der_encode_utf8_string.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_length_utf8_string.c b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_length_utf8_string.c new file mode 100644 index 0000000..920bd00 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/utf8/der_length_utf8_string.c @@ -0,0 +1,83 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_utf8_string.c + ASN.1 DER, get length of UTF8 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** Return the size in bytes of a UTF-8 character + @param c The UTF-8 character to measure + @return The size in bytes +*/ +unsigned long der_utf8_charsize(const wchar_t c) +{ + if (c <= 0x7F) { + return 1; + } else if (c <= 0x7FF) { + return 2; + } else if (c <= 0xFFFF) { + return 3; + } else { + return 4; + } +} + +/** + Gets length of DER encoding of UTF8 STRING + @param in The characters to measure the length of + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_utf8_string(const wchar_t *in, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(outlen != NULL); + + len = 0; + for (x = 0; x < noctets; x++) { + if (in[x] < 0 || in[x] > 0x10FFFF) { + return CRYPT_INVALID_ARG; + } + len += der_utf8_charsize(in[x]); + } + + if (len < 128) { + /* 0C LL DD DD DD ... */ + *outlen = 2 + len; + } else if (len < 256) { + /* 0C 81 LL DD DD DD ... */ + *outlen = 3 + len; + } else if (len < 65536UL) { + /* 0C 82 LL LL DD DD DD ... */ + *outlen = 4 + len; + } else if (len < 16777216UL) { + /* 0C 83 LL LL LL DD DD DD ... */ + *outlen = 5 + len; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utf8/der_length_utf8_string.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_decode_subject_public_key_info.c b/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_decode_subject_public_key_info.c new file mode 100644 index 0000000..8a5005f --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_decode_subject_public_key_info.c @@ -0,0 +1,112 @@ +/* + * New driver for /dev/crypto device (aka CryptoDev) + + * Copyright (c) 2010 Katholieke Universiteit Leuven + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of linux cryptodev. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include "tomcrypt.h" +#include +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a Subject Public Key structure --nmav +*/ + +#ifdef LTC_DER + +/* AlgorithmIdentifier := SEQUENCE { + * algorithm OBJECT IDENTIFIER, + * parameters ANY DEFINED BY algorithm + * } + * + * SubjectPublicKeyInfo := SEQUENCE { + * algorithm AlgorithmIdentifier, + * subjectPublicKey BIT STRING + * } + */ +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_decode_subject_public_key_info(const unsigned char *in, unsigned long inlen, + unsigned int algorithm, void* public_key, unsigned long* public_key_len, + unsigned long parameters_type, ltc_asn1_list* parameters, unsigned long parameters_len) +{ + int err, len; + oid_st oid; + unsigned char *tmpbuf; + unsigned long tmpoid[16]; + ltc_asn1_list alg_id[2]; + ltc_asn1_list subject_pubkey[2]; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != 0); + + err = pk_get_oid(algorithm, &oid); + if (err != CRYPT_OK) { + return err; + } + + /* see if the OpenSSL DER format RSA public key will work */ + tmpbuf = XCALLOC(1, MAX_RSA_SIZE*8); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + /* this includes the internal hash ID and optional params (NULL in this case) */ + LTC_SET_ASN1(alg_id, 0, LTC_ASN1_OBJECT_IDENTIFIER, tmpoid, sizeof(tmpoid)/sizeof(tmpoid[0])); + LTC_SET_ASN1(alg_id, 1, parameters_type, parameters, parameters_len); + + /* the actual format of the SSL DER key is odd, it stores a RSAPublicKey in a **BIT** string ... so we have to extract it + then proceed to convert bit to octet + */ + LTC_SET_ASN1(subject_pubkey, 0, LTC_ASN1_SEQUENCE, alg_id, 2); + LTC_SET_ASN1(subject_pubkey, 1, LTC_ASN1_BIT_STRING, tmpbuf, MAX_RSA_SIZE*8); + + err=der_decode_sequence(in, inlen, subject_pubkey, 2UL); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + len = subject_pubkey[1].size/8; + if (*public_key_len > len) { + memcpy(public_key, subject_pubkey[1].data, len); + *public_key_len = len; + } else { + *public_key_len = len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + err = CRYPT_OK; + +LBL_ERR: + + XFREE(tmpbuf); + + return err; +} + +#endif + + diff --git a/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_encode_subject_public_key_info.c b/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_encode_subject_public_key_info.c new file mode 100644 index 0000000..4c7e966 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/asn1/der/x509/der_encode_subject_public_key_info.c @@ -0,0 +1,83 @@ +/* + * New driver for /dev/crypto device (aka CryptoDev) + + * Copyright (c) 2010 Katholieke Universiteit Leuven + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of linux cryptodev. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include "tomcrypt.h" + +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a Subject Public Key structure --nmav +*/ + +#ifdef LTC_DER + +/* AlgorithmIdentifier := SEQUENCE { + * algorithm OBJECT IDENTIFIER, + * parameters ANY DEFINED BY algorithm + * } + * + * SubjectPublicKeyInfo := SEQUENCE { + * algorithm AlgorithmIdentifier, + * subjectPublicKey BIT STRING + * } + */ +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen, + unsigned int algorithm, void* public_key, unsigned long public_key_len, + unsigned long parameters_type, void* parameters, unsigned long parameters_len) +{ + int err; + ltc_asn1_list alg_id[2]; + oid_st oid; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + err = pk_get_oid(algorithm, &oid); + if (err != CRYPT_OK) { + return err; + } + + alg_id[0].data = oid.OID; + alg_id[0].size = oid.OIDlen; + alg_id[0].type = LTC_ASN1_OBJECT_IDENTIFIER; + + alg_id[1].data = parameters; + alg_id[1].size = parameters_len; + alg_id[1].type = parameters_type; + + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SEQUENCE, (unsigned long)sizeof(alg_id)/sizeof(alg_id[0]), alg_id, + LTC_ASN1_BIT_STRING, (unsigned long)(public_key_len*8), public_key, + LTC_ASN1_EOL, 0UL, NULL); + +} + +#endif + + diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_export.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_export.c new file mode 100644 index 0000000..f2cd714 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_export.c @@ -0,0 +1,99 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file dsa_export.c + DSA implementation, export key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Export a DSA key to a binary packet + @param out [out] Where to store the packet + @param outlen [in/out] The max size and resulting size of the packet + @param type The type of key to export (PK_PRIVATE or PK_PUBLIC) + @param key The key to export + @return CRYPT_OK if successful +*/ +int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key) +{ + unsigned long zero=0; + int err; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* can we store the static header? */ + if (type == PK_PRIVATE && key->type != PK_PRIVATE) { + return CRYPT_PK_TYPE_MISMATCH; + } + + if (type != PK_PUBLIC && type != PK_PRIVATE) { + return CRYPT_INVALID_ARG; + } + + /* This encoding is different from the one in original + * libtomcrypt. It uses a compatible encoding with gnutls + * and openssl + */ + if (type == PK_PRIVATE) { + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, &key->p, + LTC_ASN1_INTEGER, 1UL, &key->q, + LTC_ASN1_INTEGER, 1UL, &key->g, + LTC_ASN1_INTEGER, 1UL, &key->y, + LTC_ASN1_INTEGER, 1UL, &key->x, + LTC_ASN1_EOL, 0UL, NULL); + } else { + unsigned long tmplen = (mp_count_bits(&key->y)/8)+8; + unsigned char* tmp = XMALLOC(tmplen); + ltc_asn1_list int_list[3]; + + if (tmp == NULL) { + return CRYPT_MEM; + } + + err = der_encode_integer(&key->y, tmp, &tmplen); + if (err != CRYPT_OK) { + goto error; + } + + int_list[0].data = &key->p; + int_list[0].size = 1UL; + int_list[0].type = LTC_ASN1_INTEGER; + int_list[1].data = &key->q; + int_list[1].size = 1UL; + int_list[1].type = LTC_ASN1_INTEGER; + int_list[2].data = &key->g; + int_list[2].size = 1UL; + int_list[2].type = LTC_ASN1_INTEGER; + + err = der_encode_subject_public_key_info(out, outlen, + PKA_DSA, tmp, tmplen, + LTC_ASN1_SEQUENCE, int_list, sizeof(int_list)/sizeof(int_list[0])); + +error: + XFREE(tmp); + return err; + } +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_export.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_free.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_free.c new file mode 100644 index 0000000..37a330d --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_free.c @@ -0,0 +1,34 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_free.c + DSA implementation, free a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Free a DSA key + @param key The key to free from memory +*/ +void dsa_free(dsa_key *key) +{ + LTC_ARGCHKVD(key != NULL); + mp_clear_multi(&key->g, &key->q, &key->p, &key->x, &key->y, NULL); +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_free.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_import.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_import.c new file mode 100644 index 0000000..99001f2 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_import.c @@ -0,0 +1,101 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file dsa_import.c + DSA implementation, import a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Import a DSA key + @param in The binary packet to import from + @param inlen The length of the binary packet + @param key [out] Where to store the imported key + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +int dsa_import(const unsigned char *in, unsigned long inlen, dsa_key *key) +{ + int err; + unsigned long zero = 0; + unsigned char* tmpbuf = NULL; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + + /* init key */ + if (mp_init_multi(&key->p, &key->g, &key->q, &key->x, &key->y, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* get key type */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, &key->p, + LTC_ASN1_INTEGER, 1UL, &key->q, + LTC_ASN1_INTEGER, 1UL, &key->g, + LTC_ASN1_INTEGER, 1UL, &key->y, + LTC_ASN1_INTEGER, 1UL, &key->x, + LTC_ASN1_EOL, 0UL, NULL)) == CRYPT_OK) { + key->type = PK_PRIVATE; + } else { /* public */ + ltc_asn1_list params[3]; + unsigned long tmpbuf_len = MAX_RSA_SIZE*8; + + LTC_SET_ASN1(params, 0, LTC_ASN1_INTEGER, &key->p, 1UL); + LTC_SET_ASN1(params, 1, LTC_ASN1_INTEGER, &key->q, 1UL); + LTC_SET_ASN1(params, 2, LTC_ASN1_INTEGER, &key->g, 1UL); + + tmpbuf = XCALLOC(1, tmpbuf_len); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + err = der_decode_subject_public_key_info(in, inlen, + PKA_DSA, tmpbuf, &tmpbuf_len, + LTC_ASN1_SEQUENCE, params, 3); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + if ((err=der_decode_integer(tmpbuf, tmpbuf_len, &key->y)) != CRYPT_OK) { + goto LBL_ERR; + } + + XFREE(tmpbuf); + key->type = PK_PUBLIC; + } + + key->qord = mp_unsigned_bin_size(&key->q); + + if (key->qord >= LTC_MDSA_MAX_GROUP || key->qord <= 15 || + (unsigned long)key->qord >= mp_unsigned_bin_size(&key->p) || (mp_unsigned_bin_size(&key->p) - key->qord) >= LTC_MDSA_DELTA) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + return CRYPT_OK; + +LBL_ERR: + XFREE(tmpbuf); + mp_clear_multi(&key->p, &key->g, &key->q, &key->x, &key->y, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_import.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_make_key.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_make_key.c new file mode 100644 index 0000000..1831853 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_make_key.c @@ -0,0 +1,125 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file dsa_make_key.c + DSA implementation, generate a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Create a DSA key + @param group_size Size of the multiplicative group (octets) + @param modulus_size Size of the modulus (octets) + @param key [out] Where to store the created key + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +int dsa_make_key(int group_size, int modulus_size, dsa_key *key) +{ + mp_int tmp, tmp2; + int err, res; + unsigned char *buf; + + LTC_ARGCHK(key != NULL); + + /* check size */ + if (group_size >= LTC_MDSA_MAX_GROUP || group_size <= 15 || + group_size >= modulus_size || (modulus_size - group_size) >= LTC_MDSA_DELTA) { + return CRYPT_INVALID_ARG; + } + + /* allocate ram */ + buf = XMALLOC(LTC_MDSA_DELTA); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* init mp_ints */ + if ((err = mp_init_multi(&tmp, &tmp2, &key->g, &key->q, &key->p, &key->x, &key->y, NULL)) != CRYPT_OK) { + XFREE(buf); + return err; + } + + /* make our prime q */ + if ((err = rand_prime(&key->q, group_size)) != CRYPT_OK) { goto error; } + + /* double q */ + if ((err = mp_add(&key->q, &key->q, &tmp)) != CRYPT_OK) { goto error; } + + /* now make a random string and multply it against q */ + get_random_bytes(buf+1, modulus_size - group_size); + + /* force magnitude */ + buf[0] |= 0xC0; + + /* force even */ + buf[modulus_size - group_size - 1] &= ~1; + + if ((err = mp_read_unsigned_bin(&tmp2, buf, modulus_size - group_size)) != CRYPT_OK) { goto error; } + if ((err = mp_mul(&key->q, &tmp2, &key->p)) != CRYPT_OK) { goto error; } + if ((err = mp_add_d(&key->p, 1, &key->p)) != CRYPT_OK) { goto error; } + + /* now loop until p is prime */ + for (;;) { + if ((err = mp_prime_is_prime(&key->p, 8, &res)) != CRYPT_OK) { goto error; } + if (res == LTC_MP_YES) break; + + /* add 2q to p and 2 to tmp2 */ + if ((err = mp_add(&tmp, &key->p, &key->p)) != CRYPT_OK) { goto error; } + if ((err = mp_add_d(&tmp2, 2, &tmp2)) != CRYPT_OK) { goto error; } + } + + /* now p = (q * tmp2) + 1 is prime, find a value g for which g^tmp2 != 1 */ + mp_set(&key->g, 1); + + do { + if ((err = mp_add_d(&key->g, 1, &key->g)) != CRYPT_OK) { goto error; } + if ((err = mp_exptmod(&key->g, &tmp2, &key->p, &tmp)) != CRYPT_OK) { goto error; } + } while (mp_cmp_d(&tmp, 1) == LTC_MP_EQ); + + /* at this point tmp generates a group of order q mod p */ + mp_exch(&tmp, &key->g); + + /* so now we have our DH structure, generator g, order q, modulus p + Now we need a random exponent [mod q] and it's power g^x mod p + */ + do { + get_random_bytes(buf, group_size); + + if ((err = mp_read_unsigned_bin(&key->x, buf, group_size)) != CRYPT_OK) { goto error; } + } while (mp_cmp_d(&key->x, 1) != LTC_MP_GT); + if ((err = mp_exptmod(&key->g, &key->x, &key->p, &key->y)) != CRYPT_OK) { goto error; } + + key->type = PK_PRIVATE; + key->qord = group_size; + +#ifdef LTC_CLEAN_STACK + zeromem(buf, LTC_MDSA_DELTA); +#endif + + err = CRYPT_OK; + goto done; +error: + mp_clear_multi(&key->g, &key->q, &key->p, &key->x, &key->y, NULL); +done: + mp_clear_multi(&tmp, &tmp2, NULL); + XFREE(buf); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_make_key.c,v $ */ +/* $Revision: 1.12 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_sign_hash.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_sign_hash.c new file mode 100644 index 0000000..b48d5a5 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_sign_hash.c @@ -0,0 +1,147 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file dsa_sign_hash.c + DSA implementation, sign a hash, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Sign a hash with DSA + @param in The hash to sign + @param inlen The length of the hash to sign + @param r The "r" integer of the signature (caller must initialize with mp_init() first) + @param s The "s" integer of the signature (caller must initialize with mp_init() first) + @param key A private DSA key + @return CRYPT_OK if successful +*/ +int dsa_sign_hash_raw(const unsigned char *in, unsigned long inlen, + mp_int_t r, mp_int_t s, + dsa_key *key) +{ + mp_int k, kinv, tmp; + unsigned char *buf; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(key != NULL); + + if (key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* check group order size */ + if (key->qord >= LTC_MDSA_MAX_GROUP) { + return CRYPT_INVALID_ARG; + } + + buf = XMALLOC(LTC_MDSA_MAX_GROUP); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* Init our temps */ + if ((err = mp_init_multi(&k, &kinv, &tmp, NULL)) != CRYPT_OK) { goto ERRBUF; } + +retry: + + do { + /* gen random k */ + get_random_bytes(buf, key->qord); + + /* read k */ + if ((err = mp_read_unsigned_bin(&k, buf, key->qord)) != CRYPT_OK) { goto error; } + + /* k > 1 ? */ + if (mp_cmp_d(&k, 1) != LTC_MP_GT) { goto retry; } + + /* test gcd */ + if ((err = mp_gcd(&k, &key->q, &tmp)) != CRYPT_OK) { goto error; } + } while (mp_cmp_d(&tmp, 1) != LTC_MP_EQ); + + /* now find 1/k mod q */ + if ((err = mp_invmod(&k, &key->q, &kinv)) != CRYPT_OK) { goto error; } + + /* now find r = g^k mod p mod q */ + if ((err = mp_exptmod(&key->g, &k, &key->p, r)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(r, &key->q, r)) != CRYPT_OK) { goto error; } + + if (mp_iszero(r) == LTC_MP_YES) { goto retry; } + + /* now find s = (in + xr)/k mod q */ + if ((err = mp_read_unsigned_bin(&tmp, (unsigned char *)in, inlen)) != CRYPT_OK) { goto error; } + if ((err = mp_mul(&key->x, r, s)) != CRYPT_OK) { goto error; } + if ((err = mp_add(s, &tmp, s)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(s, &kinv, &key->q, s)) != CRYPT_OK) { goto error; } + + if (mp_iszero(s) == LTC_MP_YES) { goto retry; } + + err = CRYPT_OK; +error: + mp_clear_multi(&k, &kinv, &tmp, NULL); +ERRBUF: +#ifdef LTC_CLEAN_STACK + zeromem(buf, LTC_MDSA_MAX_GROUP); +#endif + XFREE(buf); + return err; +} + +/** + Sign a hash with DSA + @param in The hash to sign + @param inlen The length of the hash to sign + @param out [out] Where to store the signature + @param outlen [in/out] The max size and resulting size of the signature + @param key A private DSA key + @return CRYPT_OK if successful +*/ +int dsa_sign_hash(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + dsa_key *key) +{ + mp_int r, s; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + if (mp_init_multi(&r, &s, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + if ((err = dsa_sign_hash_raw(in, inlen, &r, &s, key)) != CRYPT_OK) { + goto error; + } + + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_INTEGER, 1UL, &r, + LTC_ASN1_INTEGER, 1UL, &s, + LTC_ASN1_EOL, 0UL, NULL); + +error: + mp_clear_multi(&r, &s, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_sign_hash.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_hash.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_hash.c new file mode 100644 index 0000000..3a82d1b --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_hash.c @@ -0,0 +1,126 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_verify_hash.c + DSA implementation, verify a signature, Tom St Denis +*/ + + +#ifdef LTC_MDSA + +/** + Verify a DSA signature + @param r DSA "r" parameter + @param s DSA "s" parameter + @param hash The hash that was signed + @param hashlen The length of the hash that was signed + @param stat [out] The result of the signature verification, 1==valid, 0==invalid + @param key The corresponding public DH key + @return CRYPT_OK if successful (even if the signature is invalid) +*/ +int dsa_verify_hash_raw( mp_int_t r, mp_int_t s, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key) +{ + mp_int w, v, u1, u2; + int err; + + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* default to invalid signature */ + *stat = 0; + + /* init our variables */ + if ((err = mp_init_multi(&w, &v, &u1, &u2, NULL)) != CRYPT_OK) { + return err; + } + + /* neither r or s can be null or >q*/ + if (mp_iszero(r) == LTC_MP_YES || mp_iszero(s) == LTC_MP_YES || mp_cmp(r, &key->q) != LTC_MP_LT || mp_cmp(s, &key->q) != LTC_MP_LT) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* w = 1/s mod q */ + if ((err = mp_invmod(s, &key->q, &w)) != CRYPT_OK) { goto error; } + + /* u1 = m * w mod q */ + if ((err = mp_read_unsigned_bin(&u1, (unsigned char *)hash, hashlen)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(&u1, &w, &key->q, &u1)) != CRYPT_OK) { goto error; } + + /* u2 = r*w mod q */ + if ((err = mp_mulmod(r, &w, &key->q, &u2)) != CRYPT_OK) { goto error; } + + /* v = g^u1 * y^u2 mod p mod q */ + if ((err = mp_exptmod(&key->g, &u1, &key->p, &u1)) != CRYPT_OK) { goto error; } + if ((err = mp_exptmod(&key->y, &u2, &key->p, &u2)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(&u1, &u2, &key->p, &v)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(&v, &key->q, &v)) != CRYPT_OK) { goto error; } + + /* if r = v then we're set */ + if (mp_cmp(r, &v) == LTC_MP_EQ) { + *stat = 1; + } + + err = CRYPT_OK; +error: + mp_clear_multi(&w, &v, &u1, &u2, NULL); + return err; +} + +/** + Verify a DSA signature + @param sig The signature + @param siglen The length of the signature (octets) + @param hash The hash that was signed + @param hashlen The length of the hash that was signed + @param stat [out] The result of the signature verification, 1==valid, 0==invalid + @param key The corresponding public DH key + @return CRYPT_OK if successful (even if the signature is invalid) +*/ +int dsa_verify_hash(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key) +{ + int err; + mp_int r, s; + + if ((err = mp_init_multi(&r, &s, NULL)) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* decode the sequence */ + if ((err = der_decode_sequence_multi(sig, siglen, + LTC_ASN1_INTEGER, 1UL, &r, + LTC_ASN1_INTEGER, 1UL, &s, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* do the op */ + err = dsa_verify_hash_raw(&r, &s, hash, hashlen, stat, key); + +LBL_ERR: + mp_clear_multi(&r, &s, NULL); + return err; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_verify_hash.c,v $ */ +/* $Revision: 1.15 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_key.c b/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_key.c new file mode 100644 index 0000000..71635d2 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/dsa/dsa_verify_key.c @@ -0,0 +1,100 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_verify_key.c + DSA implementation, verify a key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Verify a DSA key for validity + @param key The key to verify + @param stat [out] Result of test, 1==valid, 0==invalid + @return CRYPT_OK if successful +*/ +int dsa_verify_key(dsa_key *key, int *stat) +{ + mp_int tmp, tmp2; + int res, err; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(stat != NULL); + + /* default to an invalid key */ + *stat = 0; + + /* first make sure key->q and key->p are prime */ + if ((err = mp_prime_is_prime(&key->q, 8, &res)) != CRYPT_OK) { + return err; + } + if (res == 0) { + return CRYPT_OK; + } + + if ((err = mp_prime_is_prime(&key->p, 8, &res)) != CRYPT_OK) { + return err; + } + if (res == 0) { + return CRYPT_OK; + } + + /* now make sure that g is not -1, 0 or 1 and

g, 0) == LTC_MP_EQ || mp_cmp_d(&key->g, 1) == LTC_MP_EQ) { + return CRYPT_OK; + } + if ((err = mp_init_multi(&tmp, &tmp2, NULL)) != CRYPT_OK) { return err; } + if ((err = mp_sub_d(&key->p, 1, &tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp(&tmp, &key->g) == LTC_MP_EQ || mp_cmp(&key->g, &key->p) != LTC_MP_LT) { + err = CRYPT_OK; + goto error; + } + + /* 1 < y < p-1 */ + if (!(mp_cmp_d(&key->y, 1) == LTC_MP_GT && mp_cmp(&key->y, &tmp) == LTC_MP_LT)) { + err = CRYPT_OK; + goto error; + } + + /* now we have to make sure that g^q = 1, and that p-1/q gives 0 remainder */ + if ((err = mp_div(&tmp, &key->q, &tmp, &tmp2)) != CRYPT_OK) { goto error; } + if (mp_iszero(&tmp2) != LTC_MP_YES) { + err = CRYPT_OK; + goto error; + } + + if ((err = mp_exptmod(&key->g, &key->q, &key->p, &tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp_d(&tmp, 1) != LTC_MP_EQ) { + err = CRYPT_OK; + goto error; + } + + /* now we have to make sure that y^q = 1, this makes sure y \in g^x mod p */ + if ((err = mp_exptmod(&key->y, &key->q, &key->p, &tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp_d(&tmp, 1) != LTC_MP_EQ) { + err = CRYPT_OK; + goto error; + } + + /* at this point we are out of tests ;-( */ + err = CRYPT_OK; + *stat = 1; +error: + mp_clear_multi(&tmp, &tmp2, NULL); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_verify_key.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_i2osp.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_i2osp.c new file mode 100644 index 0000000..70294a5 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_i2osp.c @@ -0,0 +1,51 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_i2osp.c + Integer to Octet I2OSP, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/* always stores the same # of bytes, pads with leading zero bytes + as required + */ + +/** + LTC_PKCS #1 Integer to binary + @param n The integer to store + @param modulus_len The length of the RSA modulus + @param out [out] The destination for the integer + @return CRYPT_OK if successful +*/ +int pkcs_1_i2osp(void *n, unsigned long modulus_len, unsigned char *out) +{ + unsigned long size; + + size = mp_unsigned_bin_size(n); + + if (size > modulus_len) { + return CRYPT_BUFFER_OVERFLOW; + } + + /* store it */ + zeromem(out, modulus_len); + return mp_to_unsigned_bin(n, out+(modulus_len-size)); +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_mgf1.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_mgf1.c new file mode 100644 index 0000000..86ba218 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_mgf1.c @@ -0,0 +1,91 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file pkcs_1_mgf1.c + The Mask Generation Function (MGF1) for LTC_PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + Perform LTC_PKCS #1 MGF1 (internal) + @param seed The seed for MGF1 + @param seedlen The length of the seed + @param hash The desired hash + @param mask [out] The destination + @param masklen The length of the mask desired + @return CRYPT_OK if successful +*/ +int pkcs_1_mgf1(const struct algo_properties_st *hash, + const unsigned char *seed, unsigned long seedlen, + unsigned char *mask, unsigned long masklen) +{ + unsigned long hLen, x; + ulong32 counter; + int err; + unsigned char *buf; + + LTC_ARGCHK(seed != NULL); + LTC_ARGCHK(mask != NULL); + + /* ensure valid hash */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + /* get hash output size */ + hLen = hash->digest_size; + + /* allocate memory */ + buf = XMALLOC(hLen); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* start counter */ + counter = 0; + + while (masklen > 0) { + /* handle counter */ + STORE32H(counter, buf); + ++counter; + + err = hash_memory_multi(hash, buf, &hLen, seed, seedlen, buf, (unsigned long) 4, NULL, 0); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + /* store it */ + for (x = 0; x < hLen && masklen > 0; x++, masklen--) { + *mask++ = buf[x]; + } + } + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(buf, hLen); +#endif + + XFREE(buf); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_mgf1.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_decode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_decode.c new file mode 100644 index 0000000..717d99d --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_decode.c @@ -0,0 +1,192 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file pkcs_1_oaep_decode.c + OAEP Padding for LTC_PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + LTC_PKCS #1 v2.00 OAEP decode + @param msg The encoded data to decode + @param msglen The length of the encoded data (octets) + @param lparam The session or system data (can be NULL) + @param lparamlen The length of the lparam + @param modulus_bitlen The bit length of the RSA modulus + @param hash The desired hash + @param out [out] Destination of decoding + @param outlen [in/out] The max size and resulting size of the decoding + @param res [out] Result of decoding, 1==valid, 0==invalid + @return CRYPT_OK if successful (even if invalid) +*/ +int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, const struct algo_properties_st *hash, + unsigned char *out, unsigned long *outlen, + int *res) +{ + unsigned char *DB, *seed, *mask; + unsigned long hLen, x, y, modulus_len; + int err; + + LTC_ARGCHK(msg != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(res != NULL); + + /* default to invalid packet */ + *res = 0; + + /* test valid hash */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + hLen = hash->digest_size; + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test hash/message size */ + if ((2*hLen >= (modulus_len - 2)) || (msglen != modulus_len)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + seed = XMALLOC(hLen); + if (DB == NULL || mask == NULL || seed == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (seed != NULL) { + XFREE(seed); + } + return CRYPT_MEM; + } + + /* ok so it's now in the form + + 0x00 || maskedseed || maskedDB + + 1 || hLen || modulus_len - hLen - 1 + + */ + + /* must have leading 0x00 byte */ + if (msg[0] != 0x00) { + err = CRYPT_OK; + goto LBL_ERR; + } + + /* now read the masked seed */ + x = 1; + XMEMCPY(seed, msg + x, hLen); + x += hLen; + + /* now read the masked DB */ + XMEMCPY(DB, msg + x, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + /* compute MGF1 of maskedDB (hLen) */ + if ((err = pkcs_1_mgf1(hash, DB, modulus_len - hLen - 1, mask, hLen)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* XOR against seed */ + for (y = 0; y < hLen; y++) { + seed[y] ^= mask[y]; + } + + /* compute MGF1 of seed (k - hlen - 1) */ + if ((err = pkcs_1_mgf1(hash, seed, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* now DB == lhash || PS || 0x01 || M, PS == k - mlen - 2hlen - 2 zeroes */ + + /* compute lhash and store it in seed [reuse temps!] */ + x = modulus_len; + if (lparam != NULL) { + if ((err = hash_memory(hash, lparam, lparamlen, seed, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } else { + /* can't pass hash_memory a NULL so use DB with zero length */ + if ((err = hash_memory(hash, DB, 0, seed, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } + + /* compare the lhash'es */ + if (XMEMCMP(seed, DB, hLen) != 0) { + err = CRYPT_OK; + goto LBL_ERR; + } + + /* now zeroes before a 0x01 */ + for (x = hLen; x < (modulus_len - hLen - 1) && DB[x] == 0x00; x++) { + /* step... */ + } + + /* error out if wasn't 0x01 */ + if (x == (modulus_len - hLen - 1) || DB[x] != 0x01) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* rest is the message (and skip 0x01) */ + if ((modulus_len - hLen - 1 - ++x) > *outlen) { + *outlen = modulus_len - hLen - 1 - x; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* copy message */ + *outlen = modulus_len - hLen - 1 - x; + XMEMCPY(out, DB + x, modulus_len - hLen - 1 - x); + x += modulus_len - hLen - 1; + + /* valid packet */ + *res = 1; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(seed, hLen); + zeromem(mask, modulus_len); +#endif + + XFREE(seed); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_encode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_encode.c new file mode 100644 index 0000000..331516f --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_oaep_encode.c @@ -0,0 +1,164 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file pkcs_1_oaep_encode.c + OAEP Padding for LTC_PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + LTC_PKCS #1 v2.00 OAEP encode + @param msg The data to encode + @param msglen The length of the data to encode (octets) + @param lparam A session or system parameter (can be NULL) + @param lparamlen The length of the lparam data + @param modulus_bitlen The bit length of the RSA modulus + @param hash The desired hash + @param out [out] The destination for the encoded data + @param outlen [in/out] The max size and resulting size of the encoded data + @return CRYPT_OK if successful +*/ +int pkcs_1_oaep_encode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, const struct algo_properties_st *hash, + unsigned char *out, unsigned long *outlen) +{ + unsigned char *DB, *seed, *mask; + unsigned long hLen, x, y, modulus_len; + int err; + + LTC_ARGCHK(msg != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* test valid hash */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + hLen = hash->digest_size; + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + if ((2*hLen >= (modulus_len - 2)) || (msglen > (modulus_len - 2*hLen - 2))) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + seed = XMALLOC(hLen); + if (DB == NULL || mask == NULL || seed == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (seed != NULL) { + XFREE(seed); + } + return CRYPT_MEM; + } + + /* get lhash */ + /* DB == lhash || PS || 0x01 || M, PS == k - mlen - 2hlen - 2 zeroes */ + x = modulus_len; + if (lparam != NULL) { + if ((err = hash_memory(hash, lparam, lparamlen, DB, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } else { + /* can't pass hash_memory a NULL so use DB with zero length */ + if ((err = hash_memory(hash, DB, 0, DB, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } + + /* append PS then 0x01 (to lhash) */ + x = hLen; + y = modulus_len - msglen - 2*hLen - 2; + XMEMSET(DB+x, 0, y); + x += y; + + /* 0x01 byte */ + DB[x++] = 0x01; + + /* message (length = msglen) */ + XMEMCPY(DB+x, msg, msglen); + x += msglen; + + /* now choose a random seed */ + get_random_bytes(seed, hLen); + + /* compute MGF1 of seed (k - hlen - 1) */ + if ((err = pkcs_1_mgf1(hash, seed, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* compute MGF1 of maskedDB (hLen) */ + if ((err = pkcs_1_mgf1(hash, DB, modulus_len - hLen - 1, mask, hLen)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* XOR against seed */ + for (y = 0; y < hLen; y++) { + seed[y] ^= mask[y]; + } + + /* create string of length modulus_len */ + if (*outlen < modulus_len) { + *outlen = modulus_len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* start output which is 0x00 || maskedSeed || maskedDB */ + x = 0; + out[x++] = 0x00; + XMEMCPY(out+x, seed, hLen); + x += hLen; + XMEMCPY(out+x, DB, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + *outlen = x; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(seed, hLen); + zeromem(mask, modulus_len); +#endif + + XFREE(seed); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_encode.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_os2ip.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_os2ip.c new file mode 100644 index 0000000..513abb6 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_os2ip.c @@ -0,0 +1,36 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_os2ip.c + Octet to Integer OS2IP, Tom St Denis +*/ +#ifdef LTC_PKCS_1 + +/** + Read a binary string into an mp_int + @param n [out] The mp_int destination + @param in The binary string to read + @param inlen The length of the binary string + @return CRYPT_OK if successful +*/ +int pkcs_1_os2ip(void *n, unsigned char *in, unsigned long inlen) +{ + return mp_read_unsigned_bin(n, in, inlen); +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_decode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_decode.c new file mode 100644 index 0000000..5d44ce8 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_decode.c @@ -0,0 +1,168 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file pkcs_1_pss_decode.c + LTC_PKCS #1 PSS Signature Padding, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + LTC_PKCS #1 v2.00 PSS decode + @param msghash The hash to verify + @param msghashlen The length of the hash (octets) + @param sig The signature data (encoded data) + @param siglen The length of the signature data (octets) + @param saltlen The length of the salt used (octets) + @param hash_algo The desired hash + @param modulus_bitlen The bit length of the RSA modulus + @param res [out] The result of the comparison, 1==valid, 0==invalid + @return CRYPT_OK if successful (even if the comparison failed) +*/ +int pkcs_1_pss_decode(const unsigned char *msghash, unsigned long msghashlen, + const unsigned char *sig, unsigned long siglen, + unsigned long saltlen, const struct algo_properties_st *hash_algo, + unsigned long modulus_bitlen, int *res) +{ + unsigned char *DB, *mask, *salt, *hash; + unsigned long x, y, hLen, modulus_len; + int err; + + LTC_ARGCHK(msghash != NULL); + LTC_ARGCHK(res != NULL); + + /* default to invalid */ + *res = 0; + + /* ensure hash is valid */ + if ((err = hash_is_valid(hash_algo)) != CRYPT_OK) { + return err; + } + + hLen = hash_algo->digest_size; + modulus_len = (modulus_bitlen>>3) + (modulus_bitlen & 7 ? 1 : 0); + + /* check sizes */ + if ((saltlen > modulus_len) || + (modulus_len < hLen + saltlen + 2) || (siglen != modulus_len)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt/hash of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + salt = XMALLOC(modulus_len); + hash = XMALLOC(modulus_len); + if (DB == NULL || mask == NULL || salt == NULL || hash == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (salt != NULL) { + XFREE(salt); + } + if (hash != NULL) { + XFREE(hash); + } + return CRYPT_MEM; + } + + /* ensure the 0xBC byte */ + if (sig[siglen-1] != 0xBC) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* copy out the DB */ + x = 0; + XMEMCPY(DB, sig + x, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + /* copy out the hash */ + XMEMCPY(hash, sig + x, hLen); + x += hLen; + + /* check the MSB */ + if ((sig[0] & ~(0xFF >> ((modulus_len<<3) - (modulus_bitlen-1)))) != 0) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* generate mask of length modulus_len - hLen - 1 from hash */ + if ((err = pkcs_1_mgf1(hash_algo, hash, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* now clear the first byte [make sure smaller than modulus] */ + DB[0] &= 0xFF >> ((modulus_len<<3) - (modulus_bitlen-1)); + + /* DB = PS || 0x01 || salt, PS == modulus_len - saltlen - hLen - 2 zero bytes */ + + /* check for zeroes and 0x01 */ + for (x = 0; x < modulus_len - saltlen - hLen - 2; x++) { + if (DB[x] != 0x00) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + } + + /* check for the 0x01 */ + if (DB[x++] != 0x01) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + zeromem(mask, 8); + + /* M = (eight) 0x00 || msghash || salt, mask = H(M) */ + err = hash_memory_multi(hash_algo, mask, &hLen, mask, (unsigned long)8, msghash, (unsigned long)msghashlen, DB+x, (unsigned long)saltlen, NULL, 0); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + /* mask == hash means valid signature */ + if (XMEMCMP(mask, hash, hLen) == 0) { + *res = 1; + } + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(mask, modulus_len); + zeromem(salt, modulus_len); + zeromem(hash, modulus_len); +#endif + + XFREE(hash); + XFREE(salt); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_decode.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_encode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_encode.c new file mode 100644 index 0000000..9416eae --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_pss_encode.c @@ -0,0 +1,157 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include + +/** + @file pkcs_1_pss_encode.c + LTC_PKCS #1 PSS Signature Padding, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + LTC_PKCS #1 v2.00 Signature Encoding + @param msghash The hash to encode + @param msghashlen The length of the hash (octets) + @param saltlen The length of the salt desired (octets) + @param hash_algo The desired hash + @param modulus_bitlen The bit length of the RSA modulus + @param out [out] The destination of the encoding + @param outlen [in/out] The max size and resulting size of the encoded data + @return CRYPT_OK if successful +*/ +int pkcs_1_pss_encode(const unsigned char *msghash, unsigned long msghashlen, + unsigned long saltlen, const struct algo_properties_st *hash_algo, + unsigned long modulus_bitlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned char *DB, *mask, *salt, *hash; + unsigned long x, y, hLen, modulus_len; + int err; + + LTC_ARGCHK(msghash != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* ensure hash and PRNG are valid */ + if ((err = hash_is_valid(hash_algo)) != CRYPT_OK) { + return err; + } + + hLen = hash_algo->digest_size; + modulus_len = (modulus_bitlen>>3) + (modulus_bitlen & 7 ? 1 : 0); + + /* check sizes */ + if ((saltlen > modulus_len) || (modulus_len < hLen + saltlen + 2)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt/hash of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + salt = XMALLOC(modulus_len); + hash = XMALLOC(modulus_len); + if (DB == NULL || mask == NULL || salt == NULL || hash == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (salt != NULL) { + XFREE(salt); + } + if (hash != NULL) { + XFREE(hash); + } + return CRYPT_MEM; + } + + + /* generate random salt */ + if (saltlen > 0) { + get_random_bytes(salt, saltlen); + } + + zeromem(DB, 8); + + /* M = (eight) 0x00 || msghash || salt, hash = H(M) */ + err = hash_memory_multi(hash_algo, hash, &hLen, DB, (unsigned long)8, msghash, (unsigned long)msghashlen, salt, (unsigned long)saltlen, NULL, 0); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + /* generate DB = PS || 0x01 || salt, PS == modulus_len - saltlen - hLen - 2 zero bytes */ + x = 0; + XMEMSET(DB + x, 0, modulus_len - saltlen - hLen - 2); + x += modulus_len - saltlen - hLen - 2; + DB[x++] = 0x01; + XMEMCPY(DB + x, salt, saltlen); + x += saltlen; + + /* generate mask of length modulus_len - hLen - 1 from hash */ + if ((err = pkcs_1_mgf1(hash_algo, hash, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* output is DB || hash || 0xBC */ + if (*outlen < modulus_len) { + *outlen = modulus_len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* DB len = modulus_len - hLen - 1 */ + y = 0; + XMEMCPY(out + y, DB, modulus_len - hLen - 1); + y += modulus_len - hLen - 1; + + /* hash */ + XMEMCPY(out + y, hash, hLen); + y += hLen; + + /* 0xBC */ + out[y] = 0xBC; + + /* now clear the 8*modulus_len - modulus_bitlen most significant bits */ + out[0] &= 0xFF >> ((modulus_len<<3) - (modulus_bitlen-1)); + + /* store output size */ + *outlen = modulus_len; + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(mask, modulus_len); + zeromem(salt, modulus_len); + zeromem(hash, modulus_len); +#endif + + XFREE(hash); + XFREE(salt); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_encode.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_decode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_decode.c new file mode 100644 index 0000000..1bb08e3 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_decode.c @@ -0,0 +1,110 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** @file pkcs_1_v1_5_decode.c + * + * LTC_PKCS #1 v1.5 Padding. (Andreas Lange) + */ + +#ifdef LTC_PKCS_1 + +/** @brief LTC_PKCS #1 v1.5 decode. + * + * @param msg The encoded data to decode + * @param msglen The length of the encoded data (octets) + * @param block_type Block type to use in padding (\sa ltc_pkcs_1_v1_5_blocks) + * @param modulus_bitlen The bit length of the RSA modulus + * @param out [out] Destination of decoding + * @param outlen [in/out] The max size and resulting size of the decoding + * @param is_valid [out] Boolean whether the padding was valid + * + * @return CRYPT_OK if successful (even if invalid) + */ +int pkcs_1_v1_5_decode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + unsigned char *out, + unsigned long *outlen, + int *is_valid) +{ + unsigned long modulus_len, ps_len, i; + int result; + + /* default to invalid packet */ + *is_valid = 0; + + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + + if ((msglen > modulus_len) || (modulus_len < 11)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* separate encoded message */ + + if ((msg[0] != 0x00) || (msg[1] != (unsigned char)block_type)) { + result = CRYPT_INVALID_PACKET; + goto bail; + } + + if (block_type == LTC_LTC_PKCS_1_EME) { + for (i = 2; i < modulus_len; i++) { + /* separator */ + if (msg[i] == 0x00) { break; } + } + ps_len = i++ - 2; + + if ((i >= modulus_len) || (ps_len < 8)) { + /* There was no octet with hexadecimal value 0x00 to separate ps from m, + * or the length of ps is less than 8 octets. + */ + result = CRYPT_INVALID_PACKET; + goto bail; + } + } else { + for (i = 2; i < modulus_len - 1; i++) { + if (msg[i] != 0xFF) { break; } + } + + /* separator check */ + if (msg[i] != 0) { + /* There was no octet with hexadecimal value 0x00 to separate ps from m. */ + result = CRYPT_INVALID_PACKET; + goto bail; + } + + ps_len = i - 2; + } + + if (*outlen < (msglen - (2 + ps_len + 1))) { + *outlen = msglen - (2 + ps_len + 1); + result = CRYPT_BUFFER_OVERFLOW; + goto bail; + } + + *outlen = (msglen - (2 + ps_len + 1)); + XMEMCPY(out, &msg[2 + ps_len + 1], *outlen); + + /* valid packet */ + *is_valid = 1; + result = CRYPT_OK; +bail: + return result; +} /* pkcs_1_v1_5_decode */ + +#endif /* #ifdef LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_decode.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_encode.c b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_encode.c new file mode 100644 index 0000000..048fe69 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/pkcs1/pkcs_1_v1_5_encode.c @@ -0,0 +1,95 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/*! \file pkcs_1_v1_5_encode.c + * + * LTC_PKCS #1 v1.5 Padding (Andreas Lange) + */ + +#ifdef LTC_PKCS_1 + +/*! \brief LTC_PKCS #1 v1.5 encode. + * + * \param msg The data to encode + * \param msglen The length of the data to encode (octets) + * \param block_type Block type to use in padding (\sa ltc_pkcs_1_v1_5_blocks) + * \param modulus_bitlen The bit length of the RSA modulus + * \param out [out] The destination for the encoded data + * \param outlen [in/out] The max size and resulting size of the encoded data + * + * \return CRYPT_OK if successful + */ +int pkcs_1_v1_5_encode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + unsigned char *out, + unsigned long *outlen) +{ + unsigned long modulus_len, ps_len, i; + unsigned char *ps; + int result; + + /* valid block_type? */ + if ((block_type != LTC_LTC_PKCS_1_EMSA) && + (block_type != LTC_LTC_PKCS_1_EME)) { + return CRYPT_PK_INVALID_PADDING; + } + + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + if ((msglen + 11) > modulus_len) { + return CRYPT_PK_INVALID_SIZE; + } + + if (*outlen < modulus_len) { + *outlen = modulus_len; + result = CRYPT_BUFFER_OVERFLOW; + goto bail; + } + + /* generate an octets string PS */ + ps = &out[2]; + ps_len = modulus_len - msglen - 3; + + if (block_type == LTC_LTC_PKCS_1_EME) { + /* now choose a random ps */ + get_random_bytes(ps, ps_len); + + /* transform zero bytes (if any) to non-zero random bytes */ + for (i = 0; i < ps_len; i++) { + while (ps[i] == 0) { + get_random_bytes(&ps[i], 1); + } + } + } else { + XMEMSET(ps, 0xFF, ps_len); + } + + /* create string of length modulus_len */ + out[0] = 0x00; + out[1] = (unsigned char)block_type; /* block_type 1 or 2 */ + out[2 + ps_len] = 0x00; + XMEMCPY(&out[2 + ps_len + 1], msg, msglen); + *outlen = modulus_len; + + result = CRYPT_OK; +bail: + return result; +} /* pkcs_1_v1_5_encode */ + +#endif /* #ifdef LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_encode.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_decrypt_key.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_decrypt_key.c new file mode 100644 index 0000000..ba16e32 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_decrypt_key.c @@ -0,0 +1,107 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include "ncr-int.h" +#include + +/** + @file rsa_decrypt_key.c + RSA LTC_PKCS #1 Decryption, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + LTC_PKCS #1 decrypt then v1.5 or OAEP depad + @param in The ciphertext + @param inlen The length of the ciphertext (octets) + @param out [out] The plaintext + @param outlen [in/out] The max size and resulting size of the plaintext (octets) + @param lparam The system "lparam" value + @param lparamlen The length of the lparam value (octets) + @param hash The desired hash + @param padding Type of padding (LTC_LTC_PKCS_1_OAEP or LTC_LTC_PKCS_1_V1_5) + @param stat [out] Result of the decryption, 1==valid, 0==invalid + @param key The corresponding private RSA key + @return CRYPT_OK if succcessul (even if invalid) +*/ +int rsa_decrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + const struct algo_properties_st *hash, int padding, + int *stat, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + unsigned char *tmp; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(stat != NULL); + + /* default to invalid */ + *stat = 0; + + /* valid padding? */ + + if ((padding != LTC_LTC_PKCS_1_V1_5) && + (padding != LTC_LTC_PKCS_1_OAEP)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* valid hash ? */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (&key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (&key->N)); + if (modulus_bytelen != inlen) { + return CRYPT_INVALID_PACKET; + } + + /* allocate ram */ + tmp = XMALLOC(inlen); + if (tmp == NULL) { + return CRYPT_MEM; + } + + /* rsa decode the packet */ + x = inlen; + if ((err = rsa_exptmod(in, inlen, tmp, &x, PK_PRIVATE, key)) != CRYPT_OK) { + XFREE(tmp); + return err; + } + + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* now OAEP decode the packet */ + err = pkcs_1_oaep_decode(tmp, x, lparam, lparamlen, modulus_bitlen, hash, + out, outlen, stat); + } else { + /* now LTC_PKCS #1 v1.5 depad the packet */ + err = pkcs_1_v1_5_decode(tmp, x, LTC_LTC_PKCS_1_EME, modulus_bitlen, out, outlen, stat); + } + + XFREE(tmp); + return err; +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_decrypt_key.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_encrypt_key.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_encrypt_key.c new file mode 100644 index 0000000..8d3f2db --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_encrypt_key.c @@ -0,0 +1,96 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include "ncr-int.h" + +/** + @file rsa_encrypt_key.c + RSA LTC_PKCS #1 encryption, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + (LTC_PKCS #1 v2.0) OAEP pad then encrypt + @param in The plaintext + @param inlen The length of the plaintext (octets) + @param out [out] The ciphertext + @param outlen [in/out] The max size and resulting size of the ciphertext + @param lparam The system "lparam" for the encryption + @param lparamlen The length of lparam (octets) + @param hash The desired hash + @param padding Type of padding (LTC_LTC_PKCS_1_OAEP or LTC_LTC_PKCS_1_V1_5) + @param key The RSA key to encrypt to + @return CRYPT_OK if successful +*/ +int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + const struct algo_properties_st *hash, int padding, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* valid padding? */ + if ((padding != LTC_LTC_PKCS_1_V1_5) && + (padding != LTC_LTC_PKCS_1_OAEP)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* valid hash? */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (&key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (&key->N)); + if (modulus_bytelen > *outlen) { + *outlen = modulus_bytelen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* OAEP pad the key */ + x = *outlen; + if ((err = pkcs_1_oaep_encode(in, inlen, lparam, + lparamlen, modulus_bitlen, hash, + out, &x)) != CRYPT_OK) { + return err; + } + } else { + /* LTC_PKCS #1 v1.5 pad the key */ + x = *outlen; + if ((err = pkcs_1_v1_5_encode(in, inlen, LTC_LTC_PKCS_1_EME, + modulus_bitlen, + out, &x)) != CRYPT_OK) { + return err; + } + } + + /* rsa exptmod the OAEP or LTC_PKCS #1 v1.5 pad */ + return rsa_exptmod(out, x, out, outlen, PK_PUBLIC, key); +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_encrypt_key.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_export.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_export.c new file mode 100644 index 0000000..c5e8ff0 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_export.c @@ -0,0 +1,87 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include +#include +/** + @file rsa_export.c + Export RSA LTC_PKCS keys, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + This will export either an RSAPublicKey or RSAPrivateKey [defined in LTC_PKCS #1 v2.1] + @param out [out] Destination of the packet + @param outlen [in/out] The max size and resulting size of the packet + @param type The type of exported key (PK_PRIVATE or PK_PUBLIC) + @param key The RSA key to export + @return CRYPT_OK if successful +*/ +int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key) +{ + unsigned long zero=0; + int err; + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* type valid? */ + if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) { + return CRYPT_PK_INVALID_TYPE; + } + + if (type == PK_PRIVATE) { + /* private key */ + /* output is + Version, n, e, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p + */ + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_INTEGER, 1UL, &key->e, + LTC_ASN1_INTEGER, 1UL, &key->d, + LTC_ASN1_INTEGER, 1UL, &key->p, + LTC_ASN1_INTEGER, 1UL, &key->q, + LTC_ASN1_INTEGER, 1UL, &key->dP, + LTC_ASN1_INTEGER, 1UL, &key->dQ, + LTC_ASN1_INTEGER, 1UL, &key->qP, + LTC_ASN1_EOL, 0UL, NULL); + } else { + unsigned long tmplen = (mp_count_bits(&key->N)/8)*2+8; + unsigned char* tmp = XMALLOC(tmplen); + + if (tmp == NULL) { + return CRYPT_MEM; + } + + err = der_encode_sequence_multi(tmp, &tmplen, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_INTEGER, 1UL, &key->e, + LTC_ASN1_EOL, 0UL, NULL); + if (err != CRYPT_OK) { + goto error; + } + + err = der_encode_subject_public_key_info(out, outlen, + PKA_RSA, tmp, tmplen, LTC_ASN1_NULL, NULL, 0); + +error: + XFREE(tmp); + return err; + } +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_export.c,v $ */ +/* $Revision: 1.17 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_exptmod.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_exptmod.c new file mode 100644 index 0000000..35ebfe3 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_exptmod.c @@ -0,0 +1,147 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + * + * Added RSA blinding --nmav + */ +#include "tomcrypt.h" + +/** + @file rsa_exptmod.c + RSA LTC_PKCS exptmod, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Compute an RSA modular exponentiation + @param in The input data to send into RSA + @param inlen The length of the input (octets) + @param out [out] The destination + @param outlen [in/out] The max size and resulting size of the output + @param which Which exponent to use, e.g. PK_PRIVATE or PK_PUBLIC + @param key The RSA key to use + @return CRYPT_OK if successful +*/ +int rsa_exptmod(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int which, + rsa_key *key) +{ + mp_int tmp, tmpa, tmpb, rnd, rndi /* inverse of rnd */; + unsigned long x; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* is the key of the right type for the operation? */ + if (which == PK_PRIVATE && (key->type != PK_PRIVATE)) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* must be a private or public operation */ + if (which != PK_PRIVATE && which != PK_PUBLIC) { + return CRYPT_PK_INVALID_TYPE; + } + + /* init and copy into tmp */ + if ((err = mp_init_multi(&tmp, &tmpa, &tmpb, &rnd, &rndi, NULL)) != CRYPT_OK) + { return err; } + if ((err = mp_read_unsigned_bin(&tmp, (unsigned char *)in, (int)inlen)) != CRYPT_OK) + { goto error; } + + /* sanity check on the input */ + if (mp_cmp(&key->N, &tmp) == LTC_MP_LT) { + err = CRYPT_PK_INVALID_SIZE; + goto error; + } + + /* are we using the private exponent and is the key optimized? */ + if (which == PK_PRIVATE) { + /* do blinding */ + err = mp_rand(&rnd, mp_count_bits(&key->N)); + if (err != CRYPT_OK) { + goto error; + } + + /* rndi = 1/rnd mod N */ + err = mp_invmod( &rnd, &key->N, &rndi); + if (err != CRYPT_OK) { + goto error; + } + + /* rnd = rnd^e */ + err = mp_exptmod( &rnd, &key->e, &key->N, &rnd); + if (err != CRYPT_OK) { + goto error; + } + + /* tmp = tmp*rnd mod N */ + err = mp_mulmod( &tmp, &rnd, &key->N, &tmp); + if (err != CRYPT_OK) { + goto error; + } + + /* tmpa = tmp^dP mod p */ + if ((err = mp_exptmod(&tmp, &key->dP, &key->p, &tmpa)) != CRYPT_OK) { goto error; } + + /* tmpb = tmp^dQ mod q */ + if ((err = mp_exptmod(&tmp, &key->dQ, &key->q, &tmpb)) != CRYPT_OK) { goto error; } + + /* tmp = (tmpa - tmpb) * qInv (mod p) */ + if ((err = mp_sub(&tmpa, &tmpb, &tmp)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(&tmp, &key->qP, &key->p, &tmp)) != CRYPT_OK) { goto error; } + + /* tmp = tmpb + q * tmp */ + if ((err = mp_mul(&tmp, &key->q, &tmp)) != CRYPT_OK) { goto error; } + if ((err = mp_add(&tmp, &tmpb, &tmp)) != CRYPT_OK) { goto error; } + + /* unblind */ + err = mp_mulmod( &tmp, &rndi, &key->N, &tmp); + if (err != CRYPT_OK) { + goto error; + } + } else { + /* exptmod it */ + if ((err = mp_exptmod(&tmp, &key->e, &key->N, &tmp)) != CRYPT_OK) { goto error; } + } + + /* read it back */ + x = (unsigned long)mp_unsigned_bin_size(&key->N); + if (x > *outlen) { + *outlen = x; + err = CRYPT_BUFFER_OVERFLOW; + goto error; + } + + /* this should never happen ... */ + if (mp_unsigned_bin_size(&tmp) > mp_unsigned_bin_size(&key->N)) { + err = CRYPT_ERROR; + goto error; + } + *outlen = x; + + /* convert it */ + zeromem(out, x); + if ((err = mp_to_unsigned_bin(&tmp, out+(x-mp_unsigned_bin_size(&tmp)))) != CRYPT_OK) { goto error; } + + /* clean up and return */ + err = CRYPT_OK; +error: + mp_clear_multi(&tmp, &tmpa, &tmpb, &rnd, &rndi, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_exptmod.c,v $ */ +/* $Revision: 1.18 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_free.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_free.c new file mode 100644 index 0000000..d38b266 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_free.c @@ -0,0 +1,34 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_free.c + Free an RSA key, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Free an RSA key from memory + @param key The RSA key to free +*/ +void rsa_free(rsa_key *key) +{ + LTC_ARGCHKVD(key != NULL); + mp_clear_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL); +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_free.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_import.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_import.c new file mode 100644 index 0000000..8bd8c47 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_import.c @@ -0,0 +1,128 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include + +/** + @file rsa_import.c + Import a LTC_PKCS RSA key, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Import an RSAPublicKey or RSAPrivateKey [two-prime only, only support >= 1024-bit keys, defined in LTC_PKCS #1 v2.1] + @param in The packet to import from + @param inlen It's length (octets) + @param key [out] Destination for newly imported key + @return CRYPT_OK if successful, upon error allocated memory is freed +*/ +int rsa_import(const unsigned char *in, unsigned long inlen, rsa_key *key) +{ + int err; + mp_int zero; + unsigned char *tmpbuf=NULL; + unsigned long tmpbuf_len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + + /* init key */ + if ((err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, + &key->dP, &key->qP, &key->p, &key->q, NULL)) != CRYPT_OK) { + return err; + } + + /* see if the OpenSSL DER format RSA public key will work */ + tmpbuf_len = MAX_RSA_SIZE * 8; + tmpbuf = XCALLOC(1, tmpbuf_len); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + err = der_decode_subject_public_key_info(in, inlen, + PKA_RSA, tmpbuf, &tmpbuf_len, + LTC_ASN1_NULL, NULL, 0); + + if (err == CRYPT_OK) { /* SubjectPublicKeyInfo format */ + + /* now it should be SEQUENCE { INTEGER, INTEGER } */ + if ((err = der_decode_sequence_multi(tmpbuf, tmpbuf_len, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_INTEGER, 1UL, &key->e, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + + XFREE(tmpbuf); + + key->type = PK_PUBLIC; + return CRYPT_OK; + } + + XFREE(tmpbuf); + + /* not SSL public key, try to match against LTC_PKCS #1 standards */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + + if (mp_cmp_d(&key->N, 0) == LTC_MP_EQ) { + if ((err = mp_init(&zero)) != CRYPT_OK) { + goto LBL_ERR; + } + /* it's a private key */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, zero, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_INTEGER, 1UL, &key->e, + LTC_ASN1_INTEGER, 1UL, &key->d, + LTC_ASN1_INTEGER, 1UL, &key->p, + LTC_ASN1_INTEGER, 1UL, &key->q, + LTC_ASN1_INTEGER, 1UL, &key->dP, + LTC_ASN1_INTEGER, 1UL, &key->dQ, + LTC_ASN1_INTEGER, 1UL, &key->qP, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + mp_clear(&zero); + goto LBL_ERR; + } + mp_clear(&zero); + key->type = PK_PRIVATE; + } else if (mp_cmp_d(&key->N, 1) == LTC_MP_EQ) { + /* we don't support multi-prime RSA */ + err = CRYPT_PK_INVALID_TYPE; + goto LBL_ERR; + } else { + /* it's a public key and we lack e */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, &key->N, + LTC_ASN1_INTEGER, 1UL, &key->e, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + key->type = PK_PUBLIC; + } + return CRYPT_OK; +LBL_ERR: + XFREE(tmpbuf); + mp_clear_multi(&key->d, &key->e, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL); + return err; +} + +#endif /* LTC_MRSA */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_import.c,v $ */ +/* $Revision: 1.23 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_make_key.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_make_key.c new file mode 100644 index 0000000..6718f09 --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_make_key.c @@ -0,0 +1,105 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_make_key.c + RSA key generation, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Create an RSA key + @param size The size of the modulus (key size) desired (octets) + @param e The "e" value (public key). e==65537 is a good choice + @param key [out] Destination of a newly created private key pair + @return CRYPT_OK if successful, upon error all allocated ram is freed +*/ +int rsa_make_key(int size, long e, rsa_key *key) +{ + mp_int p, q, tmp1, tmp2, tmp3; + int err; + + LTC_ARGCHK(key != NULL); + + if ((size < (MIN_RSA_SIZE/8)) || (size > (MAX_RSA_SIZE/8))) { + return CRYPT_INVALID_KEYSIZE; + } + + if ((e < 3) || ((e & 1) == 0)) { + return CRYPT_INVALID_ARG; + } + + if ((err = mp_init_multi(&p, &q, &tmp1, &tmp2, &tmp3, NULL)) != CRYPT_OK) { + return err; + } + + /* make primes p and q (optimization provided by Wayne Scott) */ + if ((err = mp_set_int(&tmp3, e)) != CRYPT_OK) { goto cleanup; } /* tmp3 = e */ + + /* make prime "p" */ + do { + if ((err = rand_prime( &p, size/2)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub_d( &p, 1, &tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = p-1 */ + if ((err = mp_gcd( &tmp1, &tmp3, &tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = gcd(p-1, e) */ + } while (mp_cmp_d( &tmp2, 1) != 0); /* while e divides p-1 */ + + /* make prime "q" */ + do { + if ((err = rand_prime( &q, size/2)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub_d( &q, 1, &tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = q-1 */ + if ((err = mp_gcd( &tmp1, &tmp3, &tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = gcd(q-1, e) */ + } while (mp_cmp_d( &tmp2, 1) != 0); /* while e divides q-1 */ + + /* tmp1 = lcm(p-1, q-1) */ + if ((err = mp_sub_d( &p, 1, &tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = p-1 */ + /* tmp1 = q-1 (previous do/while loop) */ + if ((err = mp_lcm( &tmp1, &tmp2, &tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = lcm(p-1, q-1) */ + + /* make key */ + if ((err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL)) != CRYPT_OK) { + goto cleanup; + } + + if ((err = mp_set_int( &key->e, e)) != CRYPT_OK) { goto errkey; } /* key->e = e */ + if ((err = mp_invmod( &key->e, &tmp1, &key->d)) != CRYPT_OK) { goto errkey; } /* key->d = 1/e mod lcm(p-1,q-1) */ + if ((err = mp_mul( &p, &q, &key->N)) != CRYPT_OK) { goto errkey; } /* key->N = pq */ + + /* optimize for CRT now */ + /* find d mod q-1 and d mod p-1 */ + if ((err = mp_sub_d( &p, 1, &tmp1)) != CRYPT_OK) { goto errkey; } /* tmp1 = q-1 */ + if ((err = mp_sub_d( &q, 1, &tmp2)) != CRYPT_OK) { goto errkey; } /* tmp2 = p-1 */ + if ((err = mp_mod( &key->d, &tmp1, &key->dP)) != CRYPT_OK) { goto errkey; } /* dP = d mod p-1 */ + if ((err = mp_mod( &key->d, &tmp2, &key->dQ)) != CRYPT_OK) { goto errkey; } /* dQ = d mod q-1 */ + if ((err = mp_invmod( &q, &p, &key->qP)) != CRYPT_OK) { goto errkey; } /* qP = 1/q mod p */ + + if ((err = mp_copy( &p, &key->p)) != CRYPT_OK) { goto errkey; } + if ((err = mp_copy( &q, &key->q)) != CRYPT_OK) { goto errkey; } + + /* set key type (in this case it's CRT optimized) */ + key->type = PK_PRIVATE; + + /* return ok and free temps */ + err = CRYPT_OK; + goto cleanup; +errkey: + mp_clear_multi(&key->d, &key->e, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL); +cleanup: + mp_clear_multi(&tmp3, &tmp2, &tmp1, &p, &q, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_make_key.c,v $ */ +/* $Revision: 1.16 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_sign_hash.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_sign_hash.c new file mode 100644 index 0000000..b3c2f5b --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_sign_hash.c @@ -0,0 +1,130 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include "ncr-int.h" +#include + +/** + @file rsa_sign_hash.c + RSA LTC_PKCS #1 v1.5 and v2 PSS sign hash, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + LTC_PKCS #1 pad then sign + @param in The hash to sign + @param inlen The length of the hash to sign (octets) + @param out [out] The signature + @param outlen [in/out] The max size and resulting size of the signature + @param padding Type of padding (LTC_LTC_PKCS_1_PSS or LTC_LTC_PKCS_1_V1_5) + @param hash The desired hash + @param saltlen The length of the salt desired (octets) + @param key The private RSA key to use + @return CRYPT_OK if successful +*/ +int rsa_sign_hash_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + int padding, + const struct algo_properties_st *hash, unsigned long saltlen, + rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x, y; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* valid padding? */ + if ((padding != LTC_LTC_PKCS_1_V1_5) && (padding != LTC_LTC_PKCS_1_PSS)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_LTC_PKCS_1_PSS) { + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits((&key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size((&key->N)); + if (modulus_bytelen > *outlen) { + *outlen = modulus_bytelen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (padding == LTC_LTC_PKCS_1_PSS) { + /* PSS pad the key */ + x = *outlen; + if ((err = pkcs_1_pss_encode(in, inlen, saltlen, + hash, modulus_bitlen, out, &x)) != CRYPT_OK) { + return err; + } + } else { + /* LTC_PKCS #1 v1.5 pad the hash */ + unsigned char *tmpin; + ltc_asn1_list digestinfo[2], siginfo[2]; + oid_st st; + + /* not all hashes have OIDs... so sad */ + if (hash_get_oid(hash, &st) != CRYPT_OK) { + return CRYPT_INVALID_ARG; + } + + /* construct the SEQUENCE + SEQUENCE { + SEQUENCE {hashoid OID + blah NULL + } + hash OCTET STRING + } + */ + LTC_SET_ASN1(digestinfo, 0, LTC_ASN1_OBJECT_IDENTIFIER, st.OID, st.OIDlen); + LTC_SET_ASN1(digestinfo, 1, LTC_ASN1_NULL, NULL, 0); + LTC_SET_ASN1(siginfo, 0, LTC_ASN1_SEQUENCE, digestinfo, 2); + LTC_SET_ASN1(siginfo, 1, LTC_ASN1_OCTET_STRING, in, inlen); + + /* allocate memory for the encoding */ + y = mp_unsigned_bin_size(&key->N); + tmpin = XMALLOC(y); + if (tmpin == NULL) { + return CRYPT_MEM; + } + + if ((err = der_encode_sequence(siginfo, 2, tmpin, &y)) != CRYPT_OK) { + XFREE(tmpin); + return err; + } + + x = *outlen; + if ((err = pkcs_1_v1_5_encode(tmpin, y, LTC_LTC_PKCS_1_EMSA, + modulus_bitlen, + out, &x)) != CRYPT_OK) { + XFREE(tmpin); + return err; + } + XFREE(tmpin); + } + + /* RSA encode it */ + return rsa_exptmod(out, x, out, outlen, PK_PRIVATE, key); +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_sign_hash.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtomcrypt/pk/rsa/rsa_verify_hash.c b/crypto/userspace/libtomcrypt/pk/rsa/rsa_verify_hash.c new file mode 100644 index 0000000..b9ef89f --- /dev/null +++ b/crypto/userspace/libtomcrypt/pk/rsa/rsa_verify_hash.c @@ -0,0 +1,170 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include "ncr-int.h" +#include + +/** + @file rsa_verify_hash.c + RSA LTC_PKCS #1 v1.5 or v2 PSS signature verification, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + LTC_PKCS #1 de-sign then v1.5 or PSS depad + @param sig The signature data + @param siglen The length of the signature data (octets) + @param hash The hash of the message that was signed + @param hashlen The length of the hash of the message that was signed (octets) + @param padding Type of padding (LTC_LTC_PKCS_1_PSS or LTC_LTC_PKCS_1_V1_5) + @param hash_algo The desired hash + @param saltlen The length of the salt used during signature + @param stat [out] The result of the signature comparison, 1==valid, 0==invalid + @param key The public RSA key corresponding to the key that performed the signature + @return CRYPT_OK on success (even if the signature is invalid) +*/ +int rsa_verify_hash_ex(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int padding, + const struct algo_properties_st *hash_algo, unsigned long saltlen, + int *stat, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + unsigned char *tmpbuf; + + LTC_ARGCHK(hash != NULL); + LTC_ARGCHK(sig != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* default to invalid */ + *stat = 0; + + /* valid padding? */ + + if ((padding != LTC_LTC_PKCS_1_V1_5) && + (padding != LTC_LTC_PKCS_1_PSS)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_LTC_PKCS_1_PSS) { + /* valid hash ? */ + if ((err = hash_is_valid(hash_algo)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (&key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (&key->N)); + if (modulus_bytelen != siglen) { + return CRYPT_INVALID_PACKET; + } + + /* allocate temp buffer for decoded sig */ + tmpbuf = XMALLOC(siglen); + if (tmpbuf == NULL) { + return CRYPT_MEM; + } + + /* RSA decode it */ + x = siglen; + if ((err = rsa_exptmod(sig, siglen, tmpbuf, &x, PK_PUBLIC, key)) != CRYPT_OK) { + XFREE(tmpbuf); + return err; + } + + /* make sure the output is the right size */ + if (x != siglen) { + XFREE(tmpbuf); + return CRYPT_INVALID_PACKET; + } + + if (padding == LTC_LTC_PKCS_1_PSS) { + /* PSS decode and verify it */ + err = pkcs_1_pss_decode(hash, hashlen, tmpbuf, x, saltlen, hash_algo, modulus_bitlen, stat); + } else { + /* LTC_PKCS #1 v1.5 decode it */ + unsigned char *out; + unsigned long outlen, loid[16]; + int decoded; + ltc_asn1_list digestinfo[2], siginfo[2]; + oid_st st; + + /* not all hashes have OIDs... so sad */ + if (hash_get_oid(hash_algo, &st) != CRYPT_OK) { + err = CRYPT_INVALID_ARG; + goto bail_2; + } + + /* allocate temp buffer for decoded hash */ + outlen = ((modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0)) - 3; + out = XMALLOC(outlen); + if (out == NULL) { + err = CRYPT_MEM; + goto bail_2; + } + + if ((err = pkcs_1_v1_5_decode(tmpbuf, x, LTC_LTC_PKCS_1_EMSA, modulus_bitlen, out, &outlen, &decoded)) != CRYPT_OK) { + XFREE(out); + goto bail_2; + } + + /* now we must decode out[0...outlen-1] using ASN.1, test the OID and then test the hash */ + /* construct the SEQUENCE + SEQUENCE { + SEQUENCE {hashoid OID + blah NULL + } + hash OCTET STRING + } + */ + LTC_SET_ASN1(digestinfo, 0, LTC_ASN1_OBJECT_IDENTIFIER, loid, sizeof(loid)/sizeof(loid[0])); + LTC_SET_ASN1(digestinfo, 1, LTC_ASN1_NULL, NULL, 0); + LTC_SET_ASN1(siginfo, 0, LTC_ASN1_SEQUENCE, digestinfo, 2); + LTC_SET_ASN1(siginfo, 1, LTC_ASN1_OCTET_STRING, tmpbuf, siglen); + + if ((err = der_decode_sequence(out, outlen, siginfo, 2)) != CRYPT_OK) { + XFREE(out); + goto bail_2; + } + + /* test OID */ + if ((digestinfo[0].size == st.OIDlen) && + (XMEMCMP(digestinfo[0].data, st.OID, sizeof(unsigned long) * st.OIDlen) == 0) && + (siginfo[1].size == hashlen) && + (XMEMCMP(siginfo[1].data, hash, hashlen) == 0)) { + *stat = 1; + } + +#ifdef LTC_CLEAN_STACK + zeromem(out, outlen); +#endif + XFREE(out); + } + +bail_2: +#ifdef LTC_CLEAN_STACK + zeromem(tmpbuf, siglen); +#endif + XFREE(tmpbuf); + return err; +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_verify_hash.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/crypto/userspace/libtommath/LICENSE b/crypto/userspace/libtommath/LICENSE new file mode 100644 index 0000000..5baa792 --- /dev/null +++ b/crypto/userspace/libtommath/LICENSE @@ -0,0 +1,4 @@ +LibTomMath is hereby released into the Public Domain. + +-- Tom St Denis + diff --git a/crypto/userspace/libtommath/bn_error.c b/crypto/userspace/libtommath/bn_error.c new file mode 100644 index 0000000..b1b7177 --- /dev/null +++ b/crypto/userspace/libtommath/bn_error.c @@ -0,0 +1,47 @@ +#include +#ifdef BN_ERROR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +static const struct { + int code; + char *msg; +} msgs[] = { + { MP_OKAY, "Successful" }, + { MP_MEM, "Out of heap" }, + { MP_VAL, "Value out of range" } +}; + +/* return a char * string for a given code */ +char *mp_error_to_string(int code) +{ + int x; + + /* scan the lookup table for the given message */ + for (x = 0; x < (int)(sizeof(msgs) / sizeof(msgs[0])); x++) { + if (msgs[x].code == code) { + return msgs[x].msg; + } + } + + /* generic reply for invalid code */ + return "Invalid error code"; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_error.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_fast_mp_invmod.c b/crypto/userspace/libtommath/bn_fast_mp_invmod.c new file mode 100644 index 0000000..ff03dff --- /dev/null +++ b/crypto/userspace/libtommath/bn_fast_mp_invmod.c @@ -0,0 +1,148 @@ +#include +#ifdef BN_FAST_MP_INVMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes the modular inverse via binary extended euclidean algorithm, + * that is c = 1/a mod b + * + * Based on slow invmod except this is optimized for the case where b is + * odd as per HAC Note 14.64 on pp. 610 + */ +int fast_mp_invmod (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int x, y, u, v, B, D; + int res, neg; + + /* 2. [modified] b must be odd */ + if (mp_iseven (b) == 1) { + return MP_VAL; + } + + /* init all our temps */ + if ((res = mp_init_multi(&x, &y, &u, &v, &B, &D, NULL)) != MP_OKAY) { + return res; + } + + /* x == modulus, y == value to invert */ + if ((res = mp_copy (b, &x)) != MP_OKAY) { + goto LBL_ERR; + } + + /* we need y = |a| */ + if ((res = mp_mod (a, b, &y)) != MP_OKAY) { + goto LBL_ERR; + } + + /* 3. u=x, v=y, A=1, B=0, C=0,D=1 */ + if ((res = mp_copy (&x, &u)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_copy (&y, &v)) != MP_OKAY) { + goto LBL_ERR; + } + mp_set (&D, 1); + +top: + /* 4. while u is even do */ + while (mp_iseven (&u) == 1) { + /* 4.1 u = u/2 */ + if ((res = mp_div_2 (&u, &u)) != MP_OKAY) { + goto LBL_ERR; + } + /* 4.2 if B is odd then */ + if (mp_isodd (&B) == 1) { + if ((res = mp_sub (&B, &x, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } + /* B = B/2 */ + if ((res = mp_div_2 (&B, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* 5. while v is even do */ + while (mp_iseven (&v) == 1) { + /* 5.1 v = v/2 */ + if ((res = mp_div_2 (&v, &v)) != MP_OKAY) { + goto LBL_ERR; + } + /* 5.2 if D is odd then */ + if (mp_isodd (&D) == 1) { + /* D = (D-x)/2 */ + if ((res = mp_sub (&D, &x, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + /* D = D/2 */ + if ((res = mp_div_2 (&D, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* 6. if u >= v then */ + if (mp_cmp (&u, &v) != MP_LT) { + /* u = u - v, B = B - D */ + if ((res = mp_sub (&u, &v, &u)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&B, &D, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } else { + /* v - v - u, D = D - B */ + if ((res = mp_sub (&v, &u, &v)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&D, &B, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* if not zero goto step 4 */ + if (mp_iszero (&u) == 0) { + goto top; + } + + /* now a = C, b = D, gcd == g*v */ + + /* if v != 1 then there is no inverse */ + if (mp_cmp_d (&v, 1) != MP_EQ) { + res = MP_VAL; + goto LBL_ERR; + } + + /* b is now the inverse */ + neg = a->sign; + while (D.sign == MP_NEG) { + if ((res = mp_add (&D, b, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + mp_exch (&D, c); + c->sign = neg; + res = MP_OKAY; + +LBL_ERR:mp_clear_multi (&x, &y, &u, &v, &B, &D, NULL); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_fast_mp_invmod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_fast_mp_montgomery_reduce.c b/crypto/userspace/libtommath/bn_fast_mp_montgomery_reduce.c new file mode 100644 index 0000000..b6c0694 --- /dev/null +++ b/crypto/userspace/libtommath/bn_fast_mp_montgomery_reduce.c @@ -0,0 +1,172 @@ +#include +#ifdef BN_FAST_MP_MONTGOMERY_REDUCE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes xR**-1 == x (mod N) via Montgomery Reduction + * + * This is an optimized implementation of montgomery_reduce + * which uses the comba method to quickly calculate the columns of the + * reduction. + * + * Based on Algorithm 14.32 on pp.601 of HAC. +*/ +int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho) +{ + int ix, res, olduse; + mp_word W[MP_WARRAY]; + + /* get old used count */ + olduse = x->used; + + /* grow a as required */ + if (x->alloc < n->used + 1) { + if ((res = mp_grow (x, n->used + 1)) != MP_OKAY) { + return res; + } + } + + /* first we have to get the digits of the input into + * an array of double precision words W[...] + */ + { + register mp_word *_W; + register mp_digit *tmpx; + + /* alias for the W[] array */ + _W = W; + + /* alias for the digits of x*/ + tmpx = x->dp; + + /* copy the digits of a into W[0..a->used-1] */ + for (ix = 0; ix < x->used; ix++) { + *_W++ = *tmpx++; + } + + /* zero the high words of W[a->used..m->used*2] */ + for (; ix < n->used * 2 + 1; ix++) { + *_W++ = 0; + } + } + + /* now we proceed to zero successive digits + * from the least significant upwards + */ + for (ix = 0; ix < n->used; ix++) { + /* mu = ai * m' mod b + * + * We avoid a double precision multiplication (which isn't required) + * by casting the value down to a mp_digit. Note this requires + * that W[ix-1] have the carry cleared (see after the inner loop) + */ + register mp_digit mu; + mu = (mp_digit) (((W[ix] & MP_MASK) * rho) & MP_MASK); + + /* a = a + mu * m * b**i + * + * This is computed in place and on the fly. The multiplication + * by b**i is handled by offseting which columns the results + * are added to. + * + * Note the comba method normally doesn't handle carries in the + * inner loop In this case we fix the carry from the previous + * column since the Montgomery reduction requires digits of the + * result (so far) [see above] to work. This is + * handled by fixing up one carry after the inner loop. The + * carry fixups are done in order so after these loops the + * first m->used words of W[] have the carries fixed + */ + { + register int iy; + register mp_digit *tmpn; + register mp_word *_W; + + /* alias for the digits of the modulus */ + tmpn = n->dp; + + /* Alias for the columns set by an offset of ix */ + _W = W + ix; + + /* inner loop */ + for (iy = 0; iy < n->used; iy++) { + *_W++ += ((mp_word)mu) * ((mp_word)*tmpn++); + } + } + + /* now fix carry for next digit, W[ix+1] */ + W[ix + 1] += W[ix] >> ((mp_word) DIGIT_BIT); + } + + /* now we have to propagate the carries and + * shift the words downward [all those least + * significant digits we zeroed]. + */ + { + register mp_digit *tmpx; + register mp_word *_W, *_W1; + + /* nox fix rest of carries */ + + /* alias for current word */ + _W1 = W + ix; + + /* alias for next word, where the carry goes */ + _W = W + ++ix; + + for (; ix <= n->used * 2 + 1; ix++) { + *_W++ += *_W1++ >> ((mp_word) DIGIT_BIT); + } + + /* copy out, A = A/b**n + * + * The result is A/b**n but instead of converting from an + * array of mp_word to mp_digit than calling mp_rshd + * we just copy them in the right order + */ + + /* alias for destination word */ + tmpx = x->dp; + + /* alias for shifted double precision result */ + _W = W + n->used; + + for (ix = 0; ix < n->used + 1; ix++) { + *tmpx++ = (mp_digit)(*_W++ & ((mp_word) MP_MASK)); + } + + /* zero oldused digits, if the input a was larger than + * m->used+1 we'll have to clear the digits + */ + for (; ix < olduse; ix++) { + *tmpx++ = 0; + } + } + + /* set the max used and clamp */ + x->used = n->used + 1; + mp_clamp (x); + + /* if A >= m then A = A - m */ + if (mp_cmp_mag (x, n) != MP_LT) { + return s_mp_sub (x, n, x); + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_fast_mp_montgomery_reduce.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_fast_s_mp_mul_digs.c b/crypto/userspace/libtommath/bn_fast_s_mp_mul_digs.c new file mode 100644 index 0000000..91e10d6 --- /dev/null +++ b/crypto/userspace/libtommath/bn_fast_s_mp_mul_digs.c @@ -0,0 +1,107 @@ +#include +#ifdef BN_FAST_S_MP_MUL_DIGS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Fast (comba) multiplier + * + * This is the fast column-array [comba] multiplier. It is + * designed to compute the columns of the product first + * then handle the carries afterwards. This has the effect + * of making the nested loops that compute the columns very + * simple and schedulable on super-scalar processors. + * + * This has been modified to produce a variable number of + * digits of output so if say only a half-product is required + * you don't have to compute the upper half (a feature + * required for fast Barrett reduction). + * + * Based on Algorithm 14.12 on pp.595 of HAC. + * + */ +int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs) +{ + int olduse, res, pa, ix, iz; + mp_digit W[MP_WARRAY]; + register mp_word _W; + + /* grow the destination as required */ + if (c->alloc < digs) { + if ((res = mp_grow (c, digs)) != MP_OKAY) { + return res; + } + } + + /* number of output digits to produce */ + pa = MIN(digs, a->used + b->used); + + /* clear the carry */ + _W = 0; + for (ix = 0; ix < pa; ix++) { + int tx, ty; + int iy; + mp_digit *tmpx, *tmpy; + + /* get offsets into the two bignums */ + ty = MIN(b->used-1, ix); + tx = ix - ty; + + /* setup temp aliases */ + tmpx = a->dp + tx; + tmpy = b->dp + ty; + + /* this is the number of times the loop will iterrate, essentially + while (tx++ < a->used && ty-- >= 0) { ... } + */ + iy = MIN(a->used-tx, ty+1); + + /* execute loop */ + for (iz = 0; iz < iy; ++iz) { + _W += ((mp_word)*tmpx++)*((mp_word)*tmpy--); + + } + + /* store term */ + W[ix] = ((mp_digit)_W) & MP_MASK; + + /* make next carry */ + _W = _W >> ((mp_word)DIGIT_BIT); + } + + /* setup dest */ + olduse = c->used; + c->used = pa; + + { + register mp_digit *tmpc; + tmpc = c->dp; + for (ix = 0; ix < pa+1; ix++) { + /* now extract the previous digit [below the carry] */ + *tmpc++ = W[ix]; + } + + /* clear unused digits [that existed in the old copy of c] */ + for (; ix < olduse; ix++) { + *tmpc++ = 0; + } + } + mp_clamp (c); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_fast_s_mp_mul_digs.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_fast_s_mp_mul_high_digs.c b/crypto/userspace/libtommath/bn_fast_s_mp_mul_high_digs.c new file mode 100644 index 0000000..5b114d7 --- /dev/null +++ b/crypto/userspace/libtommath/bn_fast_s_mp_mul_high_digs.c @@ -0,0 +1,98 @@ +#include +#ifdef BN_FAST_S_MP_MUL_HIGH_DIGS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* this is a modified version of fast_s_mul_digs that only produces + * output digits *above* digs. See the comments for fast_s_mul_digs + * to see how it works. + * + * This is used in the Barrett reduction since for one of the multiplications + * only the higher digits were needed. This essentially halves the work. + * + * Based on Algorithm 14.12 on pp.595 of HAC. + */ +int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs) +{ + int olduse, res, pa, ix, iz; + mp_digit W[MP_WARRAY]; + mp_word _W; + + /* grow the destination as required */ + pa = a->used + b->used; + if (c->alloc < pa) { + if ((res = mp_grow (c, pa)) != MP_OKAY) { + return res; + } + } + + /* number of output digits to produce */ + pa = a->used + b->used; + _W = 0; + for (ix = digs; ix < pa; ix++) { + int tx, ty, iy; + mp_digit *tmpx, *tmpy; + + /* get offsets into the two bignums */ + ty = MIN(b->used-1, ix); + tx = ix - ty; + + /* setup temp aliases */ + tmpx = a->dp + tx; + tmpy = b->dp + ty; + + /* this is the number of times the loop will iterrate, essentially its + while (tx++ < a->used && ty-- >= 0) { ... } + */ + iy = MIN(a->used-tx, ty+1); + + /* execute loop */ + for (iz = 0; iz < iy; iz++) { + _W += ((mp_word)*tmpx++)*((mp_word)*tmpy--); + } + + /* store term */ + W[ix] = ((mp_digit)_W) & MP_MASK; + + /* make next carry */ + _W = _W >> ((mp_word)DIGIT_BIT); + } + + /* setup dest */ + olduse = c->used; + c->used = pa; + + { + register mp_digit *tmpc; + + tmpc = c->dp + digs; + for (ix = digs; ix < pa; ix++) { + /* now extract the previous digit [below the carry] */ + *tmpc++ = W[ix]; + } + + /* clear unused digits [that existed in the old copy of c] */ + for (; ix < olduse; ix++) { + *tmpc++ = 0; + } + } + mp_clamp (c); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_fast_s_mp_mul_high_digs.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_fast_s_mp_sqr.c b/crypto/userspace/libtommath/bn_fast_s_mp_sqr.c new file mode 100644 index 0000000..19e92ef --- /dev/null +++ b/crypto/userspace/libtommath/bn_fast_s_mp_sqr.c @@ -0,0 +1,114 @@ +#include +#ifdef BN_FAST_S_MP_SQR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* the jist of squaring... + * you do like mult except the offset of the tmpx [one that + * starts closer to zero] can't equal the offset of tmpy. + * So basically you set up iy like before then you min it with + * (ty-tx) so that it never happens. You double all those + * you add in the inner loop + +After that loop you do the squares and add them in. +*/ + +int fast_s_mp_sqr (mp_int * a, mp_int * b) +{ + int olduse, res, pa, ix, iz; + mp_digit W[MP_WARRAY], *tmpx; + mp_word W1; + + /* grow the destination as required */ + pa = a->used + a->used; + if (b->alloc < pa) { + if ((res = mp_grow (b, pa)) != MP_OKAY) { + return res; + } + } + + /* number of output digits to produce */ + W1 = 0; + for (ix = 0; ix < pa; ix++) { + int tx, ty, iy; + mp_word _W; + mp_digit *tmpy; + + /* clear counter */ + _W = 0; + + /* get offsets into the two bignums */ + ty = MIN(a->used-1, ix); + tx = ix - ty; + + /* setup temp aliases */ + tmpx = a->dp + tx; + tmpy = a->dp + ty; + + /* this is the number of times the loop will iterrate, essentially + while (tx++ < a->used && ty-- >= 0) { ... } + */ + iy = MIN(a->used-tx, ty+1); + + /* now for squaring tx can never equal ty + * we halve the distance since they approach at a rate of 2x + * and we have to round because odd cases need to be executed + */ + iy = MIN(iy, (ty-tx+1)>>1); + + /* execute loop */ + for (iz = 0; iz < iy; iz++) { + _W += ((mp_word)*tmpx++)*((mp_word)*tmpy--); + } + + /* double the inner product and add carry */ + _W = _W + _W + W1; + + /* even columns have the square term in them */ + if ((ix&1) == 0) { + _W += ((mp_word)a->dp[ix>>1])*((mp_word)a->dp[ix>>1]); + } + + /* store it */ + W[ix] = (mp_digit)(_W & MP_MASK); + + /* make next carry */ + W1 = _W >> ((mp_word)DIGIT_BIT); + } + + /* setup dest */ + olduse = b->used; + b->used = a->used+a->used; + + { + mp_digit *tmpb; + tmpb = b->dp; + for (ix = 0; ix < pa; ix++) { + *tmpb++ = W[ix] & MP_MASK; + } + + /* clear unused digits [that existed in the old copy of c] */ + for (; ix < olduse; ix++) { + *tmpb++ = 0; + } + } + mp_clamp (b); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_fast_s_mp_sqr.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_2expt.c b/crypto/userspace/libtommath/bn_mp_2expt.c new file mode 100644 index 0000000..f422ffc --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_2expt.c @@ -0,0 +1,48 @@ +#include +#ifdef BN_MP_2EXPT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes a = 2**b + * + * Simple algorithm which zeroes the int, grows it then just sets one bit + * as required. + */ +int +mp_2expt (mp_int * a, int b) +{ + int res; + + /* zero a as per default */ + mp_zero (a); + + /* grow a to accomodate the single bit */ + if ((res = mp_grow (a, b / DIGIT_BIT + 1)) != MP_OKAY) { + return res; + } + + /* set the used count of where the bit will go */ + a->used = b / DIGIT_BIT + 1; + + /* put the single bit in its place */ + a->dp[b / DIGIT_BIT] = ((mp_digit)1) << (b % DIGIT_BIT); + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_2expt.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_abs.c b/crypto/userspace/libtommath/bn_mp_abs.c new file mode 100644 index 0000000..09dd722 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_abs.c @@ -0,0 +1,43 @@ +#include +#ifdef BN_MP_ABS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* b = |a| + * + * Simple function copies the input and fixes the sign to positive + */ +int +mp_abs (mp_int * a, mp_int * b) +{ + int res; + + /* copy a to b */ + if (a != b) { + if ((res = mp_copy (a, b)) != MP_OKAY) { + return res; + } + } + + /* force the sign of b to positive */ + b->sign = MP_ZPOS; + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_abs.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_add.c b/crypto/userspace/libtommath/bn_mp_add.c new file mode 100644 index 0000000..be20644 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_add.c @@ -0,0 +1,53 @@ +#include +#ifdef BN_MP_ADD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* high level addition (handles signs) */ +int mp_add (mp_int * a, mp_int * b, mp_int * c) +{ + int sa, sb, res; + + /* get sign of both inputs */ + sa = a->sign; + sb = b->sign; + + /* handle two cases, not four */ + if (sa == sb) { + /* both positive or both negative */ + /* add their magnitudes, copy the sign */ + c->sign = sa; + res = s_mp_add (a, b, c); + } else { + /* one positive, the other negative */ + /* subtract the one with the greater magnitude from */ + /* the one of the lesser magnitude. The result gets */ + /* the sign of the one with the greater magnitude. */ + if (mp_cmp_mag (a, b) == MP_LT) { + c->sign = sb; + res = s_mp_sub (b, a, c); + } else { + c->sign = sa; + res = s_mp_sub (a, b, c); + } + } + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_add.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_add_d.c b/crypto/userspace/libtommath/bn_mp_add_d.c new file mode 100644 index 0000000..8ca36c1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_add_d.c @@ -0,0 +1,112 @@ +#include +#ifdef BN_MP_ADD_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* single digit addition */ +int +mp_add_d (mp_int * a, mp_digit b, mp_int * c) +{ + int res, ix, oldused; + mp_digit *tmpa, *tmpc, mu; + + /* grow c as required */ + if (c->alloc < a->used + 1) { + if ((res = mp_grow(c, a->used + 1)) != MP_OKAY) { + return res; + } + } + + /* if a is negative and |a| >= b, call c = |a| - b */ + if (a->sign == MP_NEG && (a->used > 1 || a->dp[0] >= b)) { + /* temporarily fix sign of a */ + a->sign = MP_ZPOS; + + /* c = |a| - b */ + res = mp_sub_d(a, b, c); + + /* fix sign */ + a->sign = c->sign = MP_NEG; + + /* clamp */ + mp_clamp(c); + + return res; + } + + /* old number of used digits in c */ + oldused = c->used; + + /* sign always positive */ + c->sign = MP_ZPOS; + + /* source alias */ + tmpa = a->dp; + + /* destination alias */ + tmpc = c->dp; + + /* if a is positive */ + if (a->sign == MP_ZPOS) { + /* add digit, after this we're propagating + * the carry. + */ + *tmpc = *tmpa++ + b; + mu = *tmpc >> DIGIT_BIT; + *tmpc++ &= MP_MASK; + + /* now handle rest of the digits */ + for (ix = 1; ix < a->used; ix++) { + *tmpc = *tmpa++ + mu; + mu = *tmpc >> DIGIT_BIT; + *tmpc++ &= MP_MASK; + } + /* set final carry */ + ix++; + *tmpc++ = mu; + + /* setup size */ + c->used = a->used + 1; + } else { + /* a was negative and |a| < b */ + c->used = 1; + + /* the result is a single digit */ + if (a->used == 1) { + *tmpc++ = b - a->dp[0]; + } else { + *tmpc++ = b; + } + + /* setup count so the clearing of oldused + * can fall through correctly + */ + ix = 1; + } + + /* now zero to oldused */ + while (ix++ < oldused) { + *tmpc++ = 0; + } + mp_clamp(c); + + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_add_d.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_addmod.c b/crypto/userspace/libtommath/bn_mp_addmod.c new file mode 100644 index 0000000..6d8afe1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_addmod.c @@ -0,0 +1,41 @@ +#include +#ifdef BN_MP_ADDMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* d = a + b (mod c) */ +int +mp_addmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d) +{ + int res; + mp_int t; + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + if ((res = mp_add (a, b, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + res = mp_mod (&t, c, d); + mp_clear (&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_addmod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_and.c b/crypto/userspace/libtommath/bn_mp_and.c new file mode 100644 index 0000000..8ea2287 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_and.c @@ -0,0 +1,57 @@ +#include +#ifdef BN_MP_AND_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* AND two ints together */ +int +mp_and (mp_int * a, mp_int * b, mp_int * c) +{ + int res, ix, px; + mp_int t, *x; + + if (a->used > b->used) { + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + px = b->used; + x = b; + } else { + if ((res = mp_init_copy (&t, b)) != MP_OKAY) { + return res; + } + px = a->used; + x = a; + } + + for (ix = 0; ix < px; ix++) { + t.dp[ix] &= x->dp[ix]; + } + + /* zero digits above the last from the smallest mp_int */ + for (; ix < t.used; ix++) { + t.dp[ix] = 0; + } + + mp_clamp (&t); + mp_exch (c, &t); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_and.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_clamp.c b/crypto/userspace/libtommath/bn_mp_clamp.c new file mode 100644 index 0000000..359c2ff --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_clamp.c @@ -0,0 +1,44 @@ +#include +#ifdef BN_MP_CLAMP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* trim unused digits + * + * This is used to ensure that leading zero digits are + * trimed and the leading "used" digit will be non-zero + * Typically very fast. Also fixes the sign if there + * are no more leading digits + */ +void +mp_clamp (mp_int * a) +{ + /* decrease used while the most significant digit is + * zero. + */ + while (a->used > 0 && a->dp[a->used - 1] == 0) { + --(a->used); + } + + /* reset the sign flag if used == 0 */ + if (a->used == 0) { + a->sign = MP_ZPOS; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_clamp.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_clear.c b/crypto/userspace/libtommath/bn_mp_clear.c new file mode 100644 index 0000000..05ee8e7 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_clear.c @@ -0,0 +1,45 @@ +#include +#include +#ifdef BN_MP_CLEAR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* clear one (frees) */ +void +mp_clear (mp_int * a) +{ + int i; + + /* only do anything if a hasn't been freed previously */ + if (a->dp != NULL) { + /* first zero the digits */ + for (i = 0; i < a->used; i++) { + a->dp[i] = 0; + } + + /* free ram */ + XFREE(a->dp); + + /* reset members to make debugging easier */ + a->dp = NULL; + a->alloc = a->used = 0; + a->sign = MP_ZPOS; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_clear.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_clear_multi.c b/crypto/userspace/libtommath/bn_mp_clear_multi.c new file mode 100644 index 0000000..daaea79 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_clear_multi.c @@ -0,0 +1,34 @@ +#include +#ifdef BN_MP_CLEAR_MULTI_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include + +void mp_clear_multi(mp_int *mp, ...) +{ + mp_int* next_mp = mp; + va_list args; + va_start(args, mp); + while (next_mp != NULL) { + mp_clear(next_mp); + next_mp = va_arg(args, mp_int*); + } + va_end(args); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_clear_multi.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_cmp.c b/crypto/userspace/libtommath/bn_mp_cmp.c new file mode 100644 index 0000000..533f36b --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_cmp.c @@ -0,0 +1,43 @@ +#include +#ifdef BN_MP_CMP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* compare two ints (signed)*/ +int +mp_cmp (mp_int * a, mp_int * b) +{ + /* compare based on sign */ + if (a->sign != b->sign) { + if (a->sign == MP_NEG) { + return MP_LT; + } else { + return MP_GT; + } + } + + /* compare digits */ + if (a->sign == MP_NEG) { + /* if negative compare opposite direction */ + return mp_cmp_mag(b, a); + } else { + return mp_cmp_mag(a, b); + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_cmp.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_cmp_d.c b/crypto/userspace/libtommath/bn_mp_cmp_d.c new file mode 100644 index 0000000..724c1c3 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_cmp_d.c @@ -0,0 +1,44 @@ +#include +#ifdef BN_MP_CMP_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* compare a digit */ +int mp_cmp_d(mp_int * a, mp_digit b) +{ + /* compare based on sign */ + if (a->sign == MP_NEG) { + return MP_LT; + } + + /* compare based on magnitude */ + if (a->used > 1) { + return MP_GT; + } + + /* compare the only digit of a to b */ + if (a->dp[0] > b) { + return MP_GT; + } else if (a->dp[0] < b) { + return MP_LT; + } else { + return MP_EQ; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_cmp_d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_cmp_mag.c b/crypto/userspace/libtommath/bn_mp_cmp_mag.c new file mode 100644 index 0000000..693eb7c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_cmp_mag.c @@ -0,0 +1,55 @@ +#include +#ifdef BN_MP_CMP_MAG_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* compare maginitude of two ints (unsigned) */ +int mp_cmp_mag (mp_int * a, mp_int * b) +{ + int n; + mp_digit *tmpa, *tmpb; + + /* compare based on # of non-zero digits */ + if (a->used > b->used) { + return MP_GT; + } + + if (a->used < b->used) { + return MP_LT; + } + + /* alias for a */ + tmpa = a->dp + (a->used - 1); + + /* alias for b */ + tmpb = b->dp + (a->used - 1); + + /* compare based on digits */ + for (n = 0; n < a->used; ++n, --tmpa, --tmpb) { + if (*tmpa > *tmpb) { + return MP_GT; + } + + if (*tmpa < *tmpb) { + return MP_LT; + } + } + return MP_EQ; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_cmp_mag.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_cnt_lsb.c b/crypto/userspace/libtommath/bn_mp_cnt_lsb.c new file mode 100644 index 0000000..66d1a74 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_cnt_lsb.c @@ -0,0 +1,53 @@ +#include +#ifdef BN_MP_CNT_LSB_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +static const int lnz[16] = { + 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 +}; + +/* Counts the number of lsbs which are zero before the first zero bit */ +int mp_cnt_lsb(mp_int *a) +{ + int x; + mp_digit q, qq; + + /* easy out */ + if (mp_iszero(a) == 1) { + return 0; + } + + /* scan lower digits until non-zero */ + for (x = 0; x < a->used && a->dp[x] == 0; x++); + q = a->dp[x]; + x *= DIGIT_BIT; + + /* now scan this digit until a 1 is found */ + if ((q & 1) == 0) { + do { + qq = q & 15; + x += lnz[qq]; + q >>= 4; + } while (qq == 0); + } + return x; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_cnt_lsb.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_copy.c b/crypto/userspace/libtommath/bn_mp_copy.c new file mode 100644 index 0000000..b0de16d --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_copy.c @@ -0,0 +1,68 @@ +#include +#ifdef BN_MP_COPY_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* copy, b = a */ +int +mp_copy (mp_int * a, mp_int * b) +{ + int res, n; + + /* if dst == src do nothing */ + if (a == b) { + return MP_OKAY; + } + + /* grow dest */ + if (b->alloc < a->used) { + if ((res = mp_grow (b, a->used)) != MP_OKAY) { + return res; + } + } + + /* zero b and copy the parameters over */ + { + register mp_digit *tmpa, *tmpb; + + /* pointer aliases */ + + /* source */ + tmpa = a->dp; + + /* destination */ + tmpb = b->dp; + + /* copy all the digits */ + for (n = 0; n < a->used; n++) { + *tmpb++ = *tmpa++; + } + + /* clear high digits */ + for (; n < b->used; n++) { + *tmpb++ = 0; + } + } + + /* copy used count and sign */ + b->used = a->used; + b->sign = a->sign; + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_copy.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_count_bits.c b/crypto/userspace/libtommath/bn_mp_count_bits.c new file mode 100644 index 0000000..8bc5657 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_count_bits.c @@ -0,0 +1,45 @@ +#include +#ifdef BN_MP_COUNT_BITS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* returns the number of bits in an int */ +int +mp_count_bits (mp_int * a) +{ + int r; + mp_digit q; + + /* shortcut */ + if (a->used == 0) { + return 0; + } + + /* get number of digits and add that */ + r = (a->used - 1) * DIGIT_BIT; + + /* take the last digit and count the bits in it */ + q = a->dp[a->used - 1]; + while (q > ((mp_digit) 0)) { + ++r; + q >>= ((mp_digit) 1); + } + return r; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_count_bits.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_div.c b/crypto/userspace/libtommath/bn_mp_div.c new file mode 100644 index 0000000..aee9c94 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_div.c @@ -0,0 +1,292 @@ +#include +#ifdef BN_MP_DIV_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +#ifdef BN_MP_DIV_SMALL + +/* slower bit-bang division... also smaller */ +int mp_div(mp_int * a, mp_int * b, mp_int * c, mp_int * d) +{ + mp_int ta, tb, tq, q; + int res, n, n2; + + /* is divisor zero ? */ + if (mp_iszero (b) == 1) { + return MP_VAL; + } + + /* if a < b then q=0, r = a */ + if (mp_cmp_mag (a, b) == MP_LT) { + if (d != NULL) { + res = mp_copy (a, d); + } else { + res = MP_OKAY; + } + if (c != NULL) { + mp_zero (c); + } + return res; + } + + /* init our temps */ + if ((res = mp_init_multi(&ta, &tb, &tq, &q, NULL) != MP_OKAY)) { + return res; + } + + + mp_set(&tq, 1); + n = mp_count_bits(a) - mp_count_bits(b); + if (((res = mp_abs(a, &ta)) != MP_OKAY) || + ((res = mp_abs(b, &tb)) != MP_OKAY) || + ((res = mp_mul_2d(&tb, n, &tb)) != MP_OKAY) || + ((res = mp_mul_2d(&tq, n, &tq)) != MP_OKAY)) { + goto LBL_ERR; + } + + while (n-- >= 0) { + if (mp_cmp(&tb, &ta) != MP_GT) { + if (((res = mp_sub(&ta, &tb, &ta)) != MP_OKAY) || + ((res = mp_add(&q, &tq, &q)) != MP_OKAY)) { + goto LBL_ERR; + } + } + if (((res = mp_div_2d(&tb, 1, &tb, NULL)) != MP_OKAY) || + ((res = mp_div_2d(&tq, 1, &tq, NULL)) != MP_OKAY)) { + goto LBL_ERR; + } + } + + /* now q == quotient and ta == remainder */ + n = a->sign; + n2 = (a->sign == b->sign ? MP_ZPOS : MP_NEG); + if (c != NULL) { + mp_exch(c, &q); + c->sign = (mp_iszero(c) == MP_YES) ? MP_ZPOS : n2; + } + if (d != NULL) { + mp_exch(d, &ta); + d->sign = (mp_iszero(d) == MP_YES) ? MP_ZPOS : n; + } +LBL_ERR: + mp_clear_multi(&ta, &tb, &tq, &q, NULL); + return res; +} + +#else + +/* integer signed division. + * c*b + d == a [e.g. a/b, c=quotient, d=remainder] + * HAC pp.598 Algorithm 14.20 + * + * Note that the description in HAC is horribly + * incomplete. For example, it doesn't consider + * the case where digits are removed from 'x' in + * the inner loop. It also doesn't consider the + * case that y has fewer than three digits, etc.. + * + * The overall algorithm is as described as + * 14.20 from HAC but fixed to treat these cases. +*/ +int mp_div (mp_int * a, mp_int * b, mp_int * c, mp_int * d) +{ + mp_int q, x, y, t1, t2; + int res, n, t, i, norm, neg; + + /* is divisor zero ? */ + if (mp_iszero (b) == 1) { + return MP_VAL; + } + + /* if a < b then q=0, r = a */ + if (mp_cmp_mag (a, b) == MP_LT) { + if (d != NULL) { + res = mp_copy (a, d); + } else { + res = MP_OKAY; + } + if (c != NULL) { + mp_zero (c); + } + return res; + } + + if ((res = mp_init_size (&q, a->used + 2)) != MP_OKAY) { + return res; + } + q.used = a->used + 2; + + if ((res = mp_init (&t1)) != MP_OKAY) { + goto LBL_Q; + } + + if ((res = mp_init (&t2)) != MP_OKAY) { + goto LBL_T1; + } + + if ((res = mp_init_copy (&x, a)) != MP_OKAY) { + goto LBL_T2; + } + + if ((res = mp_init_copy (&y, b)) != MP_OKAY) { + goto LBL_X; + } + + /* fix the sign */ + neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG; + x.sign = y.sign = MP_ZPOS; + + /* normalize both x and y, ensure that y >= b/2, [b == 2**DIGIT_BIT] */ + norm = mp_count_bits(&y) % DIGIT_BIT; + if (norm < (int)(DIGIT_BIT-1)) { + norm = (DIGIT_BIT-1) - norm; + if ((res = mp_mul_2d (&x, norm, &x)) != MP_OKAY) { + goto LBL_Y; + } + if ((res = mp_mul_2d (&y, norm, &y)) != MP_OKAY) { + goto LBL_Y; + } + } else { + norm = 0; + } + + /* note hac does 0 based, so if used==5 then its 0,1,2,3,4, e.g. use 4 */ + n = x.used - 1; + t = y.used - 1; + + /* while (x >= y*b**n-t) do { q[n-t] += 1; x -= y*b**{n-t} } */ + if ((res = mp_lshd (&y, n - t)) != MP_OKAY) { /* y = y*b**{n-t} */ + goto LBL_Y; + } + + while (mp_cmp (&x, &y) != MP_LT) { + ++(q.dp[n - t]); + if ((res = mp_sub (&x, &y, &x)) != MP_OKAY) { + goto LBL_Y; + } + } + + /* reset y by shifting it back down */ + mp_rshd (&y, n - t); + + /* step 3. for i from n down to (t + 1) */ + for (i = n; i >= (t + 1); i--) { + if (i > x.used) { + continue; + } + + /* step 3.1 if xi == yt then set q{i-t-1} to b-1, + * otherwise set q{i-t-1} to (xi*b + x{i-1})/yt */ + if (x.dp[i] == y.dp[t]) { + q.dp[i - t - 1] = ((((mp_digit)1) << DIGIT_BIT) - 1); + } else { + mp_word tmp; + tmp = ((mp_word) x.dp[i]) << ((mp_word) DIGIT_BIT); + tmp |= ((mp_word) x.dp[i - 1]); + tmp /= ((mp_word) y.dp[t]); + if (tmp > (mp_word) MP_MASK) + tmp = MP_MASK; + q.dp[i - t - 1] = (mp_digit) (tmp & (mp_word) (MP_MASK)); + } + + /* while (q{i-t-1} * (yt * b + y{t-1})) > + xi * b**2 + xi-1 * b + xi-2 + + do q{i-t-1} -= 1; + */ + q.dp[i - t - 1] = (q.dp[i - t - 1] + 1) & MP_MASK; + do { + q.dp[i - t - 1] = (q.dp[i - t - 1] - 1) & MP_MASK; + + /* find left hand */ + mp_zero (&t1); + t1.dp[0] = (t - 1 < 0) ? 0 : y.dp[t - 1]; + t1.dp[1] = y.dp[t]; + t1.used = 2; + if ((res = mp_mul_d (&t1, q.dp[i - t - 1], &t1)) != MP_OKAY) { + goto LBL_Y; + } + + /* find right hand */ + t2.dp[0] = (i - 2 < 0) ? 0 : x.dp[i - 2]; + t2.dp[1] = (i - 1 < 0) ? 0 : x.dp[i - 1]; + t2.dp[2] = x.dp[i]; + t2.used = 3; + } while (mp_cmp_mag(&t1, &t2) == MP_GT); + + /* step 3.3 x = x - q{i-t-1} * y * b**{i-t-1} */ + if ((res = mp_mul_d (&y, q.dp[i - t - 1], &t1)) != MP_OKAY) { + goto LBL_Y; + } + + if ((res = mp_lshd (&t1, i - t - 1)) != MP_OKAY) { + goto LBL_Y; + } + + if ((res = mp_sub (&x, &t1, &x)) != MP_OKAY) { + goto LBL_Y; + } + + /* if x < 0 then { x = x + y*b**{i-t-1}; q{i-t-1} -= 1; } */ + if (x.sign == MP_NEG) { + if ((res = mp_copy (&y, &t1)) != MP_OKAY) { + goto LBL_Y; + } + if ((res = mp_lshd (&t1, i - t - 1)) != MP_OKAY) { + goto LBL_Y; + } + if ((res = mp_add (&x, &t1, &x)) != MP_OKAY) { + goto LBL_Y; + } + + q.dp[i - t - 1] = (q.dp[i - t - 1] - 1UL) & MP_MASK; + } + } + + /* now q is the quotient and x is the remainder + * [which we have to normalize] + */ + + /* get sign before writing to c */ + x.sign = x.used == 0 ? MP_ZPOS : a->sign; + + if (c != NULL) { + mp_clamp (&q); + mp_exch (&q, c); + c->sign = neg; + } + + if (d != NULL) { + mp_div_2d (&x, norm, &x, NULL); + mp_exch (&x, d); + } + + res = MP_OKAY; + +LBL_Y:mp_clear (&y); +LBL_X:mp_clear (&x); +LBL_T2:mp_clear (&t2); +LBL_T1:mp_clear (&t1); +LBL_Q:mp_clear (&q); + return res; +} + +#endif + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_div.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_div_2.c b/crypto/userspace/libtommath/bn_mp_div_2.c new file mode 100644 index 0000000..7ee3e5b --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_div_2.c @@ -0,0 +1,68 @@ +#include +#ifdef BN_MP_DIV_2_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* b = a/2 */ +int mp_div_2(mp_int * a, mp_int * b) +{ + int x, res, oldused; + + /* copy */ + if (b->alloc < a->used) { + if ((res = mp_grow (b, a->used)) != MP_OKAY) { + return res; + } + } + + oldused = b->used; + b->used = a->used; + { + register mp_digit r, rr, *tmpa, *tmpb; + + /* source alias */ + tmpa = a->dp + b->used - 1; + + /* dest alias */ + tmpb = b->dp + b->used - 1; + + /* carry */ + r = 0; + for (x = b->used - 1; x >= 0; x--) { + /* get the carry for the next iteration */ + rr = *tmpa & 1; + + /* shift the current digit, add in carry and store */ + *tmpb-- = (*tmpa-- >> 1) | (r << (DIGIT_BIT - 1)); + + /* forward carry to next iteration */ + r = rr; + } + + /* zero excess digits */ + tmpb = b->dp + b->used; + for (x = b->used; x < oldused; x++) { + *tmpb++ = 0; + } + } + b->sign = a->sign; + mp_clamp (b); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_div_2.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_div_2d.c b/crypto/userspace/libtommath/bn_mp_div_2d.c new file mode 100644 index 0000000..4f7fa59 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_div_2d.c @@ -0,0 +1,97 @@ +#include +#ifdef BN_MP_DIV_2D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* shift right by a certain bit count (store quotient in c, optional remainder in d) */ +int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d) +{ + mp_digit D, r, rr; + int x, res; + mp_int t; + + + /* if the shift count is <= 0 then we do no work */ + if (b <= 0) { + res = mp_copy (a, c); + if (d != NULL) { + mp_zero (d); + } + return res; + } + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + /* get the remainder */ + if (d != NULL) { + if ((res = mp_mod_2d (a, b, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + } + + /* copy */ + if ((res = mp_copy (a, c)) != MP_OKAY) { + mp_clear (&t); + return res; + } + + /* shift by as many digits in the bit count */ + if (b >= (int)DIGIT_BIT) { + mp_rshd (c, b / DIGIT_BIT); + } + + /* shift any bit count < DIGIT_BIT */ + D = (mp_digit) (b % DIGIT_BIT); + if (D != 0) { + register mp_digit *tmpc, mask, shift; + + /* mask */ + mask = (((mp_digit)1) << D) - 1; + + /* shift for lsb */ + shift = DIGIT_BIT - D; + + /* alias */ + tmpc = c->dp + (c->used - 1); + + /* carry */ + r = 0; + for (x = c->used - 1; x >= 0; x--) { + /* get the lower bits of this word in a temp */ + rr = *tmpc & mask; + + /* shift the current word and mix in the carry bits from the previous word */ + *tmpc = (*tmpc >> D) | (r << shift); + --tmpc; + + /* set the carry to the carry bits of the current word found above */ + r = rr; + } + } + mp_clamp (c); + if (d != NULL) { + mp_exch (&t, d); + } + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_div_2d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_div_3.c b/crypto/userspace/libtommath/bn_mp_div_3.c new file mode 100644 index 0000000..3c60269 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_div_3.c @@ -0,0 +1,79 @@ +#include +#ifdef BN_MP_DIV_3_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* divide by three (based on routine from MPI and the GMP manual) */ +int +mp_div_3 (mp_int * a, mp_int *c, mp_digit * d) +{ + mp_int q; + mp_word w, t; + mp_digit b; + int res, ix; + + /* b = 2**DIGIT_BIT / 3 */ + b = (((mp_word)1) << ((mp_word)DIGIT_BIT)) / ((mp_word)3); + + if ((res = mp_init_size(&q, a->used)) != MP_OKAY) { + return res; + } + + q.used = a->used; + q.sign = a->sign; + w = 0; + for (ix = a->used - 1; ix >= 0; ix--) { + w = (w << ((mp_word)DIGIT_BIT)) | ((mp_word)a->dp[ix]); + + if (w >= 3) { + /* multiply w by [1/3] */ + t = (w * ((mp_word)b)) >> ((mp_word)DIGIT_BIT); + + /* now subtract 3 * [w/3] from w, to get the remainder */ + w -= t+t+t; + + /* fixup the remainder as required since + * the optimization is not exact. + */ + while (w >= 3) { + t += 1; + w -= 3; + } + } else { + t = 0; + } + q.dp[ix] = (mp_digit)t; + } + + /* [optional] store the remainder */ + if (d != NULL) { + *d = (mp_digit)w; + } + + /* [optional] store the quotient */ + if (c != NULL) { + mp_clamp(&q); + mp_exch(&q, c); + } + mp_clear(&q); + + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_div_3.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_div_d.c b/crypto/userspace/libtommath/bn_mp_div_d.c new file mode 100644 index 0000000..6a26d4f --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_div_d.c @@ -0,0 +1,115 @@ +#include +#ifdef BN_MP_DIV_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +static int s_is_power_of_two(mp_digit b, int *p) +{ + int x; + + /* fast return if no power of two */ + if ((b==0) || (b & (b-1))) { + return 0; + } + + for (x = 0; x < DIGIT_BIT; x++) { + if (b == (((mp_digit)1)<dp[0] & ((((mp_digit)1)<used)) != MP_OKAY) { + return res; + } + + q.used = a->used; + q.sign = a->sign; + w = 0; + for (ix = a->used - 1; ix >= 0; ix--) { + w = (w << ((mp_word)DIGIT_BIT)) | ((mp_word)a->dp[ix]); + + if (w >= b) { + t = (mp_digit)(w / b); + w -= ((mp_word)t) * ((mp_word)b); + } else { + t = 0; + } + q.dp[ix] = (mp_digit)t; + } + + if (d != NULL) { + *d = (mp_digit)w; + } + + if (c != NULL) { + mp_clamp(&q); + mp_exch(&q, c); + } + mp_clear(&q); + + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_div_d.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2007/01/09 04:44:32 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_dr_is_modulus.c b/crypto/userspace/libtommath/bn_mp_dr_is_modulus.c new file mode 100644 index 0000000..5237344 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_dr_is_modulus.c @@ -0,0 +1,43 @@ +#include +#ifdef BN_MP_DR_IS_MODULUS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines if a number is a valid DR modulus */ +int mp_dr_is_modulus(mp_int *a) +{ + int ix; + + /* must be at least two digits */ + if (a->used < 2) { + return 0; + } + + /* must be of the form b**k - a [a <= b] so all + * but the first digit must be equal to -1 (mod b). + */ + for (ix = 1; ix < a->used; ix++) { + if (a->dp[ix] != MP_MASK) { + return 0; + } + } + return 1; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_dr_is_modulus.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_dr_reduce.c b/crypto/userspace/libtommath/bn_mp_dr_reduce.c new file mode 100644 index 0000000..e60b578 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_dr_reduce.c @@ -0,0 +1,94 @@ +#include +#ifdef BN_MP_DR_REDUCE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reduce "x" in place modulo "n" using the Diminished Radix algorithm. + * + * Based on algorithm from the paper + * + * "Generating Efficient Primes for Discrete Log Cryptosystems" + * Chae Hoon Lim, Pil Joong Lee, + * POSTECH Information Research Laboratories + * + * The modulus must be of a special format [see manual] + * + * Has been modified to use algorithm 7.10 from the LTM book instead + * + * Input x must be in the range 0 <= x <= (n-1)**2 + */ +int +mp_dr_reduce (mp_int * x, mp_int * n, mp_digit k) +{ + int err, i, m; + mp_word r; + mp_digit mu, *tmpx1, *tmpx2; + + /* m = digits in modulus */ + m = n->used; + + /* ensure that "x" has at least 2m digits */ + if (x->alloc < m + m) { + if ((err = mp_grow (x, m + m)) != MP_OKAY) { + return err; + } + } + +/* top of loop, this is where the code resumes if + * another reduction pass is required. + */ +top: + /* aliases for digits */ + /* alias for lower half of x */ + tmpx1 = x->dp; + + /* alias for upper half of x, or x/B**m */ + tmpx2 = x->dp + m; + + /* set carry to zero */ + mu = 0; + + /* compute (x mod B**m) + k * [x/B**m] inline and inplace */ + for (i = 0; i < m; i++) { + r = ((mp_word)*tmpx2++) * ((mp_word)k) + *tmpx1 + mu; + *tmpx1++ = (mp_digit)(r & MP_MASK); + mu = (mp_digit)(r >> ((mp_word)DIGIT_BIT)); + } + + /* set final carry */ + *tmpx1++ = mu; + + /* zero words above m */ + for (i = m + 1; i < x->used; i++) { + *tmpx1++ = 0; + } + + /* clamp, sub and return */ + mp_clamp (x); + + /* if x >= n then subtract and reduce again + * Each successive "recursion" makes the input smaller and smaller. + */ + if (mp_cmp_mag (x, n) != MP_LT) { + s_mp_sub(x, n, x); + goto top; + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_dr_reduce.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_dr_setup.c b/crypto/userspace/libtommath/bn_mp_dr_setup.c new file mode 100644 index 0000000..1d7d856 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_dr_setup.c @@ -0,0 +1,32 @@ +#include +#ifdef BN_MP_DR_SETUP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines the setup value */ +void mp_dr_setup(mp_int *a, mp_digit *d) +{ + /* the casts are required if DIGIT_BIT is one less than + * the number of bits in a mp_digit [e.g. DIGIT_BIT==31] + */ + *d = (mp_digit)((((mp_word)1) << ((mp_word)DIGIT_BIT)) - + ((mp_word)a->dp[0])); +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_dr_setup.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_exch.c b/crypto/userspace/libtommath/bn_mp_exch.c new file mode 100644 index 0000000..38574e0 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_exch.c @@ -0,0 +1,34 @@ +#include +#ifdef BN_MP_EXCH_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* swap the elements of two integers, for cases where you can't simply swap the + * mp_int pointers around + */ +void +mp_exch (mp_int * a, mp_int * b) +{ + mp_int t; + + t = *a; + *a = *b; + *b = t; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_exch.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_expt_d.c b/crypto/userspace/libtommath/bn_mp_expt_d.c new file mode 100644 index 0000000..4bdc2d1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_expt_d.c @@ -0,0 +1,57 @@ +#include +#ifdef BN_MP_EXPT_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* calculate c = a**b using a square-multiply algorithm */ +int mp_expt_d (mp_int * a, mp_digit b, mp_int * c) +{ + int res, x; + mp_int g; + + if ((res = mp_init_copy (&g, a)) != MP_OKAY) { + return res; + } + + /* set initial result */ + mp_set (c, 1); + + for (x = 0; x < (int) DIGIT_BIT; x++) { + /* square */ + if ((res = mp_sqr (c, c)) != MP_OKAY) { + mp_clear (&g); + return res; + } + + /* if the bit is set multiply */ + if ((b & (mp_digit) (((mp_digit)1) << (DIGIT_BIT - 1))) != 0) { + if ((res = mp_mul (c, &g, c)) != MP_OKAY) { + mp_clear (&g); + return res; + } + } + + /* shift to next bit */ + b <<= 1; + } + + mp_clear (&g); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_expt_d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_exptmod.c b/crypto/userspace/libtommath/bn_mp_exptmod.c new file mode 100644 index 0000000..0231916 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_exptmod.c @@ -0,0 +1,112 @@ +#include +#ifdef BN_MP_EXPTMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + + +/* this is a shell function that calls either the normal or Montgomery + * exptmod functions. Originally the call to the montgomery code was + * embedded in the normal function but that wasted alot of stack space + * for nothing (since 99% of the time the Montgomery code would be called) + */ +int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y) +{ + int dr; + + /* modulus P must be positive */ + if (P->sign == MP_NEG) { + return MP_VAL; + } + + /* if exponent X is negative we have to recurse */ + if (X->sign == MP_NEG) { +#ifdef BN_MP_INVMOD_C + mp_int tmpG, tmpX; + int err; + + /* first compute 1/G mod P */ + if ((err = mp_init(&tmpG)) != MP_OKAY) { + return err; + } + if ((err = mp_invmod(G, P, &tmpG)) != MP_OKAY) { + mp_clear(&tmpG); + return err; + } + + /* now get |X| */ + if ((err = mp_init(&tmpX)) != MP_OKAY) { + mp_clear(&tmpG); + return err; + } + if ((err = mp_abs(X, &tmpX)) != MP_OKAY) { + mp_clear_multi(&tmpG, &tmpX, NULL); + return err; + } + + /* and now compute (1/G)**|X| instead of G**X [X < 0] */ + err = mp_exptmod(&tmpG, &tmpX, P, Y); + mp_clear_multi(&tmpG, &tmpX, NULL); + return err; +#else + /* no invmod */ + return MP_VAL; +#endif + } + +/* modified diminished radix reduction */ +#if defined(BN_MP_REDUCE_IS_2K_L_C) && defined(BN_MP_REDUCE_2K_L_C) && defined(BN_S_MP_EXPTMOD_C) + if (mp_reduce_is_2k_l(P) == MP_YES) { + return s_mp_exptmod(G, X, P, Y, 1); + } +#endif + +#ifdef BN_MP_DR_IS_MODULUS_C + /* is it a DR modulus? */ + dr = mp_dr_is_modulus(P); +#else + /* default to no */ + dr = 0; +#endif + +#ifdef BN_MP_REDUCE_IS_2K_C + /* if not, is it a unrestricted DR modulus? */ + if (dr == 0) { + dr = mp_reduce_is_2k(P) << 1; + } +#endif + + /* if the modulus is odd or dr != 0 use the montgomery method */ +#ifdef BN_MP_EXPTMOD_FAST_C + if (mp_isodd (P) == 1 || dr != 0) { + return mp_exptmod_fast (G, X, P, Y, dr); + } else { +#endif +#ifdef BN_S_MP_EXPTMOD_C + /* otherwise use the generic Barrett reduction technique */ + return s_mp_exptmod (G, X, P, Y, 0); +#else + /* no exptmod for evens */ + return MP_VAL; +#endif +#ifdef BN_MP_EXPTMOD_FAST_C + } +#endif +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_exptmod.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_exptmod_fast.c b/crypto/userspace/libtommath/bn_mp_exptmod_fast.c new file mode 100644 index 0000000..2a3b3c9 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_exptmod_fast.c @@ -0,0 +1,321 @@ +#include +#ifdef BN_MP_EXPTMOD_FAST_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes Y == G**X mod P, HAC pp.616, Algorithm 14.85 + * + * Uses a left-to-right k-ary sliding window to compute the modular exponentiation. + * The value of k changes based on the size of the exponent. + * + * Uses Montgomery or Diminished Radix reduction [whichever appropriate] + */ + +#ifdef MP_LOW_MEM + #define TAB_SIZE 32 +#else + #define TAB_SIZE 256 +#endif + +int mp_exptmod_fast (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode) +{ + mp_int M[TAB_SIZE], res; + mp_digit buf, mp; + int err, bitbuf, bitcpy, bitcnt, mode, digidx, x, y, winsize; + + /* use a pointer to the reduction algorithm. This allows us to use + * one of many reduction algorithms without modding the guts of + * the code with if statements everywhere. + */ + int (*redux)(mp_int*,mp_int*,mp_digit); + + /* find window size */ + x = mp_count_bits (X); + if (x <= 7) { + winsize = 2; + } else if (x <= 36) { + winsize = 3; + } else if (x <= 140) { + winsize = 4; + } else if (x <= 450) { + winsize = 5; + } else if (x <= 1303) { + winsize = 6; + } else if (x <= 3529) { + winsize = 7; + } else { + winsize = 8; + } + +#ifdef MP_LOW_MEM + if (winsize > 5) { + winsize = 5; + } +#endif + + /* init M array */ + /* init first cell */ + if ((err = mp_init(&M[1])) != MP_OKAY) { + return err; + } + + /* now init the second half of the array */ + for (x = 1<<(winsize-1); x < (1 << winsize); x++) { + if ((err = mp_init(&M[x])) != MP_OKAY) { + for (y = 1<<(winsize-1); y < x; y++) { + mp_clear (&M[y]); + } + mp_clear(&M[1]); + return err; + } + } + + /* determine and setup reduction code */ + if (redmode == 0) { +#ifdef BN_MP_MONTGOMERY_SETUP_C + /* now setup montgomery */ + if ((err = mp_montgomery_setup (P, &mp)) != MP_OKAY) { + goto LBL_M; + } +#else + err = MP_VAL; + goto LBL_M; +#endif + + /* automatically pick the comba one if available (saves quite a few calls/ifs) */ +#ifdef BN_FAST_MP_MONTGOMERY_REDUCE_C + if (((P->used * 2 + 1) < MP_WARRAY) && + P->used < (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) { + redux = fast_mp_montgomery_reduce; + } else +#endif + { +#ifdef BN_MP_MONTGOMERY_REDUCE_C + /* use slower baseline Montgomery method */ + redux = mp_montgomery_reduce; +#else + err = MP_VAL; + goto LBL_M; +#endif + } + } else if (redmode == 1) { +#if defined(BN_MP_DR_SETUP_C) && defined(BN_MP_DR_REDUCE_C) + /* setup DR reduction for moduli of the form B**k - b */ + mp_dr_setup(P, &mp); + redux = mp_dr_reduce; +#else + err = MP_VAL; + goto LBL_M; +#endif + } else { +#if defined(BN_MP_REDUCE_2K_SETUP_C) && defined(BN_MP_REDUCE_2K_C) + /* setup DR reduction for moduli of the form 2**k - b */ + if ((err = mp_reduce_2k_setup(P, &mp)) != MP_OKAY) { + goto LBL_M; + } + redux = mp_reduce_2k; +#else + err = MP_VAL; + goto LBL_M; +#endif + } + + /* setup result */ + if ((err = mp_init (&res)) != MP_OKAY) { + goto LBL_M; + } + + /* create M table + * + + * + * The first half of the table is not computed though accept for M[0] and M[1] + */ + + if (redmode == 0) { +#ifdef BN_MP_MONTGOMERY_CALC_NORMALIZATION_C + /* now we need R mod m */ + if ((err = mp_montgomery_calc_normalization (&res, P)) != MP_OKAY) { + goto LBL_RES; + } +#else + err = MP_VAL; + goto LBL_RES; +#endif + + /* now set M[1] to G * R mod m */ + if ((err = mp_mulmod (G, &res, P, &M[1])) != MP_OKAY) { + goto LBL_RES; + } + } else { + mp_set(&res, 1); + if ((err = mp_mod(G, P, &M[1])) != MP_OKAY) { + goto LBL_RES; + } + } + + /* compute the value at M[1<<(winsize-1)] by squaring M[1] (winsize-1) times */ + if ((err = mp_copy (&M[1], &M[1 << (winsize - 1)])) != MP_OKAY) { + goto LBL_RES; + } + + for (x = 0; x < (winsize - 1); x++) { + if ((err = mp_sqr (&M[1 << (winsize - 1)], &M[1 << (winsize - 1)])) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&M[1 << (winsize - 1)], P, mp)) != MP_OKAY) { + goto LBL_RES; + } + } + + /* create upper table */ + for (x = (1 << (winsize - 1)) + 1; x < (1 << winsize); x++) { + if ((err = mp_mul (&M[x - 1], &M[1], &M[x])) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&M[x], P, mp)) != MP_OKAY) { + goto LBL_RES; + } + } + + /* set initial mode and bit cnt */ + mode = 0; + bitcnt = 1; + buf = 0; + digidx = X->used - 1; + bitcpy = 0; + bitbuf = 0; + + for (;;) { + /* grab next digit as required */ + if (--bitcnt == 0) { + /* if digidx == -1 we are out of digits so break */ + if (digidx == -1) { + break; + } + /* read next digit and reset bitcnt */ + buf = X->dp[digidx--]; + bitcnt = (int)DIGIT_BIT; + } + + /* grab the next msb from the exponent */ + y = (mp_digit)(buf >> (DIGIT_BIT - 1)) & 1; + buf <<= (mp_digit)1; + + /* if the bit is zero and mode == 0 then we ignore it + * These represent the leading zero bits before the first 1 bit + * in the exponent. Technically this opt is not required but it + * does lower the # of trivial squaring/reductions used + */ + if (mode == 0 && y == 0) { + continue; + } + + /* if the bit is zero and mode == 1 then we square */ + if (mode == 1 && y == 0) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + continue; + } + + /* else we add it to the window */ + bitbuf |= (y << (winsize - ++bitcpy)); + mode = 2; + + if (bitcpy == winsize) { + /* ok window is filled so square as required and multiply */ + /* square first */ + for (x = 0; x < winsize; x++) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + } + + /* then multiply */ + if ((err = mp_mul (&res, &M[bitbuf], &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + + /* empty window and reset */ + bitcpy = 0; + bitbuf = 0; + mode = 1; + } + } + + /* if bits remain then square/multiply */ + if (mode == 2 && bitcpy > 0) { + /* square then multiply if the bit is set */ + for (x = 0; x < bitcpy; x++) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + + /* get next bit of the window */ + bitbuf <<= 1; + if ((bitbuf & (1 << winsize)) != 0) { + /* then multiply */ + if ((err = mp_mul (&res, &M[1], &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + } + } + } + + if (redmode == 0) { + /* fixup result if Montgomery reduction is used + * recall that any value in a Montgomery system is + * actually multiplied by R mod n. So we have + * to reduce one more time to cancel out the factor + * of R. + */ + if ((err = redux(&res, P, mp)) != MP_OKAY) { + goto LBL_RES; + } + } + + /* swap res with Y */ + mp_exch (&res, Y); + err = MP_OKAY; +LBL_RES:mp_clear (&res); +LBL_M: + mp_clear(&M[1]); + for (x = 1<<(winsize-1); x < (1 << winsize); x++) { + mp_clear (&M[x]); + } + return err; +} +#endif + + +/* $Source: /cvs/libtom/libtommath/bn_mp_exptmod_fast.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_exteuclid.c b/crypto/userspace/libtommath/bn_mp_exteuclid.c new file mode 100644 index 0000000..e6c4ce2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_exteuclid.c @@ -0,0 +1,82 @@ +#include +#ifdef BN_MP_EXTEUCLID_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Extended euclidean algorithm of (a, b) produces + a*u1 + b*u2 = u3 + */ +int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3) +{ + mp_int u1,u2,u3,v1,v2,v3,t1,t2,t3,q,tmp; + int err; + + if ((err = mp_init_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL)) != MP_OKAY) { + return err; + } + + /* initialize, (u1,u2,u3) = (1,0,a) */ + mp_set(&u1, 1); + if ((err = mp_copy(a, &u3)) != MP_OKAY) { goto _ERR; } + + /* initialize, (v1,v2,v3) = (0,1,b) */ + mp_set(&v2, 1); + if ((err = mp_copy(b, &v3)) != MP_OKAY) { goto _ERR; } + + /* loop while v3 != 0 */ + while (mp_iszero(&v3) == MP_NO) { + /* q = u3/v3 */ + if ((err = mp_div(&u3, &v3, &q, NULL)) != MP_OKAY) { goto _ERR; } + + /* (t1,t2,t3) = (u1,u2,u3) - (v1,v2,v3)q */ + if ((err = mp_mul(&v1, &q, &tmp)) != MP_OKAY) { goto _ERR; } + if ((err = mp_sub(&u1, &tmp, &t1)) != MP_OKAY) { goto _ERR; } + if ((err = mp_mul(&v2, &q, &tmp)) != MP_OKAY) { goto _ERR; } + if ((err = mp_sub(&u2, &tmp, &t2)) != MP_OKAY) { goto _ERR; } + if ((err = mp_mul(&v3, &q, &tmp)) != MP_OKAY) { goto _ERR; } + if ((err = mp_sub(&u3, &tmp, &t3)) != MP_OKAY) { goto _ERR; } + + /* (u1,u2,u3) = (v1,v2,v3) */ + if ((err = mp_copy(&v1, &u1)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&v2, &u2)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&v3, &u3)) != MP_OKAY) { goto _ERR; } + + /* (v1,v2,v3) = (t1,t2,t3) */ + if ((err = mp_copy(&t1, &v1)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&t2, &v2)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&t3, &v3)) != MP_OKAY) { goto _ERR; } + } + + /* make sure U3 >= 0 */ + if (u3.sign == MP_NEG) { + mp_neg(&u1, &u1); + mp_neg(&u2, &u2); + mp_neg(&u3, &u3); + } + + /* copy result out */ + if (U1 != NULL) { mp_exch(U1, &u1); } + if (U2 != NULL) { mp_exch(U2, &u2); } + if (U3 != NULL) { mp_exch(U3, &u3); } + + err = MP_OKAY; +_ERR: mp_clear_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_exteuclid.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_gcd.c b/crypto/userspace/libtommath/bn_mp_gcd.c new file mode 100644 index 0000000..b39ba90 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_gcd.c @@ -0,0 +1,105 @@ +#include +#ifdef BN_MP_GCD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Greatest Common Divisor using the binary method */ +int mp_gcd (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int u, v; + int k, u_lsb, v_lsb, res; + + /* either zero than gcd is the largest */ + if (mp_iszero (a) == MP_YES) { + return mp_abs (b, c); + } + if (mp_iszero (b) == MP_YES) { + return mp_abs (a, c); + } + + /* get copies of a and b we can modify */ + if ((res = mp_init_copy (&u, a)) != MP_OKAY) { + return res; + } + + if ((res = mp_init_copy (&v, b)) != MP_OKAY) { + goto LBL_U; + } + + /* must be positive for the remainder of the algorithm */ + u.sign = v.sign = MP_ZPOS; + + /* B1. Find the common power of two for u and v */ + u_lsb = mp_cnt_lsb(&u); + v_lsb = mp_cnt_lsb(&v); + k = MIN(u_lsb, v_lsb); + + if (k > 0) { + /* divide the power of two out */ + if ((res = mp_div_2d(&u, k, &u, NULL)) != MP_OKAY) { + goto LBL_V; + } + + if ((res = mp_div_2d(&v, k, &v, NULL)) != MP_OKAY) { + goto LBL_V; + } + } + + /* divide any remaining factors of two out */ + if (u_lsb != k) { + if ((res = mp_div_2d(&u, u_lsb - k, &u, NULL)) != MP_OKAY) { + goto LBL_V; + } + } + + if (v_lsb != k) { + if ((res = mp_div_2d(&v, v_lsb - k, &v, NULL)) != MP_OKAY) { + goto LBL_V; + } + } + + while (mp_iszero(&v) == 0) { + /* make sure v is the largest */ + if (mp_cmp_mag(&u, &v) == MP_GT) { + /* swap u and v to make sure v is >= u */ + mp_exch(&u, &v); + } + + /* subtract smallest from largest */ + if ((res = s_mp_sub(&v, &u, &v)) != MP_OKAY) { + goto LBL_V; + } + + /* Divide out all factors of two */ + if ((res = mp_div_2d(&v, mp_cnt_lsb(&v), &v, NULL)) != MP_OKAY) { + goto LBL_V; + } + } + + /* multiply by 2**k which we divided out at the beginning */ + if ((res = mp_mul_2d (&u, k, c)) != MP_OKAY) { + goto LBL_V; + } + c->sign = MP_ZPOS; + res = MP_OKAY; +LBL_V:mp_clear (&u); +LBL_U:mp_clear (&v); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_gcd.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_get_int.c b/crypto/userspace/libtommath/bn_mp_get_int.c new file mode 100644 index 0000000..17162e2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_get_int.c @@ -0,0 +1,45 @@ +#include +#ifdef BN_MP_GET_INT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* get the lower 32-bits of an mp_int */ +unsigned long mp_get_int(mp_int * a) +{ + int i; + unsigned long res; + + if (a->used == 0) { + return 0; + } + + /* get number of digits of the lsb we have to read */ + i = MIN(a->used,(int)((sizeof(unsigned long)*CHAR_BIT+DIGIT_BIT-1)/DIGIT_BIT))-1; + + /* get most significant digit of result */ + res = DIGIT(a,i); + + while (--i >= 0) { + res = (res << DIGIT_BIT) | DIGIT(a,i); + } + + /* force result to 32-bits always so it is consistent on non 32-bit platforms */ + return res & 0xFFFFFFFFUL; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_get_int.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_grow.c b/crypto/userspace/libtommath/bn_mp_grow.c new file mode 100644 index 0000000..3646c6c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_grow.c @@ -0,0 +1,58 @@ +#include +#include +#ifdef BN_MP_GROW_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* grow as required */ +int mp_grow (mp_int * a, int size) +{ + int i; + mp_digit *tmp; + + /* if the alloc size is smaller alloc more ram */ + if (a->alloc < size) { + /* ensure there are always at least MP_PREC digits extra on top */ + size += (MP_PREC * 2) - (size % MP_PREC); + + /* reallocate the array a->dp + * + * We store the return in a temporary variable + * in case the operation failed we don't want + * to overwrite the dp member of a. + */ + tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * size); + if (tmp == NULL) { + /* reallocation failed but "a" is still valid [can be freed] */ + return MP_MEM; + } + + /* reallocation succeeded so set a->dp */ + a->dp = tmp; + + /* zero excess digits */ + i = a->alloc; + a->alloc = size; + for (; i < a->alloc; i++) { + a->dp[i] = 0; + } + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_grow.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init.c b/crypto/userspace/libtommath/bn_mp_init.c new file mode 100644 index 0000000..990500b --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init.c @@ -0,0 +1,47 @@ +#include +#include +#ifdef BN_MP_INIT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* init a new mp_int */ +int mp_init (mp_int * a) +{ + int i; + + /* allocate memory required and clear it */ + a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); + if (a->dp == NULL) { + return MP_MEM; + } + + /* set the digits to zero */ + for (i = 0; i < MP_PREC; i++) { + a->dp[i] = 0; + } + + /* set the used to zero, allocated digits to the default precision + * and sign to positive */ + a->used = 0; + a->alloc = MP_PREC; + a->sign = MP_ZPOS; + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init_copy.c b/crypto/userspace/libtommath/bn_mp_init_copy.c new file mode 100644 index 0000000..0160811 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init_copy.c @@ -0,0 +1,32 @@ +#include +#ifdef BN_MP_INIT_COPY_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* creates "a" then copies b into it */ +int mp_init_copy (mp_int * a, mp_int * b) +{ + int res; + + if ((res = mp_init (a)) != MP_OKAY) { + return res; + } + return mp_copy (b, a); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init_copy.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init_multi.c b/crypto/userspace/libtommath/bn_mp_init_multi.c new file mode 100644 index 0000000..59dc3a9 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init_multi.c @@ -0,0 +1,59 @@ +#include +#ifdef BN_MP_INIT_MULTI_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include + +int mp_init_multi(mp_int *mp, ...) +{ + mp_err res = MP_OKAY; /* Assume ok until proven otherwise */ + int n = 0; /* Number of ok inits */ + mp_int* cur_arg = mp; + va_list args; + + va_start(args, mp); /* init args to next argument from caller */ + while (cur_arg != NULL) { + if (mp_init(cur_arg) != MP_OKAY) { + /* Oops - error! Back-track and mp_clear what we already + succeeded in init-ing, then return error. + */ + va_list clean_args; + + /* end the current list */ + va_end(args); + + /* now start cleaning up */ + cur_arg = mp; + va_start(clean_args, mp); + while (n--) { + mp_clear(cur_arg); + cur_arg = va_arg(clean_args, mp_int*); + } + va_end(clean_args); + res = MP_MEM; + break; + } + n++; + cur_arg = va_arg(args, mp_int*); + } + va_end(args); + return res; /* Assumed ok, if error flagged above. */ +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init_multi.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init_set.c b/crypto/userspace/libtommath/bn_mp_init_set.c new file mode 100644 index 0000000..34edad9 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init_set.c @@ -0,0 +1,32 @@ +#include +#ifdef BN_MP_INIT_SET_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* initialize and set a digit */ +int mp_init_set (mp_int * a, mp_digit b) +{ + int err; + if ((err = mp_init(a)) != MP_OKAY) { + return err; + } + mp_set(a, b); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init_set.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init_set_int.c b/crypto/userspace/libtommath/bn_mp_init_set_int.c new file mode 100644 index 0000000..5c55993 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init_set_int.c @@ -0,0 +1,31 @@ +#include +#ifdef BN_MP_INIT_SET_INT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* initialize and set a digit */ +int mp_init_set_int (mp_int * a, unsigned long b) +{ + int err; + if ((err = mp_init(a)) != MP_OKAY) { + return err; + } + return mp_set_int(a, b); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init_set_int.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_init_size.c b/crypto/userspace/libtommath/bn_mp_init_size.c new file mode 100644 index 0000000..ba46d3a --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_init_size.c @@ -0,0 +1,49 @@ +#include +#include +#ifdef BN_MP_INIT_SIZE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* init an mp_init for a given size */ +int mp_init_size (mp_int * a, int size) +{ + int x; + + /* pad size so there are always extra digits */ + size += (MP_PREC * 2) - (size % MP_PREC); + + /* alloc mem */ + a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size); + if (a->dp == NULL) { + return MP_MEM; + } + + /* set the members */ + a->used = 0; + a->alloc = size; + a->sign = MP_ZPOS; + + /* zero the digits */ + for (x = 0; x < size; x++) { + a->dp[x] = 0; + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_init_size.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_invmod.c b/crypto/userspace/libtommath/bn_mp_invmod.c new file mode 100644 index 0000000..1546514 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_invmod.c @@ -0,0 +1,43 @@ +#include +#ifdef BN_MP_INVMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* hac 14.61, pp608 */ +int mp_invmod (mp_int * a, mp_int * b, mp_int * c) +{ + /* b cannot be negative */ + if (b->sign == MP_NEG || mp_iszero(b) == 1) { + return MP_VAL; + } + +#ifdef BN_FAST_MP_INVMOD_C + /* if the modulus is odd we can use a faster routine instead */ + if (mp_isodd (b) == 1) { + return fast_mp_invmod (a, b, c); + } +#endif + +#ifdef BN_MP_INVMOD_SLOW_C + return mp_invmod_slow(a, b, c); +#endif + + return MP_VAL; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_invmod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_invmod_slow.c b/crypto/userspace/libtommath/bn_mp_invmod_slow.c new file mode 100644 index 0000000..eedd47d --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_invmod_slow.c @@ -0,0 +1,175 @@ +#include +#ifdef BN_MP_INVMOD_SLOW_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* hac 14.61, pp608 */ +int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int x, y, u, v, A, B, C, D; + int res; + + /* b cannot be negative */ + if (b->sign == MP_NEG || mp_iszero(b) == 1) { + return MP_VAL; + } + + /* init temps */ + if ((res = mp_init_multi(&x, &y, &u, &v, + &A, &B, &C, &D, NULL)) != MP_OKAY) { + return res; + } + + /* x = a, y = b */ + if ((res = mp_mod(a, b, &x)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_copy (b, &y)) != MP_OKAY) { + goto LBL_ERR; + } + + /* 2. [modified] if x,y are both even then return an error! */ + if (mp_iseven (&x) == 1 && mp_iseven (&y) == 1) { + res = MP_VAL; + goto LBL_ERR; + } + + /* 3. u=x, v=y, A=1, B=0, C=0,D=1 */ + if ((res = mp_copy (&x, &u)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_copy (&y, &v)) != MP_OKAY) { + goto LBL_ERR; + } + mp_set (&A, 1); + mp_set (&D, 1); + +top: + /* 4. while u is even do */ + while (mp_iseven (&u) == 1) { + /* 4.1 u = u/2 */ + if ((res = mp_div_2 (&u, &u)) != MP_OKAY) { + goto LBL_ERR; + } + /* 4.2 if A or B is odd then */ + if (mp_isodd (&A) == 1 || mp_isodd (&B) == 1) { + /* A = (A+y)/2, B = (B-x)/2 */ + if ((res = mp_add (&A, &y, &A)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_sub (&B, &x, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } + /* A = A/2, B = B/2 */ + if ((res = mp_div_2 (&A, &A)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_div_2 (&B, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* 5. while v is even do */ + while (mp_iseven (&v) == 1) { + /* 5.1 v = v/2 */ + if ((res = mp_div_2 (&v, &v)) != MP_OKAY) { + goto LBL_ERR; + } + /* 5.2 if C or D is odd then */ + if (mp_isodd (&C) == 1 || mp_isodd (&D) == 1) { + /* C = (C+y)/2, D = (D-x)/2 */ + if ((res = mp_add (&C, &y, &C)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_sub (&D, &x, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + /* C = C/2, D = D/2 */ + if ((res = mp_div_2 (&C, &C)) != MP_OKAY) { + goto LBL_ERR; + } + if ((res = mp_div_2 (&D, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* 6. if u >= v then */ + if (mp_cmp (&u, &v) != MP_LT) { + /* u = u - v, A = A - C, B = B - D */ + if ((res = mp_sub (&u, &v, &u)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&A, &C, &A)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&B, &D, &B)) != MP_OKAY) { + goto LBL_ERR; + } + } else { + /* v - v - u, C = C - A, D = D - B */ + if ((res = mp_sub (&v, &u, &v)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&C, &A, &C)) != MP_OKAY) { + goto LBL_ERR; + } + + if ((res = mp_sub (&D, &B, &D)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* if not zero goto step 4 */ + if (mp_iszero (&u) == 0) + goto top; + + /* now a = C, b = D, gcd == g*v */ + + /* if v != 1 then there is no inverse */ + if (mp_cmp_d (&v, 1) != MP_EQ) { + res = MP_VAL; + goto LBL_ERR; + } + + /* if its too low */ + while (mp_cmp_d(&C, 0) == MP_LT) { + if ((res = mp_add(&C, b, &C)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* too big */ + while (mp_cmp_mag(&C, b) != MP_LT) { + if ((res = mp_sub(&C, b, &C)) != MP_OKAY) { + goto LBL_ERR; + } + } + + /* C is now the inverse */ + mp_exch (&C, c); + res = MP_OKAY; +LBL_ERR:mp_clear_multi (&x, &y, &u, &v, &A, &B, &C, &D, NULL); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_invmod_slow.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_is_square.c b/crypto/userspace/libtommath/bn_mp_is_square.c new file mode 100644 index 0000000..50c5244 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_is_square.c @@ -0,0 +1,109 @@ +#include +#ifdef BN_MP_IS_SQUARE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Check if remainders are possible squares - fast exclude non-squares */ +static const char rem_128[128] = { + 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1 +}; + +static const char rem_105[105] = { + 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, + 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, + 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, + 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, + 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, + 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1 +}; + +/* Store non-zero to ret if arg is square, and zero if not */ +int mp_is_square(mp_int *arg,int *ret) +{ + int res; + mp_digit c; + mp_int t; + unsigned long r; + + /* Default to Non-square :) */ + *ret = MP_NO; + + if (arg->sign == MP_NEG) { + return MP_VAL; + } + + /* digits used? (TSD) */ + if (arg->used == 0) { + return MP_OKAY; + } + + /* First check mod 128 (suppose that DIGIT_BIT is at least 7) */ + if (rem_128[127 & DIGIT(arg,0)] == 1) { + return MP_OKAY; + } + + /* Next check mod 105 (3*5*7) */ + if ((res = mp_mod_d(arg,105,&c)) != MP_OKAY) { + return res; + } + if (rem_105[c] == 1) { + return MP_OKAY; + } + + + if ((res = mp_init_set_int(&t,11L*13L*17L*19L*23L*29L*31L)) != MP_OKAY) { + return res; + } + if ((res = mp_mod(arg,&t,&t)) != MP_OKAY) { + goto ERR; + } + r = mp_get_int(&t); + /* Check for other prime modules, note it's not an ERROR but we must + * free "t" so the easiest way is to goto ERR. We know that res + * is already equal to MP_OKAY from the mp_mod call + */ + if ( (1L<<(r%11)) & 0x5C4L ) goto ERR; + if ( (1L<<(r%13)) & 0x9E4L ) goto ERR; + if ( (1L<<(r%17)) & 0x5CE8L ) goto ERR; + if ( (1L<<(r%19)) & 0x4F50CL ) goto ERR; + if ( (1L<<(r%23)) & 0x7ACCA0L ) goto ERR; + if ( (1L<<(r%29)) & 0xC2EDD0CL ) goto ERR; + if ( (1L<<(r%31)) & 0x6DE2B848L ) goto ERR; + + /* Final check - is sqr(sqrt(arg)) == arg ? */ + if ((res = mp_sqrt(arg,&t)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sqr(&t,&t)) != MP_OKAY) { + goto ERR; + } + + *ret = (mp_cmp_mag(&t,arg) == MP_EQ) ? MP_YES : MP_NO; +ERR:mp_clear(&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_is_square.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_jacobi.c b/crypto/userspace/libtommath/bn_mp_jacobi.c new file mode 100644 index 0000000..91cfeea --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_jacobi.c @@ -0,0 +1,105 @@ +#include +#ifdef BN_MP_JACOBI_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes the jacobi c = (a | n) (or Legendre if n is prime) + * HAC pp. 73 Algorithm 2.149 + */ +int mp_jacobi (mp_int * a, mp_int * p, int *c) +{ + mp_int a1, p1; + int k, s, r, res; + mp_digit residue; + + /* if p <= 0 return MP_VAL */ + if (mp_cmp_d(p, 0) != MP_GT) { + return MP_VAL; + } + + /* step 1. if a == 0, return 0 */ + if (mp_iszero (a) == 1) { + *c = 0; + return MP_OKAY; + } + + /* step 2. if a == 1, return 1 */ + if (mp_cmp_d (a, 1) == MP_EQ) { + *c = 1; + return MP_OKAY; + } + + /* default */ + s = 0; + + /* step 3. write a = a1 * 2**k */ + if ((res = mp_init_copy (&a1, a)) != MP_OKAY) { + return res; + } + + if ((res = mp_init (&p1)) != MP_OKAY) { + goto LBL_A1; + } + + /* divide out larger power of two */ + k = mp_cnt_lsb(&a1); + if ((res = mp_div_2d(&a1, k, &a1, NULL)) != MP_OKAY) { + goto LBL_P1; + } + + /* step 4. if e is even set s=1 */ + if ((k & 1) == 0) { + s = 1; + } else { + /* else set s=1 if p = 1/7 (mod 8) or s=-1 if p = 3/5 (mod 8) */ + residue = p->dp[0] & 7; + + if (residue == 1 || residue == 7) { + s = 1; + } else if (residue == 3 || residue == 5) { + s = -1; + } + } + + /* step 5. if p == 3 (mod 4) *and* a1 == 3 (mod 4) then s = -s */ + if ( ((p->dp[0] & 3) == 3) && ((a1.dp[0] & 3) == 3)) { + s = -s; + } + + /* if a1 == 1 we're done */ + if (mp_cmp_d (&a1, 1) == MP_EQ) { + *c = s; + } else { + /* n1 = n mod a1 */ + if ((res = mp_mod (p, &a1, &p1)) != MP_OKAY) { + goto LBL_P1; + } + if ((res = mp_jacobi (&p1, &a1, &r)) != MP_OKAY) { + goto LBL_P1; + } + *c = s * r; + } + + /* done */ + res = MP_OKAY; +LBL_P1:mp_clear (&p1); +LBL_A1:mp_clear (&a1); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_jacobi.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_karatsuba_mul.c b/crypto/userspace/libtommath/bn_mp_karatsuba_mul.c new file mode 100644 index 0000000..8ea2c27 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_karatsuba_mul.c @@ -0,0 +1,167 @@ +#include +#ifdef BN_MP_KARATSUBA_MUL_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* c = |a| * |b| using Karatsuba Multiplication using + * three half size multiplications + * + * Let B represent the radix [e.g. 2**DIGIT_BIT] and + * let n represent half of the number of digits in + * the min(a,b) + * + * a = a1 * B**n + a0 + * b = b1 * B**n + b0 + * + * Then, a * b => + a1b1 * B**2n + ((a1 + a0)(b1 + b0) - (a0b0 + a1b1)) * B + a0b0 + * + * Note that a1b1 and a0b0 are used twice and only need to be + * computed once. So in total three half size (half # of + * digit) multiplications are performed, a0b0, a1b1 and + * (a1+b1)(a0+b0) + * + * Note that a multiplication of half the digits requires + * 1/4th the number of single precision multiplications so in + * total after one call 25% of the single precision multiplications + * are saved. Note also that the call to mp_mul can end up back + * in this function if the a0, a1, b0, or b1 are above the threshold. + * This is known as divide-and-conquer and leads to the famous + * O(N**lg(3)) or O(N**1.584) work which is asymptopically lower than + * the standard O(N**2) that the baseline/comba methods use. + * Generally though the overhead of this method doesn't pay off + * until a certain size (N ~ 80) is reached. + */ +int mp_karatsuba_mul (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int x0, x1, y0, y1, t1, x0y0, x1y1; + int B, err; + + /* default the return code to an error */ + err = MP_MEM; + + /* min # of digits */ + B = MIN (a->used, b->used); + + /* now divide in two */ + B = B >> 1; + + /* init copy all the temps */ + if (mp_init_size (&x0, B) != MP_OKAY) + goto ERR; + if (mp_init_size (&x1, a->used - B) != MP_OKAY) + goto X0; + if (mp_init_size (&y0, B) != MP_OKAY) + goto X1; + if (mp_init_size (&y1, b->used - B) != MP_OKAY) + goto Y0; + + /* init temps */ + if (mp_init_size (&t1, B * 2) != MP_OKAY) + goto Y1; + if (mp_init_size (&x0y0, B * 2) != MP_OKAY) + goto T1; + if (mp_init_size (&x1y1, B * 2) != MP_OKAY) + goto X0Y0; + + /* now shift the digits */ + x0.used = y0.used = B; + x1.used = a->used - B; + y1.used = b->used - B; + + { + register int x; + register mp_digit *tmpa, *tmpb, *tmpx, *tmpy; + + /* we copy the digits directly instead of using higher level functions + * since we also need to shift the digits + */ + tmpa = a->dp; + tmpb = b->dp; + + tmpx = x0.dp; + tmpy = y0.dp; + for (x = 0; x < B; x++) { + *tmpx++ = *tmpa++; + *tmpy++ = *tmpb++; + } + + tmpx = x1.dp; + for (x = B; x < a->used; x++) { + *tmpx++ = *tmpa++; + } + + tmpy = y1.dp; + for (x = B; x < b->used; x++) { + *tmpy++ = *tmpb++; + } + } + + /* only need to clamp the lower words since by definition the + * upper words x1/y1 must have a known number of digits + */ + mp_clamp (&x0); + mp_clamp (&y0); + + /* now calc the products x0y0 and x1y1 */ + /* after this x0 is no longer required, free temp [x0==t2]! */ + if (mp_mul (&x0, &y0, &x0y0) != MP_OKAY) + goto X1Y1; /* x0y0 = x0*y0 */ + if (mp_mul (&x1, &y1, &x1y1) != MP_OKAY) + goto X1Y1; /* x1y1 = x1*y1 */ + + /* now calc x1+x0 and y1+y0 */ + if (s_mp_add (&x1, &x0, &t1) != MP_OKAY) + goto X1Y1; /* t1 = x1 - x0 */ + if (s_mp_add (&y1, &y0, &x0) != MP_OKAY) + goto X1Y1; /* t2 = y1 - y0 */ + if (mp_mul (&t1, &x0, &t1) != MP_OKAY) + goto X1Y1; /* t1 = (x1 + x0) * (y1 + y0) */ + + /* add x0y0 */ + if (mp_add (&x0y0, &x1y1, &x0) != MP_OKAY) + goto X1Y1; /* t2 = x0y0 + x1y1 */ + if (s_mp_sub (&t1, &x0, &t1) != MP_OKAY) + goto X1Y1; /* t1 = (x1+x0)*(y1+y0) - (x1y1 + x0y0) */ + + /* shift by B */ + if (mp_lshd (&t1, B) != MP_OKAY) + goto X1Y1; /* t1 = (x0y0 + x1y1 - (x1-x0)*(y1-y0))< +#ifdef BN_MP_KARATSUBA_SQR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Karatsuba squaring, computes b = a*a using three + * half size squarings + * + * See comments of karatsuba_mul for details. It + * is essentially the same algorithm but merely + * tuned to perform recursive squarings. + */ +int mp_karatsuba_sqr (mp_int * a, mp_int * b) +{ + mp_int x0, x1, t1, t2, x0x0, x1x1; + int B, err; + + err = MP_MEM; + + /* min # of digits */ + B = a->used; + + /* now divide in two */ + B = B >> 1; + + /* init copy all the temps */ + if (mp_init_size (&x0, B) != MP_OKAY) + goto ERR; + if (mp_init_size (&x1, a->used - B) != MP_OKAY) + goto X0; + + /* init temps */ + if (mp_init_size (&t1, a->used * 2) != MP_OKAY) + goto X1; + if (mp_init_size (&t2, a->used * 2) != MP_OKAY) + goto T1; + if (mp_init_size (&x0x0, B * 2) != MP_OKAY) + goto T2; + if (mp_init_size (&x1x1, (a->used - B) * 2) != MP_OKAY) + goto X0X0; + + { + register int x; + register mp_digit *dst, *src; + + src = a->dp; + + /* now shift the digits */ + dst = x0.dp; + for (x = 0; x < B; x++) { + *dst++ = *src++; + } + + dst = x1.dp; + for (x = B; x < a->used; x++) { + *dst++ = *src++; + } + } + + x0.used = B; + x1.used = a->used - B; + + mp_clamp (&x0); + + /* now calc the products x0*x0 and x1*x1 */ + if (mp_sqr (&x0, &x0x0) != MP_OKAY) + goto X1X1; /* x0x0 = x0*x0 */ + if (mp_sqr (&x1, &x1x1) != MP_OKAY) + goto X1X1; /* x1x1 = x1*x1 */ + + /* now calc (x1+x0)**2 */ + if (s_mp_add (&x1, &x0, &t1) != MP_OKAY) + goto X1X1; /* t1 = x1 - x0 */ + if (mp_sqr (&t1, &t1) != MP_OKAY) + goto X1X1; /* t1 = (x1 - x0) * (x1 - x0) */ + + /* add x0y0 */ + if (s_mp_add (&x0x0, &x1x1, &t2) != MP_OKAY) + goto X1X1; /* t2 = x0x0 + x1x1 */ + if (s_mp_sub (&t1, &t2, &t1) != MP_OKAY) + goto X1X1; /* t1 = (x1+x0)**2 - (x0x0 + x1x1) */ + + /* shift by B */ + if (mp_lshd (&t1, B) != MP_OKAY) + goto X1X1; /* t1 = (x0x0 + x1x1 - (x1-x0)*(x1-x0))< +#ifdef BN_MP_LCM_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes least common multiple as |a*b|/(a, b) */ +int mp_lcm (mp_int * a, mp_int * b, mp_int * c) +{ + int res; + mp_int t1, t2; + + + if ((res = mp_init_multi (&t1, &t2, NULL)) != MP_OKAY) { + return res; + } + + /* t1 = get the GCD of the two inputs */ + if ((res = mp_gcd (a, b, &t1)) != MP_OKAY) { + goto LBL_T; + } + + /* divide the smallest by the GCD */ + if (mp_cmp_mag(a, b) == MP_LT) { + /* store quotient in t2 such that t2 * b is the LCM */ + if ((res = mp_div(a, &t1, &t2, NULL)) != MP_OKAY) { + goto LBL_T; + } + res = mp_mul(b, &t2, c); + } else { + /* store quotient in t2 such that t2 * a is the LCM */ + if ((res = mp_div(b, &t1, &t2, NULL)) != MP_OKAY) { + goto LBL_T; + } + res = mp_mul(a, &t2, c); + } + + /* fix the sign to positive */ + c->sign = MP_ZPOS; + +LBL_T: + mp_clear_multi (&t1, &t2, NULL); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_lcm.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_lshd.c b/crypto/userspace/libtommath/bn_mp_lshd.c new file mode 100644 index 0000000..f118cf1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_lshd.c @@ -0,0 +1,67 @@ +#include +#ifdef BN_MP_LSHD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* shift left a certain amount of digits */ +int mp_lshd (mp_int * a, int b) +{ + int x, res; + + /* if its less than zero return */ + if (b <= 0) { + return MP_OKAY; + } + + /* grow to fit the new digits */ + if (a->alloc < a->used + b) { + if ((res = mp_grow (a, a->used + b)) != MP_OKAY) { + return res; + } + } + + { + register mp_digit *top, *bottom; + + /* increment the used by the shift amount then copy upwards */ + a->used += b; + + /* top */ + top = a->dp + a->used - 1; + + /* base */ + bottom = a->dp + a->used - 1 - b; + + /* much like mp_rshd this is implemented using a sliding window + * except the window goes the otherway around. Copying from + * the bottom to the top. see bn_mp_rshd.c for more info. + */ + for (x = a->used - 1; x >= b; x--) { + *top-- = *bottom--; + } + + /* zero the lower digits */ + top = a->dp; + for (x = 0; x < b; x++) { + *top++ = 0; + } + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_lshd.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mod.c b/crypto/userspace/libtommath/bn_mp_mod.c new file mode 100644 index 0000000..f5cf8d0 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mod.c @@ -0,0 +1,48 @@ +#include +#ifdef BN_MP_MOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* c = a mod b, 0 <= c < b */ +int +mp_mod (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int t; + int res; + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + if ((res = mp_div (a, b, NULL, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + + if (t.sign != b->sign) { + res = mp_add (b, &t, c); + } else { + res = MP_OKAY; + mp_exch (&t, c); + } + + mp_clear (&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mod_2d.c b/crypto/userspace/libtommath/bn_mp_mod_2d.c new file mode 100644 index 0000000..e194a06 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mod_2d.c @@ -0,0 +1,55 @@ +#include +#ifdef BN_MP_MOD_2D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* calc a value mod 2**b */ +int +mp_mod_2d (mp_int * a, int b, mp_int * c) +{ + int x, res; + + /* if b is <= 0 then zero the int */ + if (b <= 0) { + mp_zero (c); + return MP_OKAY; + } + + /* if the modulus is larger than the value than return */ + if (b >= (int) (a->used * DIGIT_BIT)) { + res = mp_copy (a, c); + return res; + } + + /* copy */ + if ((res = mp_copy (a, c)) != MP_OKAY) { + return res; + } + + /* zero digits above the last digit of the modulus */ + for (x = (b / DIGIT_BIT) + ((b % DIGIT_BIT) == 0 ? 0 : 1); x < c->used; x++) { + c->dp[x] = 0; + } + /* clear the digit that is not completely outside/inside the modulus */ + c->dp[b / DIGIT_BIT] &= + (mp_digit) ((((mp_digit) 1) << (((mp_digit) b) % DIGIT_BIT)) - ((mp_digit) 1)); + mp_clamp (c); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mod_2d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mod_d.c b/crypto/userspace/libtommath/bn_mp_mod_d.c new file mode 100644 index 0000000..9ca37e6 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mod_d.c @@ -0,0 +1,27 @@ +#include +#ifdef BN_MP_MOD_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +int +mp_mod_d (mp_int * a, mp_digit b, mp_digit * c) +{ + return mp_div_d(a, b, NULL, c); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mod_d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_montgomery_calc_normalization.c b/crypto/userspace/libtommath/bn_mp_montgomery_calc_normalization.c new file mode 100644 index 0000000..c669fe0 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_montgomery_calc_normalization.c @@ -0,0 +1,59 @@ +#include +#ifdef BN_MP_MONTGOMERY_CALC_NORMALIZATION_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* + * shifts with subtractions when the result is greater than b. + * + * The method is slightly modified to shift B unconditionally upto just under + * the leading bit of b. This saves alot of multiple precision shifting. + */ +int mp_montgomery_calc_normalization (mp_int * a, mp_int * b) +{ + int x, bits, res; + + /* how many bits of last digit does b use */ + bits = mp_count_bits (b) % DIGIT_BIT; + + if (b->used > 1) { + if ((res = mp_2expt (a, (b->used - 1) * DIGIT_BIT + bits - 1)) != MP_OKAY) { + return res; + } + } else { + mp_set(a, 1); + bits = 1; + } + + + /* now compute C = A * B mod b */ + for (x = bits - 1; x < (int)DIGIT_BIT; x++) { + if ((res = mp_mul_2 (a, a)) != MP_OKAY) { + return res; + } + if (mp_cmp_mag (a, b) != MP_LT) { + if ((res = s_mp_sub (a, b, a)) != MP_OKAY) { + return res; + } + } + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_montgomery_calc_normalization.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_montgomery_reduce.c b/crypto/userspace/libtommath/bn_mp_montgomery_reduce.c new file mode 100644 index 0000000..b765090 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_montgomery_reduce.c @@ -0,0 +1,118 @@ +#include +#ifdef BN_MP_MONTGOMERY_REDUCE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes xR**-1 == x (mod N) via Montgomery Reduction */ +int +mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho) +{ + int ix, res, digs; + mp_digit mu; + + /* can the fast reduction [comba] method be used? + * + * Note that unlike in mul you're safely allowed *less* + * than the available columns [255 per default] since carries + * are fixed up in the inner loop. + */ + digs = n->used * 2 + 1; + if ((digs < MP_WARRAY) && + n->used < + (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) { + return fast_mp_montgomery_reduce (x, n, rho); + } + + /* grow the input as required */ + if (x->alloc < digs) { + if ((res = mp_grow (x, digs)) != MP_OKAY) { + return res; + } + } + x->used = digs; + + for (ix = 0; ix < n->used; ix++) { + /* mu = ai * rho mod b + * + * The value of rho must be precalculated via + * montgomery_setup() such that + * it equals -1/n0 mod b this allows the + * following inner loop to reduce the + * input one digit at a time + */ + mu = (mp_digit) (((mp_word)x->dp[ix]) * ((mp_word)rho) & MP_MASK); + + /* a = a + mu * m * b**i */ + { + register int iy; + register mp_digit *tmpn, *tmpx, u; + register mp_word r; + + /* alias for digits of the modulus */ + tmpn = n->dp; + + /* alias for the digits of x [the input] */ + tmpx = x->dp + ix; + + /* set the carry to zero */ + u = 0; + + /* Multiply and add in place */ + for (iy = 0; iy < n->used; iy++) { + /* compute product and sum */ + r = ((mp_word)mu) * ((mp_word)*tmpn++) + + ((mp_word) u) + ((mp_word) * tmpx); + + /* get carry */ + u = (mp_digit)(r >> ((mp_word) DIGIT_BIT)); + + /* fix digit */ + *tmpx++ = (mp_digit)(r & ((mp_word) MP_MASK)); + } + /* At this point the ix'th digit of x should be zero */ + + + /* propagate carries upwards as required*/ + while (u) { + *tmpx += u; + u = *tmpx >> DIGIT_BIT; + *tmpx++ &= MP_MASK; + } + } + } + + /* at this point the n.used'th least + * significant digits of x are all zero + * which means we can shift x to the + * right by n.used digits and the + * residue is unchanged. + */ + + /* x = x/b**n.used */ + mp_clamp(x); + mp_rshd (x, n->used); + + /* if x >= n then x = x - n */ + if (mp_cmp_mag (x, n) != MP_LT) { + return s_mp_sub (x, n, x); + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_montgomery_reduce.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_montgomery_setup.c b/crypto/userspace/libtommath/bn_mp_montgomery_setup.c new file mode 100644 index 0000000..f082749 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_montgomery_setup.c @@ -0,0 +1,59 @@ +#include +#ifdef BN_MP_MONTGOMERY_SETUP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* setups the montgomery reduction stuff */ +int +mp_montgomery_setup (mp_int * n, mp_digit * rho) +{ + mp_digit x, b; + +/* fast inversion mod 2**k + * + * Based on the fact that + * + * XA = 1 (mod 2**n) => (X(2-XA)) A = 1 (mod 2**2n) + * => 2*X*A - X*X*A*A = 1 + * => 2*(1) - (1) = 1 + */ + b = n->dp[0]; + + if ((b & 1) == 0) { + return MP_VAL; + } + + x = (((b + 2) & 4) << 1) + b; /* here x*a==1 mod 2**4 */ + x *= 2 - b * x; /* here x*a==1 mod 2**8 */ +#if !defined(MP_8BIT) + x *= 2 - b * x; /* here x*a==1 mod 2**16 */ +#endif +#if defined(MP_64BIT) || !(defined(MP_8BIT) || defined(MP_16BIT)) + x *= 2 - b * x; /* here x*a==1 mod 2**32 */ +#endif +#ifdef MP_64BIT + x *= 2 - b * x; /* here x*a==1 mod 2**64 */ +#endif + + /* rho = -1/m mod b */ + *rho = (unsigned long)(((mp_word)1 << ((mp_word) DIGIT_BIT)) - x) & MP_MASK; + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_montgomery_setup.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mul.c b/crypto/userspace/libtommath/bn_mp_mul.c new file mode 100644 index 0000000..8b1117a --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mul.c @@ -0,0 +1,66 @@ +#include +#ifdef BN_MP_MUL_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* high level multiplication (handles sign) */ +int mp_mul (mp_int * a, mp_int * b, mp_int * c) +{ + int res, neg; + neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG; + + /* use Toom-Cook? */ +#ifdef BN_MP_TOOM_MUL_C + if (MIN (a->used, b->used) >= TOOM_MUL_CUTOFF) { + res = mp_toom_mul(a, b, c); + } else +#endif +#ifdef BN_MP_KARATSUBA_MUL_C + /* use Karatsuba? */ + if (MIN (a->used, b->used) >= KARATSUBA_MUL_CUTOFF) { + res = mp_karatsuba_mul (a, b, c); + } else +#endif + { + /* can we use the fast multiplier? + * + * The fast multiplier can be used if the output will + * have less than MP_WARRAY digits and the number of + * digits won't affect carry propagation + */ + int digs = a->used + b->used + 1; + +#ifdef BN_FAST_S_MP_MUL_DIGS_C + if ((digs < MP_WARRAY) && + MIN(a->used, b->used) <= + (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) { + res = fast_s_mp_mul_digs (a, b, c, digs); + } else +#endif +#ifdef BN_S_MP_MUL_DIGS_C + res = s_mp_mul (a, b, c); /* uses s_mp_mul_digs */ +#else + res = MP_VAL; +#endif + + } + c->sign = (c->used > 0) ? neg : MP_ZPOS; + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mul.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mul_2.c b/crypto/userspace/libtommath/bn_mp_mul_2.c new file mode 100644 index 0000000..02455fc --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mul_2.c @@ -0,0 +1,82 @@ +#include +#ifdef BN_MP_MUL_2_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* b = a*2 */ +int mp_mul_2(mp_int * a, mp_int * b) +{ + int x, res, oldused; + + /* grow to accomodate result */ + if (b->alloc < a->used + 1) { + if ((res = mp_grow (b, a->used + 1)) != MP_OKAY) { + return res; + } + } + + oldused = b->used; + b->used = a->used; + + { + register mp_digit r, rr, *tmpa, *tmpb; + + /* alias for source */ + tmpa = a->dp; + + /* alias for dest */ + tmpb = b->dp; + + /* carry */ + r = 0; + for (x = 0; x < a->used; x++) { + + /* get what will be the *next* carry bit from the + * MSB of the current digit + */ + rr = *tmpa >> ((mp_digit)(DIGIT_BIT - 1)); + + /* now shift up this digit, add in the carry [from the previous] */ + *tmpb++ = ((*tmpa++ << ((mp_digit)1)) | r) & MP_MASK; + + /* copy the carry that would be from the source + * digit into the next iteration + */ + r = rr; + } + + /* new leading digit? */ + if (r != 0) { + /* add a MSB which is always 1 at this point */ + *tmpb = 1; + ++(b->used); + } + + /* now zero any excess digits on the destination + * that we didn't write to + */ + tmpb = b->dp + b->used; + for (x = b->used; x < oldused; x++) { + *tmpb++ = 0; + } + } + b->sign = a->sign; + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mul_2.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mul_2d.c b/crypto/userspace/libtommath/bn_mp_mul_2d.c new file mode 100644 index 0000000..efeff2e --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mul_2d.c @@ -0,0 +1,85 @@ +#include +#ifdef BN_MP_MUL_2D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* shift left by a certain bit count */ +int mp_mul_2d (mp_int * a, int b, mp_int * c) +{ + mp_digit d; + int res; + + /* copy */ + if (a != c) { + if ((res = mp_copy (a, c)) != MP_OKAY) { + return res; + } + } + + if (c->alloc < (int)(c->used + b/DIGIT_BIT + 1)) { + if ((res = mp_grow (c, c->used + b / DIGIT_BIT + 1)) != MP_OKAY) { + return res; + } + } + + /* shift by as many digits in the bit count */ + if (b >= (int)DIGIT_BIT) { + if ((res = mp_lshd (c, b / DIGIT_BIT)) != MP_OKAY) { + return res; + } + } + + /* shift any bit count < DIGIT_BIT */ + d = (mp_digit) (b % DIGIT_BIT); + if (d != 0) { + register mp_digit *tmpc, shift, mask, r, rr; + register int x; + + /* bitmask for carries */ + mask = (((mp_digit)1) << d) - 1; + + /* shift for msbs */ + shift = DIGIT_BIT - d; + + /* alias */ + tmpc = c->dp; + + /* carry */ + r = 0; + for (x = 0; x < c->used; x++) { + /* get the higher bits of the current word */ + rr = (*tmpc >> shift) & mask; + + /* shift the current word and OR in the carry */ + *tmpc = ((*tmpc << d) | r) & MP_MASK; + ++tmpc; + + /* set the carry to the carry bits of the current word */ + r = rr; + } + + /* set final carry */ + if (r != 0) { + c->dp[(c->used)++] = r; + } + } + mp_clamp (c); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mul_2d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mul_d.c b/crypto/userspace/libtommath/bn_mp_mul_d.c new file mode 100644 index 0000000..00f9a89 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mul_d.c @@ -0,0 +1,79 @@ +#include +#ifdef BN_MP_MUL_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* multiply by a digit */ +int +mp_mul_d (mp_int * a, mp_digit b, mp_int * c) +{ + mp_digit u, *tmpa, *tmpc; + mp_word r; + int ix, res, olduse; + + /* make sure c is big enough to hold a*b */ + if (c->alloc < a->used + 1) { + if ((res = mp_grow (c, a->used + 1)) != MP_OKAY) { + return res; + } + } + + /* get the original destinations used count */ + olduse = c->used; + + /* set the sign */ + c->sign = a->sign; + + /* alias for a->dp [source] */ + tmpa = a->dp; + + /* alias for c->dp [dest] */ + tmpc = c->dp; + + /* zero carry */ + u = 0; + + /* compute columns */ + for (ix = 0; ix < a->used; ix++) { + /* compute product and carry sum for this term */ + r = ((mp_word) u) + ((mp_word)*tmpa++) * ((mp_word)b); + + /* mask off higher bits to get a single digit */ + *tmpc++ = (mp_digit) (r & ((mp_word) MP_MASK)); + + /* send carry into next iteration */ + u = (mp_digit) (r >> ((mp_word) DIGIT_BIT)); + } + + /* store final carry [if any] and increment ix offset */ + *tmpc++ = u; + ++ix; + + /* now zero digits above the top */ + while (ix++ < olduse) { + *tmpc++ = 0; + } + + /* set used count */ + c->used = a->used + 1; + mp_clamp(c); + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mul_d.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_mulmod.c b/crypto/userspace/libtommath/bn_mp_mulmod.c new file mode 100644 index 0000000..003ceb9 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_mulmod.c @@ -0,0 +1,40 @@ +#include +#ifdef BN_MP_MULMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* d = a * b (mod c) */ +int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d) +{ + int res; + mp_int t; + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + if ((res = mp_mul (a, b, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + res = mp_mod (&t, c, d); + mp_clear (&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_mulmod.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_n_root.c b/crypto/userspace/libtommath/bn_mp_n_root.c new file mode 100644 index 0000000..0e7bedc --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_n_root.c @@ -0,0 +1,132 @@ +#include +#ifdef BN_MP_N_ROOT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* find the n'th root of an integer + * + * Result found such that (c)**b <= a and (c+1)**b > a + * + * This algorithm uses Newton's approximation + * x[i+1] = x[i] - f(x[i])/f'(x[i]) + * which will find the root in log(N) time where + * each step involves a fair bit. This is not meant to + * find huge roots [square and cube, etc]. + */ +int mp_n_root (mp_int * a, mp_digit b, mp_int * c) +{ + mp_int t1, t2, t3; + int res, neg; + + /* input must be positive if b is even */ + if ((b & 1) == 0 && a->sign == MP_NEG) { + return MP_VAL; + } + + if ((res = mp_init (&t1)) != MP_OKAY) { + return res; + } + + if ((res = mp_init (&t2)) != MP_OKAY) { + goto LBL_T1; + } + + if ((res = mp_init (&t3)) != MP_OKAY) { + goto LBL_T2; + } + + /* if a is negative fudge the sign but keep track */ + neg = a->sign; + a->sign = MP_ZPOS; + + /* t2 = 2 */ + mp_set (&t2, 2); + + do { + /* t1 = t2 */ + if ((res = mp_copy (&t2, &t1)) != MP_OKAY) { + goto LBL_T3; + } + + /* t2 = t1 - ((t1**b - a) / (b * t1**(b-1))) */ + + /* t3 = t1**(b-1) */ + if ((res = mp_expt_d (&t1, b - 1, &t3)) != MP_OKAY) { + goto LBL_T3; + } + + /* numerator */ + /* t2 = t1**b */ + if ((res = mp_mul (&t3, &t1, &t2)) != MP_OKAY) { + goto LBL_T3; + } + + /* t2 = t1**b - a */ + if ((res = mp_sub (&t2, a, &t2)) != MP_OKAY) { + goto LBL_T3; + } + + /* denominator */ + /* t3 = t1**(b-1) * b */ + if ((res = mp_mul_d (&t3, b, &t3)) != MP_OKAY) { + goto LBL_T3; + } + + /* t3 = (t1**b - a)/(b * t1**(b-1)) */ + if ((res = mp_div (&t2, &t3, &t3, NULL)) != MP_OKAY) { + goto LBL_T3; + } + + if ((res = mp_sub (&t1, &t3, &t2)) != MP_OKAY) { + goto LBL_T3; + } + } while (mp_cmp (&t1, &t2) != MP_EQ); + + /* result can be off by a few so check */ + for (;;) { + if ((res = mp_expt_d (&t1, b, &t2)) != MP_OKAY) { + goto LBL_T3; + } + + if (mp_cmp (&t2, a) == MP_GT) { + if ((res = mp_sub_d (&t1, 1, &t1)) != MP_OKAY) { + goto LBL_T3; + } + } else { + break; + } + } + + /* reset the sign of a first */ + a->sign = neg; + + /* set the result */ + mp_exch (&t1, c); + + /* set the sign of the result */ + c->sign = neg; + + res = MP_OKAY; + +LBL_T3:mp_clear (&t3); +LBL_T2:mp_clear (&t2); +LBL_T1:mp_clear (&t1); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_n_root.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_neg.c b/crypto/userspace/libtommath/bn_mp_neg.c new file mode 100644 index 0000000..a7d035a --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_neg.c @@ -0,0 +1,40 @@ +#include +#ifdef BN_MP_NEG_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* b = -a */ +int mp_neg (mp_int * a, mp_int * b) +{ + int res; + if (a != b) { + if ((res = mp_copy (a, b)) != MP_OKAY) { + return res; + } + } + + if (mp_iszero(b) != MP_YES) { + b->sign = (a->sign == MP_ZPOS) ? MP_NEG : MP_ZPOS; + } else { + b->sign = MP_ZPOS; + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_neg.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_or.c b/crypto/userspace/libtommath/bn_mp_or.c new file mode 100644 index 0000000..bff4995 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_or.c @@ -0,0 +1,50 @@ +#include +#ifdef BN_MP_OR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* OR two ints together */ +int mp_or (mp_int * a, mp_int * b, mp_int * c) +{ + int res, ix, px; + mp_int t, *x; + + if (a->used > b->used) { + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + px = b->used; + x = b; + } else { + if ((res = mp_init_copy (&t, b)) != MP_OKAY) { + return res; + } + px = a->used; + x = a; + } + + for (ix = 0; ix < px; ix++) { + t.dp[ix] |= x->dp[ix]; + } + mp_clamp (&t); + mp_exch (c, &t); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_or.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_fermat.c b/crypto/userspace/libtommath/bn_mp_prime_fermat.c new file mode 100644 index 0000000..c23d77f --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_fermat.c @@ -0,0 +1,62 @@ +#include +#ifdef BN_MP_PRIME_FERMAT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* performs one Fermat test. + * + * If "a" were prime then b**a == b (mod a) since the order of + * the multiplicative sub-group would be phi(a) = a-1. That means + * it would be the same as b**(a mod (a-1)) == b**1 == b (mod a). + * + * Sets result to 1 if the congruence holds, or zero otherwise. + */ +int mp_prime_fermat (mp_int * a, mp_int * b, int *result) +{ + mp_int t; + int err; + + /* default to composite */ + *result = MP_NO; + + /* ensure b > 1 */ + if (mp_cmp_d(b, 1) != MP_GT) { + return MP_VAL; + } + + /* init t */ + if ((err = mp_init (&t)) != MP_OKAY) { + return err; + } + + /* compute t = b**a mod a */ + if ((err = mp_exptmod (b, a, a, &t)) != MP_OKAY) { + goto LBL_T; + } + + /* is it equal to b? */ + if (mp_cmp (&t, b) == MP_EQ) { + *result = MP_YES; + } + + err = MP_OKAY; +LBL_T:mp_clear (&t); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_fermat.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_is_divisible.c b/crypto/userspace/libtommath/bn_mp_prime_is_divisible.c new file mode 100644 index 0000000..8e7871c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_is_divisible.c @@ -0,0 +1,50 @@ +#include +#ifdef BN_MP_PRIME_IS_DIVISIBLE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines if an integers is divisible by one + * of the first PRIME_SIZE primes or not + * + * sets result to 0 if not, 1 if yes + */ +int mp_prime_is_divisible (mp_int * a, int *result) +{ + int err, ix; + mp_digit res; + + /* default to not */ + *result = MP_NO; + + for (ix = 0; ix < PRIME_SIZE; ix++) { + /* what is a mod LBL_prime_tab[ix] */ + if ((err = mp_mod_d (a, ltm_prime_tab[ix], &res)) != MP_OKAY) { + return err; + } + + /* is the residue zero? */ + if (res == 0) { + *result = MP_YES; + return MP_OKAY; + } + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_is_divisible.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_is_prime.c b/crypto/userspace/libtommath/bn_mp_prime_is_prime.c new file mode 100644 index 0000000..c316d62 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_is_prime.c @@ -0,0 +1,83 @@ +#include +#ifdef BN_MP_PRIME_IS_PRIME_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* performs a variable number of rounds of Miller-Rabin + * + * Probability of error after t rounds is no more than + + * + * Sets result to 1 if probably prime, 0 otherwise + */ +int mp_prime_is_prime (mp_int * a, int t, int *result) +{ + mp_int b; + int ix, err, res; + + /* default to no */ + *result = MP_NO; + + /* valid value of t? */ + if (t <= 0 || t > PRIME_SIZE) { + return MP_VAL; + } + + /* is the input equal to one of the primes in the table? */ + for (ix = 0; ix < PRIME_SIZE; ix++) { + if (mp_cmp_d(a, ltm_prime_tab[ix]) == MP_EQ) { + *result = 1; + return MP_OKAY; + } + } + + /* first perform trial division */ + if ((err = mp_prime_is_divisible (a, &res)) != MP_OKAY) { + return err; + } + + /* return if it was trivially divisible */ + if (res == MP_YES) { + return MP_OKAY; + } + + /* now perform the miller-rabin rounds */ + if ((err = mp_init (&b)) != MP_OKAY) { + return err; + } + + for (ix = 0; ix < t; ix++) { + /* set the prime */ + mp_set (&b, ltm_prime_tab[ix]); + + if ((err = mp_prime_miller_rabin (a, &b, &res)) != MP_OKAY) { + goto LBL_B; + } + + if (res == MP_NO) { + goto LBL_B; + } + } + + /* passed the test */ + *result = MP_YES; +LBL_B:mp_clear (&b); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_is_prime.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_miller_rabin.c b/crypto/userspace/libtommath/bn_mp_prime_miller_rabin.c new file mode 100644 index 0000000..ddf0358 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_miller_rabin.c @@ -0,0 +1,103 @@ +#include +#ifdef BN_MP_PRIME_MILLER_RABIN_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Miller-Rabin test of "a" to the base of "b" as described in + * HAC pp. 139 Algorithm 4.24 + * + * Sets result to 0 if definitely composite or 1 if probably prime. + * Randomly the chance of error is no more than 1/4 and often + * very much lower. + */ +int mp_prime_miller_rabin (mp_int * a, mp_int * b, int *result) +{ + mp_int n1, y, r; + int s, j, err; + + /* default */ + *result = MP_NO; + + /* ensure b > 1 */ + if (mp_cmp_d(b, 1) != MP_GT) { + return MP_VAL; + } + + /* get n1 = a - 1 */ + if ((err = mp_init_copy (&n1, a)) != MP_OKAY) { + return err; + } + if ((err = mp_sub_d (&n1, 1, &n1)) != MP_OKAY) { + goto LBL_N1; + } + + /* set 2**s * r = n1 */ + if ((err = mp_init_copy (&r, &n1)) != MP_OKAY) { + goto LBL_N1; + } + + /* count the number of least significant bits + * which are zero + */ + s = mp_cnt_lsb(&r); + + /* now divide n - 1 by 2**s */ + if ((err = mp_div_2d (&r, s, &r, NULL)) != MP_OKAY) { + goto LBL_R; + } + + /* compute y = b**r mod a */ + if ((err = mp_init (&y)) != MP_OKAY) { + goto LBL_R; + } + if ((err = mp_exptmod (b, &r, a, &y)) != MP_OKAY) { + goto LBL_Y; + } + + /* if y != 1 and y != n1 do */ + if (mp_cmp_d (&y, 1) != MP_EQ && mp_cmp (&y, &n1) != MP_EQ) { + j = 1; + /* while j <= s-1 and y != n1 */ + while ((j <= (s - 1)) && mp_cmp (&y, &n1) != MP_EQ) { + if ((err = mp_sqrmod (&y, a, &y)) != MP_OKAY) { + goto LBL_Y; + } + + /* if y == 1 then composite */ + if (mp_cmp_d (&y, 1) == MP_EQ) { + goto LBL_Y; + } + + ++j; + } + + /* if y != n1 then composite */ + if (mp_cmp (&y, &n1) != MP_EQ) { + goto LBL_Y; + } + } + + /* probably prime now */ + *result = MP_YES; +LBL_Y:mp_clear (&y); +LBL_R:mp_clear (&r); +LBL_N1:mp_clear (&n1); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_miller_rabin.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_next_prime.c b/crypto/userspace/libtommath/bn_mp_prime_next_prime.c new file mode 100644 index 0000000..daf2ec7 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_next_prime.c @@ -0,0 +1,170 @@ +#include +#ifdef BN_MP_PRIME_NEXT_PRIME_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* finds the next prime after the number "a" using "t" trials + * of Miller-Rabin. + * + * bbs_style = 1 means the prime must be congruent to 3 mod 4 + */ +int mp_prime_next_prime(mp_int *a, int t, int bbs_style) +{ + int err, res, x, y; + mp_digit res_tab[PRIME_SIZE], step, kstep; + mp_int b; + + /* ensure t is valid */ + if (t <= 0 || t > PRIME_SIZE) { + return MP_VAL; + } + + /* force positive */ + a->sign = MP_ZPOS; + + /* simple algo if a is less than the largest prime in the table */ + if (mp_cmp_d(a, ltm_prime_tab[PRIME_SIZE-1]) == MP_LT) { + /* find which prime it is bigger than */ + for (x = PRIME_SIZE - 2; x >= 0; x--) { + if (mp_cmp_d(a, ltm_prime_tab[x]) != MP_LT) { + if (bbs_style == 1) { + /* ok we found a prime smaller or + * equal [so the next is larger] + * + * however, the prime must be + * congruent to 3 mod 4 + */ + if ((ltm_prime_tab[x + 1] & 3) != 3) { + /* scan upwards for a prime congruent to 3 mod 4 */ + for (y = x + 1; y < PRIME_SIZE; y++) { + if ((ltm_prime_tab[y] & 3) == 3) { + mp_set(a, ltm_prime_tab[y]); + return MP_OKAY; + } + } + } + } else { + mp_set(a, ltm_prime_tab[x + 1]); + return MP_OKAY; + } + } + } + /* at this point a maybe 1 */ + if (mp_cmp_d(a, 1) == MP_EQ) { + mp_set(a, 2); + return MP_OKAY; + } + /* fall through to the sieve */ + } + + /* generate a prime congruent to 3 mod 4 or 1/3 mod 4? */ + if (bbs_style == 1) { + kstep = 4; + } else { + kstep = 2; + } + + /* at this point we will use a combination of a sieve and Miller-Rabin */ + + if (bbs_style == 1) { + /* if a mod 4 != 3 subtract the correct value to make it so */ + if ((a->dp[0] & 3) != 3) { + if ((err = mp_sub_d(a, (a->dp[0] & 3) + 1, a)) != MP_OKAY) { return err; }; + } + } else { + if (mp_iseven(a) == 1) { + /* force odd */ + if ((err = mp_sub_d(a, 1, a)) != MP_OKAY) { + return err; + } + } + } + + /* generate the restable */ + for (x = 1; x < PRIME_SIZE; x++) { + if ((err = mp_mod_d(a, ltm_prime_tab[x], res_tab + x)) != MP_OKAY) { + return err; + } + } + + /* init temp used for Miller-Rabin Testing */ + if ((err = mp_init(&b)) != MP_OKAY) { + return err; + } + + for (;;) { + /* skip to the next non-trivially divisible candidate */ + step = 0; + do { + /* y == 1 if any residue was zero [e.g. cannot be prime] */ + y = 0; + + /* increase step to next candidate */ + step += kstep; + + /* compute the new residue without using division */ + for (x = 1; x < PRIME_SIZE; x++) { + /* add the step to each residue */ + res_tab[x] += kstep; + + /* subtract the modulus [instead of using division] */ + if (res_tab[x] >= ltm_prime_tab[x]) { + res_tab[x] -= ltm_prime_tab[x]; + } + + /* set flag if zero */ + if (res_tab[x] == 0) { + y = 1; + } + } + } while (y == 1 && step < ((((mp_digit)1)<= ((((mp_digit)1)< +#ifdef BN_MP_PRIME_RABIN_MILLER_TRIALS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + + +static const struct { + int k, t; +} sizes[] = { +{ 128, 28 }, +{ 256, 16 }, +{ 384, 10 }, +{ 512, 7 }, +{ 640, 6 }, +{ 768, 5 }, +{ 896, 4 }, +{ 1024, 4 } +}; + +/* returns # of RM trials required for a given bit size */ +int mp_prime_rabin_miller_trials(int size) +{ + int x; + + for (x = 0; x < (int)(sizeof(sizes)/(sizeof(sizes[0]))); x++) { + if (sizes[x].k == size) { + return sizes[x].t; + } else if (sizes[x].k > size) { + return (x == 0) ? sizes[0].t : sizes[x - 1].t; + } + } + return sizes[x-1].t + 1; +} + + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_rabin_miller_trials.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_prime_random_ex.c b/crypto/userspace/libtommath/bn_mp_prime_random_ex.c new file mode 100644 index 0000000..741bfd1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_prime_random_ex.c @@ -0,0 +1,126 @@ +#include +#include +#ifdef BN_MP_PRIME_RANDOM_EX_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* makes a truly random prime of a given size (bits), + * + * Flags are as follows: + * + * LTM_PRIME_BBS - make prime congruent to 3 mod 4 + * LTM_PRIME_SAFE - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS) + * LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero + * LTM_PRIME_2MSB_ON - make the 2nd highest bit one + * + * You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can + * have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself + * so it can be NULL + * + */ + +/* This is possibly the mother of all prime generation functions, muahahahahaha! */ +int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat) +{ + unsigned char *tmp, maskAND, maskOR_msb, maskOR_lsb; + int res, err, bsize, maskOR_msb_offset; + + /* sanity check the input */ + if (size <= 1 || t <= 0) { + return MP_VAL; + } + + /* LTM_PRIME_SAFE implies LTM_PRIME_BBS */ + if (flags & LTM_PRIME_SAFE) { + flags |= LTM_PRIME_BBS; + } + + /* calc the byte size */ + bsize = (size>>3) + ((size&7)?1:0); + + /* we need a buffer of bsize bytes */ + tmp = OPT_CAST(unsigned char) XMALLOC(bsize); + if (tmp == NULL) { + return MP_MEM; + } + + /* calc the maskAND value for the MSbyte*/ + maskAND = ((size&7) == 0) ? 0xFF : (0xFF >> (8 - (size & 7))); + + /* calc the maskOR_msb */ + maskOR_msb = 0; + maskOR_msb_offset = ((size & 7) == 1) ? 1 : 0; + if (flags & LTM_PRIME_2MSB_ON) { + maskOR_msb |= 0x80 >> ((9 - size) & 7); + } + + /* get the maskOR_lsb */ + maskOR_lsb = 1; + if (flags & LTM_PRIME_BBS) { + maskOR_lsb |= 3; + } + + do { + /* read the bytes */ + if (cb(tmp, bsize, dat) != bsize) { + err = MP_VAL; + goto error; + } + + /* work over the MSbyte */ + tmp[0] &= maskAND; + tmp[0] |= 1 << ((size - 1) & 7); + + /* mix in the maskORs */ + tmp[maskOR_msb_offset] |= maskOR_msb; + tmp[bsize-1] |= maskOR_lsb; + + /* read it in */ + if ((err = mp_read_unsigned_bin(a, tmp, bsize)) != MP_OKAY) { goto error; } + + /* is it prime? */ + if ((err = mp_prime_is_prime(a, t, &res)) != MP_OKAY) { goto error; } + if (res == MP_NO) { + continue; + } + + if (flags & LTM_PRIME_SAFE) { + /* see if (a-1)/2 is prime */ + if ((err = mp_sub_d(a, 1, a)) != MP_OKAY) { goto error; } + if ((err = mp_div_2(a, a)) != MP_OKAY) { goto error; } + + /* is it prime? */ + if ((err = mp_prime_is_prime(a, t, &res)) != MP_OKAY) { goto error; } + } + } while (res == MP_NO); + + if (flags & LTM_PRIME_SAFE) { + /* restore a to the original value */ + if ((err = mp_mul_2(a, a)) != MP_OKAY) { goto error; } + if ((err = mp_add_d(a, 1, a)) != MP_OKAY) { goto error; } + } + + err = MP_OKAY; +error: + XFREE(tmp); + return err; +} + + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_prime_random_ex.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_radix_size.c b/crypto/userspace/libtommath/bn_mp_radix_size.c new file mode 100644 index 0000000..1b61e3a --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_radix_size.c @@ -0,0 +1,78 @@ +#include +#ifdef BN_MP_RADIX_SIZE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* returns size of ASCII reprensentation */ +int mp_radix_size (mp_int * a, int radix, int *size) +{ + int res, digs; + mp_int t; + mp_digit d; + + *size = 0; + + /* special case for binary */ + if (radix == 2) { + *size = mp_count_bits (a) + (a->sign == MP_NEG ? 1 : 0) + 1; + return MP_OKAY; + } + + /* make sure the radix is in range */ + if (radix < 2 || radix > 64) { + return MP_VAL; + } + + if (mp_iszero(a) == MP_YES) { + *size = 2; + return MP_OKAY; + } + + /* digs is the digit count */ + digs = 0; + + /* if it's negative add one for the sign */ + if (a->sign == MP_NEG) { + ++digs; + } + + /* init a copy of the input */ + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + + /* force temp to positive */ + t.sign = MP_ZPOS; + + /* fetch out all of the digits */ + while (mp_iszero (&t) == MP_NO) { + if ((res = mp_div_d (&t, (mp_digit) radix, &t, &d)) != MP_OKAY) { + mp_clear (&t); + return res; + } + ++digs; + } + mp_clear (&t); + + /* return digs + 1, the 1 is for the NULL byte that would be required. */ + *size = digs + 1; + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_radix_size.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_radix_smap.c b/crypto/userspace/libtommath/bn_mp_radix_smap.c new file mode 100644 index 0000000..7d72feb --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_radix_smap.c @@ -0,0 +1,24 @@ +#include +#ifdef BN_MP_RADIX_SMAP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* chars used in radix conversions */ +const char *mp_s_rmap = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/"; +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_radix_smap.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_rand.c b/crypto/userspace/libtommath/bn_mp_rand.c new file mode 100644 index 0000000..af66a67 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_rand.c @@ -0,0 +1,55 @@ +#include +#ifdef BN_MP_RAND_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* makes a pseudo-random int of a given size */ +int +mp_rand (mp_int * a, int digits) +{ + int res; + mp_digit d; + + mp_zero (a); + if (digits <= 0) { + return MP_OKAY; + } + + /* first place a random non-zero digit */ + do { + d = ((mp_digit) abs (rand ())) & MP_MASK; + } while (d == 0); + + if ((res = mp_add_d (a, d, a)) != MP_OKAY) { + return res; + } + + while (--digits > 0) { + if ((res = mp_lshd (a, 1)) != MP_OKAY) { + return res; + } + + if ((res = mp_add_d (a, ((mp_digit) abs (rand ())), a)) != MP_OKAY) { + return res; + } + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_rand.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_read_radix.c b/crypto/userspace/libtommath/bn_mp_read_radix.c new file mode 100644 index 0000000..91c46c2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_read_radix.c @@ -0,0 +1,85 @@ +#include +#ifdef BN_MP_READ_RADIX_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* read a string [ASCII] in a given radix */ +int mp_read_radix (mp_int * a, const char *str, int radix) +{ + int y, res, neg; + char ch; + + /* zero the digit bignum */ + mp_zero(a); + + /* make sure the radix is ok */ + if (radix < 2 || radix > 64) { + return MP_VAL; + } + + /* if the leading digit is a + * minus set the sign to negative. + */ + if (*str == '-') { + ++str; + neg = MP_NEG; + } else { + neg = MP_ZPOS; + } + + /* set the integer to the default of zero */ + mp_zero (a); + + /* process each digit of the string */ + while (*str) { + /* if the radix < 36 the conversion is case insensitive + * this allows numbers like 1AB and 1ab to represent the same value + * [e.g. in hex] + */ + ch = (char) ((radix < 36) ? toupper (*str) : *str); + for (y = 0; y < 64; y++) { + if (ch == mp_s_rmap[y]) { + break; + } + } + + /* if the char was found in the map + * and is less than the given radix add it + * to the number, otherwise exit the loop. + */ + if (y < radix) { + if ((res = mp_mul_d (a, (mp_digit) radix, a)) != MP_OKAY) { + return res; + } + if ((res = mp_add_d (a, (mp_digit) y, a)) != MP_OKAY) { + return res; + } + } else { + break; + } + ++str; + } + + /* set the sign only if a != 0 */ + if (mp_iszero(a) != 1) { + a->sign = neg; + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_read_radix.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_read_signed_bin.c b/crypto/userspace/libtommath/bn_mp_read_signed_bin.c new file mode 100644 index 0000000..8da651c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_read_signed_bin.c @@ -0,0 +1,41 @@ +#include +#ifdef BN_MP_READ_SIGNED_BIN_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* read signed bin, big endian, first byte is 0==positive or 1==negative */ +int mp_read_signed_bin (mp_int * a, const unsigned char *b, int c) +{ + int res; + + /* read magnitude */ + if ((res = mp_read_unsigned_bin (a, b + 1, c - 1)) != MP_OKAY) { + return res; + } + + /* first byte is 0 for positive, non-zero for negative */ + if (b[0] == 0) { + a->sign = MP_ZPOS; + } else { + a->sign = MP_NEG; + } + + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_read_signed_bin.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_read_unsigned_bin.c b/crypto/userspace/libtommath/bn_mp_read_unsigned_bin.c new file mode 100644 index 0000000..1ebba13 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_read_unsigned_bin.c @@ -0,0 +1,55 @@ +#include +#ifdef BN_MP_READ_UNSIGNED_BIN_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reads a unsigned char array, assumes the msb is stored first [big endian] */ +int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c) +{ + int res; + + /* make sure there are at least two digits */ + if (a->alloc < 2) { + if ((res = mp_grow(a, 2)) != MP_OKAY) { + return res; + } + } + + /* zero the int */ + mp_zero (a); + + /* read the bytes in */ + while (c-- > 0) { + if ((res = mp_mul_2d (a, 8, a)) != MP_OKAY) { + return res; + } + +#ifndef MP_8BIT + a->dp[0] |= *b++; + a->used += 1; +#else + a->dp[0] = (*b & MP_MASK); + a->dp[1] |= ((*b++ >> 7U) & 1); + a->used += 2; +#endif + } + mp_clamp (a); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_read_unsigned_bin.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce.c b/crypto/userspace/libtommath/bn_mp_reduce.c new file mode 100644 index 0000000..21d0730 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce.c @@ -0,0 +1,100 @@ +#include +#ifdef BN_MP_REDUCE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reduces x mod m, assumes 0 < x < m**2, mu is + * precomputed via mp_reduce_setup. + * From HAC pp.604 Algorithm 14.42 + */ +int mp_reduce (mp_int * x, mp_int * m, mp_int * mu) +{ + mp_int q; + int res, um = m->used; + + /* q = x */ + if ((res = mp_init_copy (&q, x)) != MP_OKAY) { + return res; + } + + /* q1 = x / b**(k-1) */ + mp_rshd (&q, um - 1); + + /* according to HAC this optimization is ok */ + if (((unsigned long) um) > (((mp_digit)1) << (DIGIT_BIT - 1))) { + if ((res = mp_mul (&q, mu, &q)) != MP_OKAY) { + goto CLEANUP; + } + } else { +#ifdef BN_S_MP_MUL_HIGH_DIGS_C + if ((res = s_mp_mul_high_digs (&q, mu, &q, um)) != MP_OKAY) { + goto CLEANUP; + } +#elif defined(BN_FAST_S_MP_MUL_HIGH_DIGS_C) + if ((res = fast_s_mp_mul_high_digs (&q, mu, &q, um)) != MP_OKAY) { + goto CLEANUP; + } +#else + { + res = MP_VAL; + goto CLEANUP; + } +#endif + } + + /* q3 = q2 / b**(k+1) */ + mp_rshd (&q, um + 1); + + /* x = x mod b**(k+1), quick (no division) */ + if ((res = mp_mod_2d (x, DIGIT_BIT * (um + 1), x)) != MP_OKAY) { + goto CLEANUP; + } + + /* q = q * m mod b**(k+1), quick (no division) */ + if ((res = s_mp_mul_digs (&q, m, &q, um + 1)) != MP_OKAY) { + goto CLEANUP; + } + + /* x = x - q */ + if ((res = mp_sub (x, &q, x)) != MP_OKAY) { + goto CLEANUP; + } + + /* If x < 0, add b**(k+1) to it */ + if (mp_cmp_d (x, 0) == MP_LT) { + mp_set (&q, 1); + if ((res = mp_lshd (&q, um + 1)) != MP_OKAY) + goto CLEANUP; + if ((res = mp_add (x, &q, x)) != MP_OKAY) + goto CLEANUP; + } + + /* Back off if it's too big */ + while (mp_cmp (x, m) != MP_LT) { + if ((res = s_mp_sub (x, m, x)) != MP_OKAY) { + goto CLEANUP; + } + } + +CLEANUP: + mp_clear (&q); + + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_2k.c b/crypto/userspace/libtommath/bn_mp_reduce_2k.c new file mode 100644 index 0000000..d9620c2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_2k.c @@ -0,0 +1,61 @@ +#include +#ifdef BN_MP_REDUCE_2K_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reduces a modulo n where n is of the form 2**p - d */ +int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d) +{ + mp_int q; + int p, res; + + if ((res = mp_init(&q)) != MP_OKAY) { + return res; + } + + p = mp_count_bits(n); +top: + /* q = a/2**p, a = a mod 2**p */ + if ((res = mp_div_2d(a, p, &q, a)) != MP_OKAY) { + goto ERR; + } + + if (d != 1) { + /* q = q * d */ + if ((res = mp_mul_d(&q, d, &q)) != MP_OKAY) { + goto ERR; + } + } + + /* a = a + q */ + if ((res = s_mp_add(a, &q, a)) != MP_OKAY) { + goto ERR; + } + + if (mp_cmp_mag(a, n) != MP_LT) { + s_mp_sub(a, n, a); + goto top; + } + +ERR: + mp_clear(&q); + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_2k.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_2k_l.c b/crypto/userspace/libtommath/bn_mp_reduce_2k_l.c new file mode 100644 index 0000000..f06103d --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_2k_l.c @@ -0,0 +1,62 @@ +#include +#ifdef BN_MP_REDUCE_2K_L_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reduces a modulo n where n is of the form 2**p - d + This differs from reduce_2k since "d" can be larger + than a single digit. +*/ +int mp_reduce_2k_l(mp_int *a, mp_int *n, mp_int *d) +{ + mp_int q; + int p, res; + + if ((res = mp_init(&q)) != MP_OKAY) { + return res; + } + + p = mp_count_bits(n); +top: + /* q = a/2**p, a = a mod 2**p */ + if ((res = mp_div_2d(a, p, &q, a)) != MP_OKAY) { + goto ERR; + } + + /* q = q * d */ + if ((res = mp_mul(&q, d, &q)) != MP_OKAY) { + goto ERR; + } + + /* a = a + q */ + if ((res = s_mp_add(a, &q, a)) != MP_OKAY) { + goto ERR; + } + + if (mp_cmp_mag(a, n) != MP_LT) { + s_mp_sub(a, n, a); + goto top; + } + +ERR: + mp_clear(&q); + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_2k_l.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_2k_setup.c b/crypto/userspace/libtommath/bn_mp_reduce_2k_setup.c new file mode 100644 index 0000000..a80e7a2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_2k_setup.c @@ -0,0 +1,47 @@ +#include +#ifdef BN_MP_REDUCE_2K_SETUP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines the setup value */ +int mp_reduce_2k_setup(mp_int *a, mp_digit *d) +{ + int res, p; + mp_int tmp; + + if ((res = mp_init(&tmp)) != MP_OKAY) { + return res; + } + + p = mp_count_bits(a); + if ((res = mp_2expt(&tmp, p)) != MP_OKAY) { + mp_clear(&tmp); + return res; + } + + if ((res = s_mp_sub(&tmp, a, &tmp)) != MP_OKAY) { + mp_clear(&tmp); + return res; + } + + *d = tmp.dp[0]; + mp_clear(&tmp); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_2k_setup.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_2k_setup_l.c b/crypto/userspace/libtommath/bn_mp_reduce_2k_setup_l.c new file mode 100644 index 0000000..7cf002e --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_2k_setup_l.c @@ -0,0 +1,44 @@ +#include +#ifdef BN_MP_REDUCE_2K_SETUP_L_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines the setup value */ +int mp_reduce_2k_setup_l(mp_int *a, mp_int *d) +{ + int res; + mp_int tmp; + + if ((res = mp_init(&tmp)) != MP_OKAY) { + return res; + } + + if ((res = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) { + goto ERR; + } + + if ((res = s_mp_sub(&tmp, a, d)) != MP_OKAY) { + goto ERR; + } + +ERR: + mp_clear(&tmp); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_2k_setup_l.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_is_2k.c b/crypto/userspace/libtommath/bn_mp_reduce_is_2k.c new file mode 100644 index 0000000..7308be7 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_is_2k.c @@ -0,0 +1,52 @@ +#include +#ifdef BN_MP_REDUCE_IS_2K_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines if mp_reduce_2k can be used */ +int mp_reduce_is_2k(mp_int *a) +{ + int ix, iy, iw; + mp_digit iz; + + if (a->used == 0) { + return MP_NO; + } else if (a->used == 1) { + return MP_YES; + } else if (a->used > 1) { + iy = mp_count_bits(a); + iz = 1; + iw = 1; + + /* Test every bit from the second digit up, must be 1 */ + for (ix = DIGIT_BIT; ix < iy; ix++) { + if ((a->dp[iw] & iz) == 0) { + return MP_NO; + } + iz <<= 1; + if (iz > (mp_digit)MP_MASK) { + ++iw; + iz = 1; + } + } + } + return MP_YES; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_is_2k.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_is_2k_l.c b/crypto/userspace/libtommath/bn_mp_reduce_is_2k_l.c new file mode 100644 index 0000000..14a4d21 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_is_2k_l.c @@ -0,0 +1,44 @@ +#include +#ifdef BN_MP_REDUCE_IS_2K_L_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines if reduce_2k_l can be used */ +int mp_reduce_is_2k_l(mp_int *a) +{ + int ix, iy; + + if (a->used == 0) { + return MP_NO; + } else if (a->used == 1) { + return MP_YES; + } else if (a->used > 1) { + /* if more than half of the digits are -1 we're sold */ + for (iy = ix = 0; ix < a->used; ix++) { + if (a->dp[ix] == MP_MASK) { + ++iy; + } + } + return (iy >= (a->used/2)) ? MP_YES : MP_NO; + + } + return MP_NO; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_is_2k_l.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_reduce_setup.c b/crypto/userspace/libtommath/bn_mp_reduce_setup.c new file mode 100644 index 0000000..370f20b --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_reduce_setup.c @@ -0,0 +1,34 @@ +#include +#ifdef BN_MP_REDUCE_SETUP_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* pre-calculate the value required for Barrett reduction + * For a given modulus "b" it calulates the value required in "a" + */ +int mp_reduce_setup (mp_int * a, mp_int * b) +{ + int res; + + if ((res = mp_2expt (a, b->used * 2 * DIGIT_BIT)) != MP_OKAY) { + return res; + } + return mp_div (a, b, a, NULL); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_reduce_setup.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_rshd.c b/crypto/userspace/libtommath/bn_mp_rshd.c new file mode 100644 index 0000000..2a693c5 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_rshd.c @@ -0,0 +1,72 @@ +#include +#ifdef BN_MP_RSHD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* shift right a certain amount of digits */ +void mp_rshd (mp_int * a, int b) +{ + int x; + + /* if b <= 0 then ignore it */ + if (b <= 0) { + return; + } + + /* if b > used then simply zero it and return */ + if (a->used <= b) { + mp_zero (a); + return; + } + + { + register mp_digit *bottom, *top; + + /* shift the digits down */ + + /* bottom */ + bottom = a->dp; + + /* top [offset into digits] */ + top = a->dp + b; + + /* this is implemented as a sliding window where + * the window is b-digits long and digits from + * the top of the window are copied to the bottom + * + * e.g. + + b-2 | b-1 | b0 | b1 | b2 | ... | bb | ----> + /\ | ----> + \-------------------/ ----> + */ + for (x = 0; x < (a->used - b); x++) { + *bottom++ = *top++; + } + + /* zero the top digits */ + for (; x < a->used; x++) { + *bottom++ = 0; + } + } + + /* remove excess digits */ + a->used -= b; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_rshd.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_set.c b/crypto/userspace/libtommath/bn_mp_set.c new file mode 100644 index 0000000..174adcb --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_set.c @@ -0,0 +1,29 @@ +#include +#ifdef BN_MP_SET_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* set to a digit */ +void mp_set (mp_int * a, mp_digit b) +{ + mp_zero (a); + a->dp[0] = b & MP_MASK; + a->used = (a->dp[0] != 0) ? 1 : 0; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_set.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_set_int.c b/crypto/userspace/libtommath/bn_mp_set_int.c new file mode 100644 index 0000000..cf10ea1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_set_int.c @@ -0,0 +1,48 @@ +#include +#ifdef BN_MP_SET_INT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* set a 32-bit const */ +int mp_set_int (mp_int * a, unsigned long b) +{ + int x, res; + + mp_zero (a); + + /* set four bits at a time */ + for (x = 0; x < 8; x++) { + /* shift the number up four bits */ + if ((res = mp_mul_2d (a, 4, a)) != MP_OKAY) { + return res; + } + + /* OR in the top four bits of the source */ + a->dp[0] |= (b >> 28) & 15; + + /* shift the source up to the next four bits */ + b <<= 4; + + /* ensure that digits are not clamped off */ + a->used += 1; + } + mp_clamp (a); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_set_int.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_shrink.c b/crypto/userspace/libtommath/bn_mp_shrink.c new file mode 100644 index 0000000..3e38556 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_shrink.c @@ -0,0 +1,36 @@ +#include +#include +#ifdef BN_MP_SHRINK_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* shrink a bignum */ +int mp_shrink (mp_int * a) +{ + mp_digit *tmp; + if (a->alloc != a->used && a->used > 0) { + if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * a->used)) == NULL) { + return MP_MEM; + } + a->dp = tmp; + a->alloc = a->used; + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_shrink.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_signed_bin_size.c b/crypto/userspace/libtommath/bn_mp_signed_bin_size.c new file mode 100644 index 0000000..6739d19 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_signed_bin_size.c @@ -0,0 +1,27 @@ +#include +#ifdef BN_MP_SIGNED_BIN_SIZE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* get the size for an signed equivalent */ +int mp_signed_bin_size (mp_int * a) +{ + return 1 + mp_unsigned_bin_size (a); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_signed_bin_size.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_sqr.c b/crypto/userspace/libtommath/bn_mp_sqr.c new file mode 100644 index 0000000..868ccbb --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_sqr.c @@ -0,0 +1,58 @@ +#include +#ifdef BN_MP_SQR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* computes b = a*a */ +int +mp_sqr (mp_int * a, mp_int * b) +{ + int res; + +#ifdef BN_MP_TOOM_SQR_C + /* use Toom-Cook? */ + if (a->used >= TOOM_SQR_CUTOFF) { + res = mp_toom_sqr(a, b); + /* Karatsuba? */ + } else +#endif +#ifdef BN_MP_KARATSUBA_SQR_C +if (a->used >= KARATSUBA_SQR_CUTOFF) { + res = mp_karatsuba_sqr (a, b); + } else +#endif + { +#ifdef BN_FAST_S_MP_SQR_C + /* can we use the fast comba multiplier? */ + if ((a->used * 2 + 1) < MP_WARRAY && + a->used < + (1 << (sizeof(mp_word) * CHAR_BIT - 2*DIGIT_BIT - 1))) { + res = fast_s_mp_sqr (a, b); + } else +#endif +#ifdef BN_S_MP_SQR_C + res = s_mp_sqr (a, b); +#else + res = MP_VAL; +#endif + } + b->sign = MP_ZPOS; + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_sqr.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_sqrmod.c b/crypto/userspace/libtommath/bn_mp_sqrmod.c new file mode 100644 index 0000000..161cbbb --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_sqrmod.c @@ -0,0 +1,41 @@ +#include +#ifdef BN_MP_SQRMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* c = a * a (mod b) */ +int +mp_sqrmod (mp_int * a, mp_int * b, mp_int * c) +{ + int res; + mp_int t; + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + if ((res = mp_sqr (a, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + res = mp_mod (&t, b, c); + mp_clear (&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_sqrmod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_sqrt.c b/crypto/userspace/libtommath/bn_mp_sqrt.c new file mode 100644 index 0000000..8fd057c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_sqrt.c @@ -0,0 +1,81 @@ +#include +#ifdef BN_MP_SQRT_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* this function is less generic than mp_n_root, simpler and faster */ +int mp_sqrt(mp_int *arg, mp_int *ret) +{ + int res; + mp_int t1,t2; + + /* must be positive */ + if (arg->sign == MP_NEG) { + return MP_VAL; + } + + /* easy out */ + if (mp_iszero(arg) == MP_YES) { + mp_zero(ret); + return MP_OKAY; + } + + if ((res = mp_init_copy(&t1, arg)) != MP_OKAY) { + return res; + } + + if ((res = mp_init(&t2)) != MP_OKAY) { + goto E2; + } + + /* First approx. (not very bad for large arg) */ + mp_rshd (&t1,t1.used/2); + + /* t1 > 0 */ + if ((res = mp_div(arg,&t1,&t2,NULL)) != MP_OKAY) { + goto E1; + } + if ((res = mp_add(&t1,&t2,&t1)) != MP_OKAY) { + goto E1; + } + if ((res = mp_div_2(&t1,&t1)) != MP_OKAY) { + goto E1; + } + /* And now t1 > sqrt(arg) */ + do { + if ((res = mp_div(arg,&t1,&t2,NULL)) != MP_OKAY) { + goto E1; + } + if ((res = mp_add(&t1,&t2,&t1)) != MP_OKAY) { + goto E1; + } + if ((res = mp_div_2(&t1,&t1)) != MP_OKAY) { + goto E1; + } + /* t1 >= sqrt(arg) >= t2 at this point */ + } while (mp_cmp_mag(&t1,&t2) == MP_GT); + + mp_exch(&t1,ret); + +E1: mp_clear(&t2); +E2: mp_clear(&t1); + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_sqrt.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_sub.c b/crypto/userspace/libtommath/bn_mp_sub.c new file mode 100644 index 0000000..f5015cc --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_sub.c @@ -0,0 +1,59 @@ +#include +#ifdef BN_MP_SUB_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* high level subtraction (handles signs) */ +int +mp_sub (mp_int * a, mp_int * b, mp_int * c) +{ + int sa, sb, res; + + sa = a->sign; + sb = b->sign; + + if (sa != sb) { + /* subtract a negative from a positive, OR */ + /* subtract a positive from a negative. */ + /* In either case, ADD their magnitudes, */ + /* and use the sign of the first number. */ + c->sign = sa; + res = s_mp_add (a, b, c); + } else { + /* subtract a positive from a positive, OR */ + /* subtract a negative from a negative. */ + /* First, take the difference between their */ + /* magnitudes, then... */ + if (mp_cmp_mag (a, b) != MP_LT) { + /* Copy the sign from the first */ + c->sign = sa; + /* The first has a larger or equal magnitude */ + res = s_mp_sub (a, b, c); + } else { + /* The result has the *opposite* sign from */ + /* the first number. */ + c->sign = (sa == MP_ZPOS) ? MP_NEG : MP_ZPOS; + /* The second has a larger magnitude */ + res = s_mp_sub (b, a, c); + } + } + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_sub.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_sub_d.c b/crypto/userspace/libtommath/bn_mp_sub_d.c new file mode 100644 index 0000000..06cdca6 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_sub_d.c @@ -0,0 +1,93 @@ +#include +#ifdef BN_MP_SUB_D_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* single digit subtraction */ +int +mp_sub_d (mp_int * a, mp_digit b, mp_int * c) +{ + mp_digit *tmpa, *tmpc, mu; + int res, ix, oldused; + + /* grow c as required */ + if (c->alloc < a->used + 1) { + if ((res = mp_grow(c, a->used + 1)) != MP_OKAY) { + return res; + } + } + + /* if a is negative just do an unsigned + * addition [with fudged signs] + */ + if (a->sign == MP_NEG) { + a->sign = MP_ZPOS; + res = mp_add_d(a, b, c); + a->sign = c->sign = MP_NEG; + + /* clamp */ + mp_clamp(c); + + return res; + } + + /* setup regs */ + oldused = c->used; + tmpa = a->dp; + tmpc = c->dp; + + /* if a <= b simply fix the single digit */ + if ((a->used == 1 && a->dp[0] <= b) || a->used == 0) { + if (a->used == 1) { + *tmpc++ = b - *tmpa; + } else { + *tmpc++ = b; + } + ix = 1; + + /* negative/1digit */ + c->sign = MP_NEG; + c->used = 1; + } else { + /* positive/size */ + c->sign = MP_ZPOS; + c->used = a->used; + + /* subtract first digit */ + *tmpc = *tmpa++ - b; + mu = *tmpc >> (sizeof(mp_digit) * CHAR_BIT - 1); + *tmpc++ &= MP_MASK; + + /* handle rest of the digits */ + for (ix = 1; ix < a->used; ix++) { + *tmpc = *tmpa++ - mu; + mu = *tmpc >> (sizeof(mp_digit) * CHAR_BIT - 1); + *tmpc++ &= MP_MASK; + } + } + + /* zero excess digits */ + while (ix++ < oldused) { + *tmpc++ = 0; + } + mp_clamp(c); + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_sub_d.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_submod.c b/crypto/userspace/libtommath/bn_mp_submod.c new file mode 100644 index 0000000..869e23c --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_submod.c @@ -0,0 +1,42 @@ +#include +#ifdef BN_MP_SUBMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* d = a - b (mod c) */ +int +mp_submod (mp_int * a, mp_int * b, mp_int * c, mp_int * d) +{ + int res; + mp_int t; + + + if ((res = mp_init (&t)) != MP_OKAY) { + return res; + } + + if ((res = mp_sub (a, b, &t)) != MP_OKAY) { + mp_clear (&t); + return res; + } + res = mp_mod (&t, c, d); + mp_clear (&t); + return res; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_submod.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_to_signed_bin.c b/crypto/userspace/libtommath/bn_mp_to_signed_bin.c new file mode 100644 index 0000000..9df83ca --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_to_signed_bin.c @@ -0,0 +1,33 @@ +#include +#ifdef BN_MP_TO_SIGNED_BIN_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* store in signed [big endian] format */ +int mp_to_signed_bin (mp_int * a, unsigned char *b) +{ + int res; + + if ((res = mp_to_unsigned_bin (a, b + 1)) != MP_OKAY) { + return res; + } + b[0] = (unsigned char) ((a->sign == MP_ZPOS) ? 0 : 1); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_to_signed_bin.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_to_signed_bin_n.c b/crypto/userspace/libtommath/bn_mp_to_signed_bin_n.c new file mode 100644 index 0000000..677f827 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_to_signed_bin_n.c @@ -0,0 +1,31 @@ +#include +#ifdef BN_MP_TO_SIGNED_BIN_N_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* store in signed [big endian] format */ +int mp_to_signed_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen) +{ + if (*outlen < (unsigned long)mp_signed_bin_size(a)) { + return MP_VAL; + } + *outlen = mp_signed_bin_size(a); + return mp_to_signed_bin(a, b); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_to_signed_bin_n.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_to_unsigned_bin.c b/crypto/userspace/libtommath/bn_mp_to_unsigned_bin.c new file mode 100644 index 0000000..c137f10 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_to_unsigned_bin.c @@ -0,0 +1,48 @@ +#include +#ifdef BN_MP_TO_UNSIGNED_BIN_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* store in unsigned [big endian] format */ +int mp_to_unsigned_bin (mp_int * a, unsigned char *b) +{ + int x, res; + mp_int t; + + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + + x = 0; + while (mp_iszero (&t) == 0) { +#ifndef MP_8BIT + b[x++] = (unsigned char) (t.dp[0] & 255); +#else + b[x++] = (unsigned char) (t.dp[0] | ((t.dp[1] & 0x01) << 7)); +#endif + if ((res = mp_div_2d (&t, 8, &t, NULL)) != MP_OKAY) { + mp_clear (&t); + return res; + } + } + bn_reverse (b, x); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_to_unsigned_bin.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_to_unsigned_bin_n.c b/crypto/userspace/libtommath/bn_mp_to_unsigned_bin_n.c new file mode 100644 index 0000000..0dc00c6 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_to_unsigned_bin_n.c @@ -0,0 +1,31 @@ +#include +#ifdef BN_MP_TO_UNSIGNED_BIN_N_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* store in unsigned [big endian] format */ +int mp_to_unsigned_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen) +{ + if (*outlen < (unsigned long)mp_unsigned_bin_size(a)) { + return MP_VAL; + } + *outlen = mp_unsigned_bin_size(a); + return mp_to_unsigned_bin(a, b); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_to_unsigned_bin_n.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_toom_mul.c b/crypto/userspace/libtommath/bn_mp_toom_mul.c new file mode 100644 index 0000000..ad5d9e9 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_toom_mul.c @@ -0,0 +1,284 @@ +#include +#ifdef BN_MP_TOOM_MUL_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* multiplication using the Toom-Cook 3-way algorithm + * + * Much more complicated than Karatsuba but has a lower + * asymptotic running time of O(N**1.464). This algorithm is + * only particularly useful on VERY large inputs + * (we're talking 1000s of digits here...). +*/ +int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c) +{ + mp_int w0, w1, w2, w3, w4, tmp1, tmp2, a0, a1, a2, b0, b1, b2; + int res, B; + + /* init temps */ + if ((res = mp_init_multi(&w0, &w1, &w2, &w3, &w4, + &a0, &a1, &a2, &b0, &b1, + &b2, &tmp1, &tmp2, NULL)) != MP_OKAY) { + return res; + } + + /* B */ + B = MIN(a->used, b->used) / 3; + + /* a = a2 * B**2 + a1 * B + a0 */ + if ((res = mp_mod_2d(a, DIGIT_BIT * B, &a0)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_copy(a, &a1)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&a1, B); + mp_mod_2d(&a1, DIGIT_BIT * B, &a1); + + if ((res = mp_copy(a, &a2)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&a2, B*2); + + /* b = b2 * B**2 + b1 * B + b0 */ + if ((res = mp_mod_2d(b, DIGIT_BIT * B, &b0)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_copy(b, &b1)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&b1, B); + mp_mod_2d(&b1, DIGIT_BIT * B, &b1); + + if ((res = mp_copy(b, &b2)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&b2, B*2); + + /* w0 = a0*b0 */ + if ((res = mp_mul(&a0, &b0, &w0)) != MP_OKAY) { + goto ERR; + } + + /* w4 = a2 * b2 */ + if ((res = mp_mul(&a2, &b2, &w4)) != MP_OKAY) { + goto ERR; + } + + /* w1 = (a2 + 2(a1 + 2a0))(b2 + 2(b1 + 2b0)) */ + if ((res = mp_mul_2(&a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a2, &tmp1)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_mul_2(&b0, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp2, &b1, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp2, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp2, &b2, &tmp2)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_mul(&tmp1, &tmp2, &w1)) != MP_OKAY) { + goto ERR; + } + + /* w3 = (a0 + 2(a1 + 2a2))(b0 + 2(b1 + 2b2)) */ + if ((res = mp_mul_2(&a2, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_mul_2(&b2, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp2, &b1, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp2, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp2, &b0, &tmp2)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_mul(&tmp1, &tmp2, &w3)) != MP_OKAY) { + goto ERR; + } + + + /* w2 = (a2 + a1 + a0)(b2 + b1 + b0) */ + if ((res = mp_add(&a2, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&b2, &b1, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp2, &b0, &tmp2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul(&tmp1, &tmp2, &w2)) != MP_OKAY) { + goto ERR; + } + + /* now solve the matrix + + 0 0 0 0 1 + 1 2 4 8 16 + 1 1 1 1 1 + 16 8 4 2 1 + 1 0 0 0 0 + + using 12 subtractions, 4 shifts, + 2 small divisions and 1 small multiplication + */ + + /* r1 - r4 */ + if ((res = mp_sub(&w1, &w4, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r0 */ + if ((res = mp_sub(&w3, &w0, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1/2 */ + if ((res = mp_div_2(&w1, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3/2 */ + if ((res = mp_div_2(&w3, &w3)) != MP_OKAY) { + goto ERR; + } + /* r2 - r0 - r4 */ + if ((res = mp_sub(&w2, &w0, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w4, &w2)) != MP_OKAY) { + goto ERR; + } + /* r1 - r2 */ + if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r2 */ + if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1 - 8r0 */ + if ((res = mp_mul_2d(&w0, 3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w1, &tmp1, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - 8r4 */ + if ((res = mp_mul_2d(&w4, 3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w3, &tmp1, &w3)) != MP_OKAY) { + goto ERR; + } + /* 3r2 - r1 - r3 */ + if ((res = mp_mul_d(&w2, 3, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w1, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w3, &w2)) != MP_OKAY) { + goto ERR; + } + /* r1 - r2 */ + if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r2 */ + if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1/3 */ + if ((res = mp_div_3(&w1, &w1, NULL)) != MP_OKAY) { + goto ERR; + } + /* r3/3 */ + if ((res = mp_div_3(&w3, &w3, NULL)) != MP_OKAY) { + goto ERR; + } + + /* at this point shift W[n] by B*n */ + if ((res = mp_lshd(&w1, 1*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w2, 2*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w3, 3*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w4, 4*B)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_add(&w0, &w1, c)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&w2, &w3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&w4, &tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, c, c)) != MP_OKAY) { + goto ERR; + } + +ERR: + mp_clear_multi(&w0, &w1, &w2, &w3, &w4, + &a0, &a1, &a2, &b0, &b1, + &b2, &tmp1, &tmp2, NULL); + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_toom_mul.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_toom_sqr.c b/crypto/userspace/libtommath/bn_mp_toom_sqr.c new file mode 100644 index 0000000..48880d0 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_toom_sqr.c @@ -0,0 +1,226 @@ +#include +#ifdef BN_MP_TOOM_SQR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* squaring using Toom-Cook 3-way algorithm */ +int +mp_toom_sqr(mp_int *a, mp_int *b) +{ + mp_int w0, w1, w2, w3, w4, tmp1, a0, a1, a2; + int res, B; + + /* init temps */ + if ((res = mp_init_multi(&w0, &w1, &w2, &w3, &w4, &a0, &a1, &a2, &tmp1, NULL)) != MP_OKAY) { + return res; + } + + /* B */ + B = a->used / 3; + + /* a = a2 * B**2 + a1 * B + a0 */ + if ((res = mp_mod_2d(a, DIGIT_BIT * B, &a0)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_copy(a, &a1)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&a1, B); + mp_mod_2d(&a1, DIGIT_BIT * B, &a1); + + if ((res = mp_copy(a, &a2)) != MP_OKAY) { + goto ERR; + } + mp_rshd(&a2, B*2); + + /* w0 = a0*a0 */ + if ((res = mp_sqr(&a0, &w0)) != MP_OKAY) { + goto ERR; + } + + /* w4 = a2 * a2 */ + if ((res = mp_sqr(&a2, &w4)) != MP_OKAY) { + goto ERR; + } + + /* w1 = (a2 + 2(a1 + 2a0))**2 */ + if ((res = mp_mul_2(&a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a2, &tmp1)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_sqr(&tmp1, &w1)) != MP_OKAY) { + goto ERR; + } + + /* w3 = (a0 + 2(a1 + 2a2))**2 */ + if ((res = mp_mul_2(&a2, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_mul_2(&tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_sqr(&tmp1, &w3)) != MP_OKAY) { + goto ERR; + } + + + /* w2 = (a2 + a1 + a0)**2 */ + if ((res = mp_add(&a2, &a1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, &a0, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sqr(&tmp1, &w2)) != MP_OKAY) { + goto ERR; + } + + /* now solve the matrix + + 0 0 0 0 1 + 1 2 4 8 16 + 1 1 1 1 1 + 16 8 4 2 1 + 1 0 0 0 0 + + using 12 subtractions, 4 shifts, 2 small divisions and 1 small multiplication. + */ + + /* r1 - r4 */ + if ((res = mp_sub(&w1, &w4, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r0 */ + if ((res = mp_sub(&w3, &w0, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1/2 */ + if ((res = mp_div_2(&w1, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3/2 */ + if ((res = mp_div_2(&w3, &w3)) != MP_OKAY) { + goto ERR; + } + /* r2 - r0 - r4 */ + if ((res = mp_sub(&w2, &w0, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w4, &w2)) != MP_OKAY) { + goto ERR; + } + /* r1 - r2 */ + if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r2 */ + if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1 - 8r0 */ + if ((res = mp_mul_2d(&w0, 3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w1, &tmp1, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - 8r4 */ + if ((res = mp_mul_2d(&w4, 3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w3, &tmp1, &w3)) != MP_OKAY) { + goto ERR; + } + /* 3r2 - r1 - r3 */ + if ((res = mp_mul_d(&w2, 3, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w1, &w2)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_sub(&w2, &w3, &w2)) != MP_OKAY) { + goto ERR; + } + /* r1 - r2 */ + if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) { + goto ERR; + } + /* r3 - r2 */ + if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) { + goto ERR; + } + /* r1/3 */ + if ((res = mp_div_3(&w1, &w1, NULL)) != MP_OKAY) { + goto ERR; + } + /* r3/3 */ + if ((res = mp_div_3(&w3, &w3, NULL)) != MP_OKAY) { + goto ERR; + } + + /* at this point shift W[n] by B*n */ + if ((res = mp_lshd(&w1, 1*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w2, 2*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w3, 3*B)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_lshd(&w4, 4*B)) != MP_OKAY) { + goto ERR; + } + + if ((res = mp_add(&w0, &w1, b)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&w2, &w3, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&w4, &tmp1, &tmp1)) != MP_OKAY) { + goto ERR; + } + if ((res = mp_add(&tmp1, b, b)) != MP_OKAY) { + goto ERR; + } + +ERR: + mp_clear_multi(&w0, &w1, &w2, &w3, &w4, &a0, &a1, &a2, &tmp1, NULL); + return res; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_toom_sqr.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_toradix.c b/crypto/userspace/libtommath/bn_mp_toradix.c new file mode 100644 index 0000000..0adc28d --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_toradix.c @@ -0,0 +1,75 @@ +#include +#ifdef BN_MP_TORADIX_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* stores a bignum as a ASCII string in a given radix (2..64) */ +int mp_toradix (mp_int * a, char *str, int radix) +{ + int res, digs; + mp_int t; + mp_digit d; + char *_s = str; + + /* check range of the radix */ + if (radix < 2 || radix > 64) { + return MP_VAL; + } + + /* quick out if its zero */ + if (mp_iszero(a) == 1) { + *str++ = '0'; + *str = '\0'; + return MP_OKAY; + } + + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + + /* if it is negative output a - */ + if (t.sign == MP_NEG) { + ++_s; + *str++ = '-'; + t.sign = MP_ZPOS; + } + + digs = 0; + while (mp_iszero (&t) == 0) { + if ((res = mp_div_d (&t, (mp_digit) radix, &t, &d)) != MP_OKAY) { + mp_clear (&t); + return res; + } + *str++ = mp_s_rmap[d]; + ++digs; + } + + /* reverse the digits of the string. In this case _s points + * to the first digit [exluding the sign] of the number] + */ + bn_reverse ((unsigned char *)_s, digs); + + /* append a NULL so the string is properly terminated */ + *str = '\0'; + + mp_clear (&t); + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_toradix.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_toradix_n.c b/crypto/userspace/libtommath/bn_mp_toradix_n.c new file mode 100644 index 0000000..796ed55 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_toradix_n.c @@ -0,0 +1,88 @@ +#include +#ifdef BN_MP_TORADIX_N_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* stores a bignum as a ASCII string in a given radix (2..64) + * + * Stores upto maxlen-1 chars and always a NULL byte + */ +int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen) +{ + int res, digs; + mp_int t; + mp_digit d; + char *_s = str; + + /* check range of the maxlen, radix */ + if (maxlen < 2 || radix < 2 || radix > 64) { + return MP_VAL; + } + + /* quick out if its zero */ + if (mp_iszero(a) == MP_YES) { + *str++ = '0'; + *str = '\0'; + return MP_OKAY; + } + + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + + /* if it is negative output a - */ + if (t.sign == MP_NEG) { + /* we have to reverse our digits later... but not the - sign!! */ + ++_s; + + /* store the flag and mark the number as positive */ + *str++ = '-'; + t.sign = MP_ZPOS; + + /* subtract a char */ + --maxlen; + } + + digs = 0; + while (mp_iszero (&t) == 0) { + if (--maxlen < 1) { + /* no more room */ + break; + } + if ((res = mp_div_d (&t, (mp_digit) radix, &t, &d)) != MP_OKAY) { + mp_clear (&t); + return res; + } + *str++ = mp_s_rmap[d]; + ++digs; + } + + /* reverse the digits of the string. In this case _s points + * to the first digit [exluding the sign] of the number + */ + bn_reverse ((unsigned char *)_s, digs); + + /* append a NULL so the string is properly terminated */ + *str = '\0'; + + mp_clear (&t); + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_toradix_n.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_unsigned_bin_size.c b/crypto/userspace/libtommath/bn_mp_unsigned_bin_size.c new file mode 100644 index 0000000..6dc3bd5 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_unsigned_bin_size.c @@ -0,0 +1,28 @@ +#include +#ifdef BN_MP_UNSIGNED_BIN_SIZE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* get the size for an unsigned equivalent */ +int mp_unsigned_bin_size (mp_int * a) +{ + int size = mp_count_bits (a); + return (size / 8 + ((size & 7) != 0 ? 1 : 0)); +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_unsigned_bin_size.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_xor.c b/crypto/userspace/libtommath/bn_mp_xor.c new file mode 100644 index 0000000..59ff2e1 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_xor.c @@ -0,0 +1,51 @@ +#include +#ifdef BN_MP_XOR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* XOR two ints together */ +int +mp_xor (mp_int * a, mp_int * b, mp_int * c) +{ + int res, ix, px; + mp_int t, *x; + + if (a->used > b->used) { + if ((res = mp_init_copy (&t, a)) != MP_OKAY) { + return res; + } + px = b->used; + x = b; + } else { + if ((res = mp_init_copy (&t, b)) != MP_OKAY) { + return res; + } + px = a->used; + x = a; + } + + for (ix = 0; ix < px; ix++) { + t.dp[ix] ^= x->dp[ix]; + } + mp_clamp (&t); + mp_exch (c, &t); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_xor.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_mp_zero.c b/crypto/userspace/libtommath/bn_mp_zero.c new file mode 100644 index 0000000..b0977d4 --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_zero.c @@ -0,0 +1,36 @@ +#include +#ifdef BN_MP_ZERO_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* set to zero */ +void mp_zero (mp_int * a) +{ + int n; + mp_digit *tmp; + + a->sign = MP_ZPOS; + a->used = 0; + + tmp = a->dp; + for (n = 0; n < a->alloc; n++) { + *tmp++ = 0; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_zero.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_prime_tab.c b/crypto/userspace/libtommath/bn_prime_tab.c new file mode 100644 index 0000000..bd25247 --- /dev/null +++ b/crypto/userspace/libtommath/bn_prime_tab.c @@ -0,0 +1,61 @@ +#include +#ifdef BN_PRIME_TAB_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +const mp_digit ltm_prime_tab[] = { + 0x0002, 0x0003, 0x0005, 0x0007, 0x000B, 0x000D, 0x0011, 0x0013, + 0x0017, 0x001D, 0x001F, 0x0025, 0x0029, 0x002B, 0x002F, 0x0035, + 0x003B, 0x003D, 0x0043, 0x0047, 0x0049, 0x004F, 0x0053, 0x0059, + 0x0061, 0x0065, 0x0067, 0x006B, 0x006D, 0x0071, 0x007F, +#ifndef MP_8BIT + 0x0083, + 0x0089, 0x008B, 0x0095, 0x0097, 0x009D, 0x00A3, 0x00A7, 0x00AD, + 0x00B3, 0x00B5, 0x00BF, 0x00C1, 0x00C5, 0x00C7, 0x00D3, 0x00DF, + 0x00E3, 0x00E5, 0x00E9, 0x00EF, 0x00F1, 0x00FB, 0x0101, 0x0107, + 0x010D, 0x010F, 0x0115, 0x0119, 0x011B, 0x0125, 0x0133, 0x0137, + + 0x0139, 0x013D, 0x014B, 0x0151, 0x015B, 0x015D, 0x0161, 0x0167, + 0x016F, 0x0175, 0x017B, 0x017F, 0x0185, 0x018D, 0x0191, 0x0199, + 0x01A3, 0x01A5, 0x01AF, 0x01B1, 0x01B7, 0x01BB, 0x01C1, 0x01C9, + 0x01CD, 0x01CF, 0x01D3, 0x01DF, 0x01E7, 0x01EB, 0x01F3, 0x01F7, + 0x01FD, 0x0209, 0x020B, 0x021D, 0x0223, 0x022D, 0x0233, 0x0239, + 0x023B, 0x0241, 0x024B, 0x0251, 0x0257, 0x0259, 0x025F, 0x0265, + 0x0269, 0x026B, 0x0277, 0x0281, 0x0283, 0x0287, 0x028D, 0x0293, + 0x0295, 0x02A1, 0x02A5, 0x02AB, 0x02B3, 0x02BD, 0x02C5, 0x02CF, + + 0x02D7, 0x02DD, 0x02E3, 0x02E7, 0x02EF, 0x02F5, 0x02F9, 0x0301, + 0x0305, 0x0313, 0x031D, 0x0329, 0x032B, 0x0335, 0x0337, 0x033B, + 0x033D, 0x0347, 0x0355, 0x0359, 0x035B, 0x035F, 0x036D, 0x0371, + 0x0373, 0x0377, 0x038B, 0x038F, 0x0397, 0x03A1, 0x03A9, 0x03AD, + 0x03B3, 0x03B9, 0x03C7, 0x03CB, 0x03D1, 0x03D7, 0x03DF, 0x03E5, + 0x03F1, 0x03F5, 0x03FB, 0x03FD, 0x0407, 0x0409, 0x040F, 0x0419, + 0x041B, 0x0425, 0x0427, 0x042D, 0x043F, 0x0443, 0x0445, 0x0449, + 0x044F, 0x0455, 0x045D, 0x0463, 0x0469, 0x047F, 0x0481, 0x048B, + + 0x0493, 0x049D, 0x04A3, 0x04A9, 0x04B1, 0x04BD, 0x04C1, 0x04C7, + 0x04CD, 0x04CF, 0x04D5, 0x04E1, 0x04EB, 0x04FD, 0x04FF, 0x0503, + 0x0509, 0x050B, 0x0511, 0x0515, 0x0517, 0x051B, 0x0527, 0x0529, + 0x052F, 0x0551, 0x0557, 0x055D, 0x0565, 0x0577, 0x0581, 0x058F, + 0x0593, 0x0595, 0x0599, 0x059F, 0x05A7, 0x05AB, 0x05AD, 0x05B3, + 0x05BF, 0x05C9, 0x05CB, 0x05CF, 0x05D1, 0x05D5, 0x05DB, 0x05E7, + 0x05F3, 0x05FB, 0x0607, 0x060D, 0x0611, 0x0617, 0x061F, 0x0623, + 0x062B, 0x062F, 0x063D, 0x0641, 0x0647, 0x0649, 0x064D, 0x0653 +#endif +}; +#endif + +/* $Source: /cvs/libtom/libtommath/bn_prime_tab.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_reverse.c b/crypto/userspace/libtommath/bn_reverse.c new file mode 100644 index 0000000..ddfa827 --- /dev/null +++ b/crypto/userspace/libtommath/bn_reverse.c @@ -0,0 +1,39 @@ +#include +#ifdef BN_REVERSE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* reverse an array, used for radix code */ +void +bn_reverse (unsigned char *s, int len) +{ + int ix, iy; + unsigned char t; + + ix = 0; + iy = len - 1; + while (ix < iy) { + t = s[ix]; + s[ix] = s[iy]; + s[iy] = t; + ++ix; + --iy; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_reverse.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_add.c b/crypto/userspace/libtommath/bn_s_mp_add.c new file mode 100644 index 0000000..f034ae6 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_add.c @@ -0,0 +1,109 @@ +#include +#ifdef BN_S_MP_ADD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* low level addition, based on HAC pp.594, Algorithm 14.7 */ +int +s_mp_add (mp_int * a, mp_int * b, mp_int * c) +{ + mp_int *x; + int olduse, res, min, max; + + /* find sizes, we let |a| <= |b| which means we have to sort + * them. "x" will point to the input with the most digits + */ + if (a->used > b->used) { + min = b->used; + max = a->used; + x = a; + } else { + min = a->used; + max = b->used; + x = b; + } + + /* init result */ + if (c->alloc < max + 1) { + if ((res = mp_grow (c, max + 1)) != MP_OKAY) { + return res; + } + } + + /* get old used digit count and set new one */ + olduse = c->used; + c->used = max + 1; + + { + register mp_digit u, *tmpa, *tmpb, *tmpc; + register int i; + + /* alias for digit pointers */ + + /* first input */ + tmpa = a->dp; + + /* second input */ + tmpb = b->dp; + + /* destination */ + tmpc = c->dp; + + /* zero the carry */ + u = 0; + for (i = 0; i < min; i++) { + /* Compute the sum at one digit, T[i] = A[i] + B[i] + U */ + *tmpc = *tmpa++ + *tmpb++ + u; + + /* U = carry bit of T[i] */ + u = *tmpc >> ((mp_digit)DIGIT_BIT); + + /* take away carry bit from T[i] */ + *tmpc++ &= MP_MASK; + } + + /* now copy higher words if any, that is in A+B + * if A or B has more digits add those in + */ + if (min != max) { + for (; i < max; i++) { + /* T[i] = X[i] + U */ + *tmpc = x->dp[i] + u; + + /* U = carry bit of T[i] */ + u = *tmpc >> ((mp_digit)DIGIT_BIT); + + /* take away carry bit from T[i] */ + *tmpc++ &= MP_MASK; + } + } + + /* add carry */ + *tmpc++ = u; + + /* clear digits above oldused */ + for (i = c->used; i < olduse; i++) { + *tmpc++ = 0; + } + } + + mp_clamp (c); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_add.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_exptmod.c b/crypto/userspace/libtommath/bn_s_mp_exptmod.c new file mode 100644 index 0000000..097d894 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_exptmod.c @@ -0,0 +1,252 @@ +#include +#ifdef BN_S_MP_EXPTMOD_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#ifdef MP_LOW_MEM + #define TAB_SIZE 32 +#else + #define TAB_SIZE 256 +#endif + +int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode) +{ + mp_int M[TAB_SIZE], res, mu; + mp_digit buf; + int err, bitbuf, bitcpy, bitcnt, mode, digidx, x, y, winsize; + int (*redux)(mp_int*,mp_int*,mp_int*); + + /* find window size */ + x = mp_count_bits (X); + if (x <= 7) { + winsize = 2; + } else if (x <= 36) { + winsize = 3; + } else if (x <= 140) { + winsize = 4; + } else if (x <= 450) { + winsize = 5; + } else if (x <= 1303) { + winsize = 6; + } else if (x <= 3529) { + winsize = 7; + } else { + winsize = 8; + } + +#ifdef MP_LOW_MEM + if (winsize > 5) { + winsize = 5; + } +#endif + + /* init M array */ + /* init first cell */ + if ((err = mp_init(&M[1])) != MP_OKAY) { + return err; + } + + /* now init the second half of the array */ + for (x = 1<<(winsize-1); x < (1 << winsize); x++) { + if ((err = mp_init(&M[x])) != MP_OKAY) { + for (y = 1<<(winsize-1); y < x; y++) { + mp_clear (&M[y]); + } + mp_clear(&M[1]); + return err; + } + } + + /* create mu, used for Barrett reduction */ + if ((err = mp_init (&mu)) != MP_OKAY) { + goto LBL_M; + } + + if (redmode == 0) { + if ((err = mp_reduce_setup (&mu, P)) != MP_OKAY) { + goto LBL_MU; + } + redux = mp_reduce; + } else { + if ((err = mp_reduce_2k_setup_l (P, &mu)) != MP_OKAY) { + goto LBL_MU; + } + redux = mp_reduce_2k_l; + } + + /* create M table + * + * The M table contains powers of the base, + * e.g. M[x] = G**x mod P + * + * The first half of the table is not + * computed though accept for M[0] and M[1] + */ + if ((err = mp_mod (G, P, &M[1])) != MP_OKAY) { + goto LBL_MU; + } + + /* compute the value at M[1<<(winsize-1)] by squaring + * M[1] (winsize-1) times + */ + if ((err = mp_copy (&M[1], &M[1 << (winsize - 1)])) != MP_OKAY) { + goto LBL_MU; + } + + for (x = 0; x < (winsize - 1); x++) { + /* square it */ + if ((err = mp_sqr (&M[1 << (winsize - 1)], + &M[1 << (winsize - 1)])) != MP_OKAY) { + goto LBL_MU; + } + + /* reduce modulo P */ + if ((err = redux (&M[1 << (winsize - 1)], P, &mu)) != MP_OKAY) { + goto LBL_MU; + } + } + + /* create upper table, that is M[x] = M[x-1] * M[1] (mod P) + * for x = (2**(winsize - 1) + 1) to (2**winsize - 1) + */ + for (x = (1 << (winsize - 1)) + 1; x < (1 << winsize); x++) { + if ((err = mp_mul (&M[x - 1], &M[1], &M[x])) != MP_OKAY) { + goto LBL_MU; + } + if ((err = redux (&M[x], P, &mu)) != MP_OKAY) { + goto LBL_MU; + } + } + + /* setup result */ + if ((err = mp_init (&res)) != MP_OKAY) { + goto LBL_MU; + } + mp_set (&res, 1); + + /* set initial mode and bit cnt */ + mode = 0; + bitcnt = 1; + buf = 0; + digidx = X->used - 1; + bitcpy = 0; + bitbuf = 0; + + for (;;) { + /* grab next digit as required */ + if (--bitcnt == 0) { + /* if digidx == -1 we are out of digits */ + if (digidx == -1) { + break; + } + /* read next digit and reset the bitcnt */ + buf = X->dp[digidx--]; + bitcnt = (int) DIGIT_BIT; + } + + /* grab the next msb from the exponent */ + y = (buf >> (mp_digit)(DIGIT_BIT - 1)) & 1; + buf <<= (mp_digit)1; + + /* if the bit is zero and mode == 0 then we ignore it + * These represent the leading zero bits before the first 1 bit + * in the exponent. Technically this opt is not required but it + * does lower the # of trivial squaring/reductions used + */ + if (mode == 0 && y == 0) { + continue; + } + + /* if the bit is zero and mode == 1 then we square */ + if (mode == 1 && y == 0) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, &mu)) != MP_OKAY) { + goto LBL_RES; + } + continue; + } + + /* else we add it to the window */ + bitbuf |= (y << (winsize - ++bitcpy)); + mode = 2; + + if (bitcpy == winsize) { + /* ok window is filled so square as required and multiply */ + /* square first */ + for (x = 0; x < winsize; x++) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, &mu)) != MP_OKAY) { + goto LBL_RES; + } + } + + /* then multiply */ + if ((err = mp_mul (&res, &M[bitbuf], &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, &mu)) != MP_OKAY) { + goto LBL_RES; + } + + /* empty window and reset */ + bitcpy = 0; + bitbuf = 0; + mode = 1; + } + } + + /* if bits remain then square/multiply */ + if (mode == 2 && bitcpy > 0) { + /* square then multiply if the bit is set */ + for (x = 0; x < bitcpy; x++) { + if ((err = mp_sqr (&res, &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, &mu)) != MP_OKAY) { + goto LBL_RES; + } + + bitbuf <<= 1; + if ((bitbuf & (1 << winsize)) != 0) { + /* then multiply */ + if ((err = mp_mul (&res, &M[1], &res)) != MP_OKAY) { + goto LBL_RES; + } + if ((err = redux (&res, P, &mu)) != MP_OKAY) { + goto LBL_RES; + } + } + } + } + + mp_exch (&res, Y); + err = MP_OKAY; +LBL_RES:mp_clear (&res); +LBL_MU:mp_clear (&mu); +LBL_M: + mp_clear(&M[1]); + for (x = 1<<(winsize-1); x < (1 << winsize); x++) { + mp_clear (&M[x]); + } + return err; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_exptmod.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_mul_digs.c b/crypto/userspace/libtommath/bn_s_mp_mul_digs.c new file mode 100644 index 0000000..f5bbf39 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_mul_digs.c @@ -0,0 +1,90 @@ +#include +#ifdef BN_S_MP_MUL_DIGS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* multiplies |a| * |b| and only computes upto digs digits of result + * HAC pp. 595, Algorithm 14.12 Modified so you can control how + * many digits of output are created. + */ +int s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs) +{ + mp_int t; + int res, pa, pb, ix, iy; + mp_digit u; + mp_word r; + mp_digit tmpx, *tmpt, *tmpy; + + /* can we use the fast multiplier? */ + if (((digs) < MP_WARRAY) && + MIN (a->used, b->used) < + (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) { + return fast_s_mp_mul_digs (a, b, c, digs); + } + + if ((res = mp_init_size (&t, digs)) != MP_OKAY) { + return res; + } + t.used = digs; + + /* compute the digits of the product directly */ + pa = a->used; + for (ix = 0; ix < pa; ix++) { + /* set the carry to zero */ + u = 0; + + /* limit ourselves to making digs digits of output */ + pb = MIN (b->used, digs - ix); + + /* setup some aliases */ + /* copy of the digit from a used within the nested loop */ + tmpx = a->dp[ix]; + + /* an alias for the destination shifted ix places */ + tmpt = t.dp + ix; + + /* an alias for the digits of b */ + tmpy = b->dp; + + /* compute the columns of the output and propagate the carry */ + for (iy = 0; iy < pb; iy++) { + /* compute the column as a mp_word */ + r = ((mp_word)*tmpt) + + ((mp_word)tmpx) * ((mp_word)*tmpy++) + + ((mp_word) u); + + /* the new column is the lower part of the result */ + *tmpt++ = (mp_digit) (r & ((mp_word) MP_MASK)); + + /* get the carry word from the result */ + u = (mp_digit) (r >> ((mp_word) DIGIT_BIT)); + } + /* set carry if it is placed below digs */ + if (ix + iy < digs) { + *tmpt = u; + } + } + + mp_clamp (&t); + mp_exch (&t, c); + + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_mul_digs.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_mul_high_digs.c b/crypto/userspace/libtommath/bn_s_mp_mul_high_digs.c new file mode 100644 index 0000000..2b718f2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_mul_high_digs.c @@ -0,0 +1,81 @@ +#include +#ifdef BN_S_MP_MUL_HIGH_DIGS_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* multiplies |a| * |b| and does not compute the lower digs digits + * [meant to get the higher part of the product] + */ +int +s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs) +{ + mp_int t; + int res, pa, pb, ix, iy; + mp_digit u; + mp_word r; + mp_digit tmpx, *tmpt, *tmpy; + + /* can we use the fast multiplier? */ +#ifdef BN_FAST_S_MP_MUL_HIGH_DIGS_C + if (((a->used + b->used + 1) < MP_WARRAY) + && MIN (a->used, b->used) < (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) { + return fast_s_mp_mul_high_digs (a, b, c, digs); + } +#endif + + if ((res = mp_init_size (&t, a->used + b->used + 1)) != MP_OKAY) { + return res; + } + t.used = a->used + b->used + 1; + + pa = a->used; + pb = b->used; + for (ix = 0; ix < pa; ix++) { + /* clear the carry */ + u = 0; + + /* left hand side of A[ix] * B[iy] */ + tmpx = a->dp[ix]; + + /* alias to the address of where the digits will be stored */ + tmpt = &(t.dp[digs]); + + /* alias for where to read the right hand side from */ + tmpy = b->dp + (digs - ix); + + for (iy = digs - ix; iy < pb; iy++) { + /* calculate the double precision result */ + r = ((mp_word)*tmpt) + + ((mp_word)tmpx) * ((mp_word)*tmpy++) + + ((mp_word) u); + + /* get the lower part */ + *tmpt++ = (mp_digit) (r & ((mp_word) MP_MASK)); + + /* carry the carry */ + u = (mp_digit) (r >> ((mp_word) DIGIT_BIT)); + } + *tmpt = u; + } + mp_clamp (&t); + mp_exch (&t, c); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_mul_high_digs.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_sqr.c b/crypto/userspace/libtommath/bn_s_mp_sqr.c new file mode 100644 index 0000000..d2531c2 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_sqr.c @@ -0,0 +1,84 @@ +#include +#ifdef BN_S_MP_SQR_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* low level squaring, b = a*a, HAC pp.596-597, Algorithm 14.16 */ +int s_mp_sqr (mp_int * a, mp_int * b) +{ + mp_int t; + int res, ix, iy, pa; + mp_word r; + mp_digit u, tmpx, *tmpt; + + pa = a->used; + if ((res = mp_init_size (&t, 2*pa + 1)) != MP_OKAY) { + return res; + } + + /* default used is maximum possible size */ + t.used = 2*pa + 1; + + for (ix = 0; ix < pa; ix++) { + /* first calculate the digit at 2*ix */ + /* calculate double precision result */ + r = ((mp_word) t.dp[2*ix]) + + ((mp_word)a->dp[ix])*((mp_word)a->dp[ix]); + + /* store lower part in result */ + t.dp[ix+ix] = (mp_digit) (r & ((mp_word) MP_MASK)); + + /* get the carry */ + u = (mp_digit)(r >> ((mp_word) DIGIT_BIT)); + + /* left hand side of A[ix] * A[iy] */ + tmpx = a->dp[ix]; + + /* alias for where to store the results */ + tmpt = t.dp + (2*ix + 1); + + for (iy = ix + 1; iy < pa; iy++) { + /* first calculate the product */ + r = ((mp_word)tmpx) * ((mp_word)a->dp[iy]); + + /* now calculate the double precision result, note we use + * addition instead of *2 since it's easier to optimize + */ + r = ((mp_word) *tmpt) + r + r + ((mp_word) u); + + /* store lower part */ + *tmpt++ = (mp_digit) (r & ((mp_word) MP_MASK)); + + /* get carry */ + u = (mp_digit)(r >> ((mp_word) DIGIT_BIT)); + } + /* propagate upwards */ + while (u != ((mp_digit) 0)) { + r = ((mp_word) *tmpt) + ((mp_word) u); + *tmpt++ = (mp_digit) (r & ((mp_word) MP_MASK)); + u = (mp_digit)(r >> ((mp_word) DIGIT_BIT)); + } + } + + mp_clamp (&t); + mp_exch (&t, b); + mp_clear (&t); + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_sqr.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bn_s_mp_sub.c b/crypto/userspace/libtommath/bn_s_mp_sub.c new file mode 100644 index 0000000..6a60c39 --- /dev/null +++ b/crypto/userspace/libtommath/bn_s_mp_sub.c @@ -0,0 +1,89 @@ +#include +#ifdef BN_S_MP_SUB_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* low level subtraction (assumes |a| > |b|), HAC pp.595 Algorithm 14.9 */ +int +s_mp_sub (mp_int * a, mp_int * b, mp_int * c) +{ + int olduse, res, min, max; + + /* find sizes */ + min = b->used; + max = a->used; + + /* init result */ + if (c->alloc < max) { + if ((res = mp_grow (c, max)) != MP_OKAY) { + return res; + } + } + olduse = c->used; + c->used = max; + + { + register mp_digit u, *tmpa, *tmpb, *tmpc; + register int i; + + /* alias for digit pointers */ + tmpa = a->dp; + tmpb = b->dp; + tmpc = c->dp; + + /* set carry to zero */ + u = 0; + for (i = 0; i < min; i++) { + /* T[i] = A[i] - B[i] - U */ + *tmpc = *tmpa++ - *tmpb++ - u; + + /* U = carry bit of T[i] + * Note this saves performing an AND operation since + * if a carry does occur it will propagate all the way to the + * MSB. As a result a single shift is enough to get the carry + */ + u = *tmpc >> ((mp_digit)(CHAR_BIT * sizeof (mp_digit) - 1)); + + /* Clear carry from T[i] */ + *tmpc++ &= MP_MASK; + } + + /* now copy higher words if any, e.g. if A has more digits than B */ + for (; i < max; i++) { + /* T[i] = A[i] - U */ + *tmpc = *tmpa++ - u; + + /* U = carry bit of T[i] */ + u = *tmpc >> ((mp_digit)(CHAR_BIT * sizeof (mp_digit) - 1)); + + /* Clear carry from T[i] */ + *tmpc++ &= MP_MASK; + } + + /* clear digits above used (since we may not have grown result above) */ + for (i = c->used; i < olduse; i++) { + *tmpc++ = 0; + } + } + + mp_clamp (c); + return MP_OKAY; +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_s_mp_sub.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/bncore.c b/crypto/userspace/libtommath/bncore.c new file mode 100644 index 0000000..8fb1824 --- /dev/null +++ b/crypto/userspace/libtommath/bncore.c @@ -0,0 +1,36 @@ +#include +#ifdef BNCORE_C +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Known optimal configurations + + CPU /Compiler /MUL CUTOFF/SQR CUTOFF +------------------------------------------------------------- + Intel P4 Northwood /GCC v3.4.1 / 88/ 128/LTM 0.32 ;-) + AMD Athlon64 /GCC v3.4.4 / 80/ 120/LTM 0.35 + +*/ + +int KARATSUBA_MUL_CUTOFF = 80, /* Min. number of digits before Karatsuba multiplication is used. */ + KARATSUBA_SQR_CUTOFF = 120, /* Min. number of digits before Karatsuba squaring is used. */ + + TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */ + TOOM_SQR_CUTOFF = 400; +#endif + +/* $Source: /cvs/libtom/libtommath/bncore.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ diff --git a/crypto/userspace/libtommath/changes.txt b/crypto/userspace/libtommath/changes.txt new file mode 100644 index 0000000..b0da4da --- /dev/null +++ b/crypto/userspace/libtommath/changes.txt @@ -0,0 +1,397 @@ +March 10th, 2007 +v0.41 -- Wolfgang Ehrhardt suggested a quick fix to mp_div_d() which makes the detection of powers of two quicker. + -- [CRI] Added libtommath.dsp for Visual C++ users. + +December 24th, 2006 +v0.40 -- Updated makefile to properly support LIBNAME + -- Fixed bug in fast_s_mp_mul_high_digs() which overflowed (line 83), thanks Valgrind! + +April 4th, 2006 +v0.39 -- Jim Wigginton pointed out my Montgomery examples in figures 6.4 and 6.6 were off by one, k should be 9 not 8 + -- Bruce Guenter suggested I use --tag=CC for libtool builds where the compiler may think it's C++. + -- "mm" from sci.crypt pointed out that my mp_gcd was sub-optimal (I also updated and corrected the book) + -- updated some of the @@ tags in tommath.src to reflect source changes. + -- updated email and url info in all source files + +Jan 26th, 2006 +v0.38 -- broken makefile.shared fixed + -- removed some carry stores that were not required [updated text] + +November 18th, 2005 +v0.37 -- [Don Porter] reported on a TCL list [HEY SEND ME BUGREPORTS ALREADY!!!] that mp_add_d() would compute -0 with some inputs. Fixed. + -- [rinick@gmail.com] reported the makefile.bcc was messed up. Fixed. + -- [Kevin Kenny] reported some issues with mp_toradix_n(). Now it doesn't require a min of 3 chars of output. + -- Made the make command renamable. Wee + +August 1st, 2005 +v0.36 -- LTM_PRIME_2MSB_ON was fixed and the "OFF" flag was removed. + -- [Peter LaDow] found a typo in the XREALLOC macro + -- [Peter LaDow] pointed out that mp_read_(un)signed_bin should have "const" on the input + -- Ported LTC patch to fix the prime_random_ex() function to get the bitsize correct [and the maskOR flags] + -- Kevin Kenny pointed out a stray // + -- David Hulton pointed out a typo in the textbook [mp_montgomery_setup() pseudo-code] + -- Neal Hamilton (Elliptic Semiconductor) pointed out that my Karatsuba notation was backwards and that I could use + unsigned operations in the routine. + -- Paul Schmidt pointed out a linking error in mp_exptmod() when BN_S_MP_EXPTMOD_C is undefined (and another for read_radix) + -- Updated makefiles to be way more flexible + +March 12th, 2005 +v0.35 -- Stupid XOR function missing line again... oops. + -- Fixed bug in invmod not handling negative inputs correctly [Wolfgang Ehrhardt] + -- Made exteuclid always give positive u3 output...[ Wolfgang Ehrhardt ] + -- [Wolfgang Ehrhardt] Suggested a fix for mp_reduce() which avoided underruns. ;-) + -- mp_rand() would emit one too many digits and it was possible to get a 0 out of it ... oops + -- Added montgomery to the testing to make sure it handles 1..10 digit moduli correctly + -- Fixed bug in comba that would lead to possible erroneous outputs when "pa < digs" + -- Fixed bug in mp_toradix_size for "0" [Kevin Kenny] + -- Updated chapters 1-5 of the textbook ;-) It now talks about the new comba code! + +February 12th, 2005 +v0.34 -- Fixed two more small errors in mp_prime_random_ex() + -- Fixed overflow in mp_mul_d() [Kevin Kenny] + -- Added mp_to_(un)signed_bin_n() functions which do bounds checking for ya [and report the size] + -- Added "large" diminished radix support. Speeds up things like DSA where the moduli is of the form 2^k - P for some P < 2^(k/2) or so + Actually is faster than Montgomery on my AMD64 (and probably much faster on a P4) + -- Updated the manual a bit + -- Ok so I haven't done the textbook work yet... My current freelance gig has landed me in France till the + end of Feb/05. Once I get back I'll have tons of free time and I plan to go to town on the book. + As of this release the API will freeze. At least until the book catches up with all the changes. I welcome + bug reports but new algorithms will have to wait. + +December 23rd, 2004 +v0.33 -- Fixed "small" variant for mp_div() which would munge with negative dividends... + -- Fixed bug in mp_prime_random_ex() which would set the most significant byte to zero when + no special flags were set + -- Fixed overflow [minor] bug in fast_s_mp_sqr() + -- Made the makefiles easier to configure the group/user that ltm will install as + -- Fixed "final carry" bug in comba multipliers. (Volkan Ceylan) + -- Matt Johnston pointed out a missing semi-colon in mp_exptmod + +October 29th, 2004 +v0.32 -- Added "makefile.shared" for shared object support + -- Added more to the build options/configs in the manual + -- Started the Depends framework, wrote dep.pl to scan deps and + produce "callgraph.txt" ;-) + -- Wrote SC_RSA_1 which will enable close to the minimum required to perform + RSA on 32-bit [or 64-bit] platforms with LibTomCrypt + -- Merged in the small/slower mp_div replacement. You can now toggle which + you want to use as your mp_div() at build time. Saves roughly 8KB or so. + -- Renamed a few files and changed some comments to make depends system work better. + (No changes to function names) + -- Merged in new Combas that perform 2 reads per inner loop instead of the older + 3reads/2writes per inner loop of the old code. Really though if you want speed + learn to use TomsFastMath ;-) + +August 9th, 2004 +v0.31 -- "profiled" builds now :-) new timings for Intel Northwoods + -- Added "pretty" build target + -- Update mp_init() to actually assign 0's instead of relying on calloc() + -- "Wolfgang Ehrhardt" found a bug in mp_mul() where if + you multiply a negative by zero you get negative zero as the result. Oops. + -- J Harper from PeerSec let me toy with his AMD64 and I got 60-bit digits working properly + [this also means that I fixed a bug where if sizeof(int) < sizeof(mp_digit) it would bug] + +April 11th, 2004 +v0.30 -- Added "mp_toradix_n" which stores upto "n-1" least significant digits of an mp_int + -- Johan Lindh sent a patch so MSVC wouldn't whine about redefining malloc [in weird dll modes] + -- Henrik Goldman spotted a missing OPT_CAST in mp_fwrite() + -- Tuned tommath.h so that when MP_LOW_MEM is defined MP_PREC shall be reduced. + [I also allow MP_PREC to be externally defined now] + -- Sped up mp_cnt_lsb() by using a 4x4 table [e.g. 4x speedup] + -- Added mp_prime_random_ex() which is a more versatile prime generator accurate to + exact bit lengths (unlike the deprecated but still available mp_prime_random() which + is only accurate to byte lengths). See the new LTM_PRIME_* flags ;-) + -- Alex Polushin contributed an optimized mp_sqrt() as well as mp_get_int() and mp_is_square(). + I've cleaned them all up to be a little more consistent [along with one bug fix] for this release. + -- Added mp_init_set and mp_init_set_int to initialize and set small constants with one function + call. + -- Removed /etclib directory [um LibTomPoly deprecates this]. + -- Fixed mp_mod() so the sign of the result agrees with the sign of the modulus. + ++ N.B. My semester is almost up so expect updates to the textbook to be posted to the libtomcrypt.org + website. + +Jan 25th, 2004 +v0.29 ++ Note: "Henrik" from the v0.28 changelog refers to Henrik Goldman ;-) + -- Added fix to mp_shrink to prevent a realloc when used == 0 [e.g. realloc zero bytes???] + -- Made the mp_prime_rabin_miller_trials() function internal table smaller and also + set the minimum number of tests to two (sounds a bit safer). + -- Added a mp_exteuclid() which computes the extended euclidean algorithm. + -- Fixed a memory leak in s_mp_exptmod() [called when Barrett reduction is to be used] which would arise + if a multiplication or subsequent reduction failed [would not free the temp result]. + -- Made an API change to mp_radix_size(). It now returns an error code and stores the required size + through an "int star" passed to it. + +Dec 24th, 2003 +v0.28 -- Henrik Goldman suggested I add casts to the montomgery code [stores into mu...] so compilers wouldn't + spew [erroneous] diagnostics... fixed. + -- Henrik Goldman also spotted two typos. One in mp_radix_size() and another in mp_toradix(). + -- Added fix to mp_shrink() to avoid a memory leak. + -- Added mp_prime_random() which requires a callback to make truly random primes of a given nature + (idea from chat with Niels Ferguson at Crypto'03) + -- Picked up a second wind. I'm filled with Gooo. Mission Gooo! + -- Removed divisions from mp_reduce_is_2k() + -- Sped up mp_div_d() [general case] to use only one division per digit instead of two. + -- Added the heap macros from LTC to LTM. Now you can easily [by editing four lines of tommath.h] + change the name of the heap functions used in LTM [also compatible with LTC via MPI mode] + -- Added bn_prime_rabin_miller_trials() which gives the number of Rabin-Miller trials to achieve + a failure rate of less than 2^-96 + -- fixed bug in fast_mp_invmod(). The initial testing logic was wrong. An invalid input is not when + "a" and "b" are even it's when "b" is even [the algo is for odd moduli only]. + -- Started a new manual [finally]. It is incomplete and will be finished as time goes on. I had to stop + adding full demos around half way in chapter three so I could at least get a good portion of the + manual done. If you really need help using the library you can always email me! + -- My Textbook is now included as part of the package [all Public Domain] + +Sept 19th, 2003 +v0.27 -- Removed changes.txt~ which was made by accident since "kate" decided it was + a good time to re-enable backups... [kde is fun!] + -- In mp_grow() "a->dp" is not overwritten by realloc call [re: memory leak] + Now if mp_grow() fails the mp_int is still valid and can be cleared via + mp_clear() to reclaim the memory. + -- Henrik Goldman found a buffer overflow bug in mp_add_d(). Fixed. + -- Cleaned up mp_mul_d() to be much easier to read and follow. + +Aug 29th, 2003 +v0.26 -- Fixed typo that caused warning with GCC 3.2 + -- Martin Marcel noticed a bug in mp_neg() that allowed negative zeroes. + Also, Martin is the fellow who noted the bugs in mp_gcd() of 0.24/0.25. + -- Martin Marcel noticed an optimization [and slight bug] in mp_lcm(). + -- Added fix to mp_read_unsigned_bin to prevent a buffer overflow. + -- Beefed up the comments in the baseline multipliers [and montgomery] + -- Added "mont" demo to the makefile.msvc in etc/ + -- Optimized sign compares in mp_cmp from 4 to 2 cases. + +Aug 4th, 2003 +v0.25 -- Fix to mp_gcd again... oops (0,-a) == (-a, 0) == a + -- Fix to mp_clear which didn't reset the sign [Greg Rose] + -- Added mp_error_to_string() to convert return codes to strings. [Greg Rose] + -- Optimized fast_mp_invmod() to do the test for invalid inputs [both even] + first so temps don't have to be initialized if it's going to fail. + -- Optimized mp_gcd() by removing mp_div_2d calls for when one of the inputs + is odd. + -- Tons of new comments, some indentation fixups, etc. + -- mp_jacobi() returns MP_VAL if the modulus is less than or equal to zero. + -- fixed two typos in the header of each file :-) + -- LibTomMath is officially Public Domain [see LICENSE] + +July 15th, 2003 +v0.24 -- Optimized mp_add_d and mp_sub_d to not allocate temporary variables + -- Fixed mp_gcd() so the gcd of 0,0 is 0. Allows the gcd operation to be chained + e.g. (0,0,a) == a [instead of 1] + -- Should be one of the last release for a while. Working on LibTomMath book now. + -- optimized the pprime demo [/etc/pprime.c] to first make a huge table of single + digit primes then it reads them randomly instead of randomly choosing/testing single + digit primes. + +July 12th, 2003 +v0.23 -- Optimized mp_prime_next_prime() to not use mp_mod [via is_divisible()] in each + iteration. Instead now a smaller table is kept of the residues which can be updated + without division. + -- Fixed a bug in next_prime() where an input of zero would be treated as odd and + have two added to it [to move to the next odd]. + -- fixed a bug in prime_fermat() and prime_miller_rabin() which allowed the base + to be negative, zero or one. Normally the test is only valid if the base is + greater than one. + -- changed the next_prime() prototype to accept a new parameter "bbs_style" which + will find the next prime congruent to 3 mod 4. The default [bbs_style==0] will + make primes which are either congruent to 1 or 3 mod 4. + -- fixed mp_read_unsigned_bin() so that it doesn't include both code for + the case DIGIT_BIT < 8 and >= 8 + -- optimized div_d() to easy out on division by 1 [or if a == 0] and use + logical shifts if the divisor is a power of two. + -- the default DIGIT_BIT type was not int for non-default builds. Fixed. + +July 2nd, 2003 +v0.22 -- Fixed up mp_invmod so the result is properly in range now [was always congruent to the inverse...] + -- Fixed up s_mp_exptmod and mp_exptmod_fast so the lower half of the pre-computed table isn't allocated + which makes the algorithm use half as much ram. + -- Fixed the install script not to make the book :-) [which isn't included anyways] + -- added mp_cnt_lsb() which counts how many of the lsbs are zero + -- optimized mp_gcd() to use the new mp_cnt_lsb() to replace multiple divisions by two by a single division. + -- applied similar optimization to mp_prime_miller_rabin(). + -- Fixed a bug in both mp_invmod() and fast_mp_invmod() which tested for odd + via "mp_iseven() == 0" which is not valid [since zero is not even either]. + +June 19th, 2003 +v0.21 -- Fixed bug in mp_mul_d which would not handle sign correctly [would not always forward it] + -- Removed the #line lines from gen.pl [was in violation of ISO C] + +June 8th, 2003 +v0.20 -- Removed the book from the package. Added the TDCAL license document. + -- This release is officially pure-bred TDCAL again [last officially TDCAL based release was v0.16] + +June 6th, 2003 +v0.19 -- Fixed a bug in mp_montgomery_reduce() which was introduced when I tweaked mp_rshd() in the previous release. + Essentially the digits were not trimmed before the compare which cause a subtraction to occur all the time. + -- Fixed up etc/tune.c a bit to stop testing new cutoffs after 16 failures [to find more optimal points]. + Brute force ho! + + +May 29th, 2003 +v0.18 -- Fixed a bug in s_mp_sqr which would handle carries properly just not very elegantly. + (e.g. correct result, just bad looking code) + -- Fixed bug in mp_sqr which still had a 512 constant instead of MP_WARRAY + -- Added Toom-Cook multipliers [needs tuning!] + -- Added efficient divide by 3 algorithm mp_div_3 + -- Re-wrote mp_div_d to be faster than calling mp_div + -- Added in a donated BCC makefile and a single page LTM poster (ahalhabsi@sbcglobal.net) + -- Added mp_reduce_2k which reduces an input modulo n = 2**p - k for any single digit k + -- Made the exptmod system be aware of the 2k reduction algorithms. + -- Rewrote mp_dr_reduce to be smaller, simpler and easier to understand. + +May 17th, 2003 +v0.17 -- Benjamin Goldberg submitted optimized mp_add and mp_sub routines. A new gen.pl as well + as several smaller suggestions. Thanks! + -- removed call to mp_cmp in inner loop of mp_div and put mp_cmp_mag in its place :-) + -- Fixed bug in mp_exptmod that would cause it to fail for odd moduli when DIGIT_BIT != 28 + -- mp_exptmod now also returns errors if the modulus is negative and will handle negative exponents + -- mp_prime_is_prime will now return true if the input is one of the primes in the prime table + -- Damian M Gryski (dgryski@uwaterloo.ca) found a index out of bounds error in the + mp_fast_s_mp_mul_high_digs function which didn't come up before. (fixed) + -- Refactored the DR reduction code so there is only one function per file. + -- Fixed bug in the mp_mul() which would erroneously avoid the faster multiplier [comba] when it was + allowed. The bug would not cause the incorrect value to be produced just less efficient (fixed) + -- Fixed similar bug in the Montgomery reduction code. + -- Added tons of (mp_digit) casts so the 7/15/28/31 bit digit code will work flawlessly out of the box. + Also added limited support for 64-bit machines with a 60-bit digit. Both thanks to Tom Wu (tom@arcot.com) + -- Added new comments here and there, cleaned up some code [style stuff] + -- Fixed a lingering typo in mp_exptmod* that would set bitcnt to zero then one. Very silly stuff :-) + -- Fixed up mp_exptmod_fast so it would set "redux" to the comba Montgomery reduction if allowed. This + saves quite a few calls and if statements. + -- Added etc/mont.c a test of the Montgomery reduction [assuming all else works :-| ] + -- Fixed up etc/tune.c to use a wider test range [more appropriate] also added a x86 based addition which + uses RDTSC for high precision timing. + -- Updated demo/demo.c to remove MPI stuff [won't work anyways], made the tests run for 2 seconds each so its + not so insanely slow. Also made the output space delimited [and fixed up various errors] + -- Added logs directory, logs/graph.dem which will use gnuplot to make a series of PNG files + that go with the pre-made index.html. You have to build [via make timing] and run ltmtest first in the + root of the package. + -- Fixed a bug in mp_sub and mp_add where "-a - -a" or "-a + a" would produce -0 as the result [obviously invalid]. + -- Fixed a bug in mp_rshd. If the count == a.used it should zero/return [instead of shifting] + -- Fixed a "off-by-one" bug in mp_mul2d. The initial size check on alloc would be off by one if the residue + shifting caused a carry. + -- Fixed a bug where s_mp_mul_digs() would not call the Comba based routine if allowed. This made Barrett reduction + slower than it had to be. + +Mar 29th, 2003 +v0.16 -- Sped up mp_div by making normalization one shift call + -- Sped up mp_mul_2d/mp_div_2d by aliasing pointers :-) + -- Cleaned up mp_gcd to use the macros for odd/even detection + -- Added comments here and there, mostly there but occasionally here too. + +Mar 22nd, 2003 +v0.15 -- Added series of prime testing routines to lib + -- Fixed up etc/tune.c + -- Added DR reduction algorithm + -- Beefed up the manual more. + -- Fixed up demo/demo.c so it doesn't have so many warnings and it does the full series of + tests + -- Added "pre-gen" directory which will hold a "gen.pl"'ed copy of the entire lib [done at + zipup time so its always the latest] + -- Added conditional casts for C++ users [boo!] + +Mar 15th, 2003 +v0.14 -- Tons of manual updates + -- cleaned up the directory + -- added MSVC makefiles + -- source changes [that I don't recall] + -- Fixed up the lshd/rshd code to use pointer aliasing + -- Fixed up the mul_2d and div_2d to not call rshd/lshd unless needed + -- Fixed up etc/tune.c a tad + -- fixed up demo/demo.c to output comma-delimited results of timing + also fixed up timing demo to use a finer granularity for various functions + -- fixed up demo/demo.c testing to pause during testing so my Duron won't catch on fire + [stays around 31-35C during testing :-)] + +Feb 13th, 2003 +v0.13 -- tons of minor speed-ups in low level add, sub, mul_2 and div_2 which propagate + to other functions like mp_invmod, mp_div, etc... + -- Sped up mp_exptmod_fast by using new code to find R mod m [e.g. B^n mod m] + -- minor fixes + +Jan 17th, 2003 +v0.12 -- re-wrote the majority of the makefile so its more portable and will + install via "make install" on most *nix platforms + -- Re-packaged all the source as seperate files. Means the library a single + file packagage any more. Instead of just adding "bn.c" you have to add + libtommath.a + -- Renamed "bn.h" to "tommath.h" + -- Changes to the manual to reflect all of this + -- Used GNU Indent to clean up the source + +Jan 15th, 2003 +v0.11 -- More subtle fixes + -- Moved to gentoo linux [hurrah!] so made *nix specific fixes to the make process + -- Sped up the montgomery reduction code quite a bit + -- fixed up demo so when building timing for the x86 it assumes ELF format now + +Jan 9th, 2003 +v0.10 -- Pekka Riikonen suggested fixes to the radix conversion code. + -- Added baseline montgomery and comba montgomery reductions, sped up exptmods + [to a point, see bn.h for MONTGOMERY_EXPT_CUTOFF] + +Jan 6th, 2003 +v0.09 -- Updated the manual to reflect recent changes. :-) + -- Added Jacobi function (mp_jacobi) to supplement the number theory side of the lib + -- Added a Mersenne prime finder demo in ./etc/mersenne.c + +Jan 2nd, 2003 +v0.08 -- Sped up the multipliers by moving the inner loop variables into a smaller scope + -- Corrected a bunch of small "warnings" + -- Added more comments + -- Made "mtest" be able to use /dev/random, /dev/urandom or stdin for RNG data + -- Corrected some bugs where error messages were potentially ignored + -- add etc/pprime.c program which makes numbers which are provably prime. + +Jan 1st, 2003 +v0.07 -- Removed alot of heap operations from core functions to speed them up + -- Added a root finding function [and mp_sqrt macro like from MPI] + -- Added more to manual + +Dec 31st, 2002 +v0.06 -- Sped up the s_mp_add, s_mp_sub which inturn sped up mp_invmod, mp_exptmod, etc... + -- Cleaned up the header a bit more + +Dec 30th, 2002 +v0.05 -- Builds with MSVC out of the box + -- Fixed a bug in mp_invmod w.r.t. even moduli + -- Made mp_toradix and mp_read_radix use char instead of unsigned char arrays + -- Fixed up exptmod to use fewer multiplications + -- Fixed up mp_init_size to use only one heap operation + -- Note there is a slight "off-by-one" bug in the library somewhere + without the padding (see the source for comment) the library + crashes in libtomcrypt. Anyways a reasonable workaround is to pad the + numbers which will always correct it since as the numbers grow the padding + will still be beyond the end of the number + -- Added more to the manual + +Dec 29th, 2002 +v0.04 -- Fixed a memory leak in mp_to_unsigned_bin + -- optimized invmod code + -- Fixed bug in mp_div + -- use exchange instead of copy for results + -- added a bit more to the manual + +Dec 27th, 2002 +v0.03 -- Sped up s_mp_mul_high_digs by not computing the carries of the lower digits + -- Fixed a bug where mp_set_int wouldn't zero the value first and set the used member. + -- fixed a bug in s_mp_mul_high_digs where the limit placed on the result digits was not calculated properly + -- fixed bugs in add/sub/mul/sqr_mod functions where if the modulus and dest were the same it wouldn't work + -- fixed a bug in mp_mod and mp_mod_d concerning negative inputs + -- mp_mul_d didn't preserve sign + -- Many many many many fixes + -- Works in LibTomCrypt now :-) + -- Added iterations to the timing demos... more accurate. + -- Tom needs a job. + +Dec 26th, 2002 +v0.02 -- Fixed a few "slips" in the manual. This is "LibTomMath" afterall :-) + -- Added mp_cmp_mag, mp_neg, mp_abs and mp_radix_size that were missing. + -- Sped up the fast [comba] multipliers more [yahoo!] + +Dec 25th,2002 +v0.01 -- Initial release. Gimme a break. + -- Todo list, + add details to manual [e.g. algorithms] + more comments in code + example programs diff --git a/crypto/userspace/libtommath/pretty.build b/crypto/userspace/libtommath/pretty.build new file mode 100644 index 0000000..a708b8a --- /dev/null +++ b/crypto/userspace/libtommath/pretty.build @@ -0,0 +1,66 @@ +#!/bin/perl -w +# +# Cute little builder for perl +# Total waste of development time... +# +# This will build all the object files and then the archive .a file +# requires GCC, GNU make and a sense of humour. +# +# Tom St Denis +use strict; + +my $count = 0; +my $starttime = time; +my $rate = 0; +print "Scanning for source files...\n"; +foreach my $filename (glob "*.c") { + ++$count; +} +print "Source files to build: $count\nBuilding...\n"; +my $i = 0; +my $lines = 0; +my $filesbuilt = 0; +foreach my $filename (glob "*.c") { + printf("Building %3.2f%%, ", (++$i/$count)*100.0); + if ($i % 4 == 0) { print "/, "; } + if ($i % 4 == 1) { print "-, "; } + if ($i % 4 == 2) { print "\\, "; } + if ($i % 4 == 3) { print "|, "; } + if ($rate > 0) { + my $tleft = ($count - $i) / $rate; + my $tsec = $tleft%60; + my $tmin = ($tleft/60)%60; + my $thour = ($tleft/3600)%60; + printf("%2d:%02d:%02d left, ", $thour, $tmin, $tsec); + } + my $cnt = ($i/$count)*30.0; + my $x = 0; + print "["; + for (; $x < $cnt; $x++) { print "#"; } + for (; $x < 30; $x++) { print " "; } + print "]\r"; + my $tmp = $filename; + $tmp =~ s/\.c/".o"/ge; + if (open(SRC, "<$tmp")) { + close SRC; + } else { + !system("make $tmp > /dev/null 2>/dev/null") or die "\nERROR: Failed to make $tmp!!!\n"; + open( SRC, "<$filename" ) or die "Couldn't open $filename for reading: $!"; + ++$lines while (); + close SRC or die "Error closing $filename after reading: $!"; + ++$filesbuilt; + } + + # update timer + if (time != $starttime) { + my $delay = time - $starttime; + $rate = $i/$delay; + } +} + +# finish building the library +printf("\nFinished building source (%d seconds, %3.2f files per second).\n", time - $starttime, $rate); +print "Compiled approximately $filesbuilt files and $lines lines of code.\n"; +print "Doing final make (building archive...)\n"; +!system("make > /dev/null 2>/dev/null") or die "\nERROR: Failed to perform last make command!!!\n"; +print "done.\n"; \ No newline at end of file diff --git a/crypto/userspace/libtommath/tommath.h b/crypto/userspace/libtommath/tommath.h new file mode 100644 index 0000000..37fb23c --- /dev/null +++ b/crypto/userspace/libtommath/tommath.h @@ -0,0 +1,555 @@ +/* LibTomMath, multiple-precision integer library -- Tom St Denis + * + * LibTomMath is a library that provides multiple-precision + * integer arithmetic as well as number theoretic functionality. + * + * The library was designed directly after the MPI library by + * Michael Fromberger but has been written from scratch with + * additional optimizations in place. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com + */ +#ifndef BN_H_ +#define BN_H_ + +#include +#include +#include +#include + +#define CHAR_BIT sizeof(uint8_t)*8 + +inline static int rand(void) +{ + int res; + + get_random_bytes(&res, sizeof(int)); + + return res; +} + +#include + +#ifndef MIN + #define MIN(x,y) ((x)<(y)?(x):(y)) +#endif + +#ifndef MAX + #define MAX(x,y) ((x)>(y)?(x):(y)) +#endif + +#ifdef __cplusplus +extern "C" { + +/* C++ compilers don't like assigning void * to mp_digit * */ +#define OPT_CAST(x) (x *) + +#else + +/* C on the other hand doesn't care */ +#define OPT_CAST(x) + +#endif + + +/* some default configurations. + * + * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits + * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits + * + * At the very least a mp_digit must be able to hold 7 bits + * [any size beyond that is ok provided it doesn't overflow the data type] + */ +#if BITS_PER_LONG <= 32 + + typedef uint16_t mp_digit; + typedef uint32_t mp_word; +# define DIGIT_BIT 15 + +#elif BITS_PER_LONG == 64 + + typedef uint32_t mp_digit; + typedef uint64_t mp_word; +# define DIGIT_BIT 31 + +#endif + +#if 0 + /* if we could get a way to use an 128 bit integer + * in kernel, use this. + */ + typedef uint64_t mp_digit; + typedef __uint128_t mp_word; +# define DIGIT_BIT 60 + +#endif + +/* define heap macros */ +#ifndef XMALLOC +# define XMALLOC(x) kmalloc(x, GFP_KERNEL) +# define XFREE kfree +# define XREALLOC(x,y) krealloc(x,y, GFP_KERNEL) +# define XCALLOC(x,y) kzalloc(x*y, GPF_KERNEL) +#endif + +/* otherwise the bits per digit is calculated automatically from the size of a mp_digit */ +#ifndef DIGIT_BIT +// #define DIGIT_BIT ((int)((CHAR_BIT * sizeof(mp_digit) - 1))) /* bits per digit */ +#endif + +#define MP_DIGIT_BIT DIGIT_BIT +#define MP_MASK ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1)) +#define MP_DIGIT_MAX MP_MASK + +/* equalities */ +#define MP_LT -1 /* less than */ +#define MP_EQ 0 /* equal to */ +#define MP_GT 1 /* greater than */ + +#define MP_ZPOS 0 /* positive integer */ +#define MP_NEG 1 /* negative */ + +#define MP_OKAY 0 /* ok result */ +#define MP_MEM -2 /* out of mem */ +#define MP_VAL -3 /* invalid input */ +#define MP_RANGE MP_VAL + +#define MP_YES 1 /* yes response */ +#define MP_NO 0 /* no response */ + +/* Primality generation flags */ +#define LTM_PRIME_BBS 0x0001 /* BBS style prime */ +#define LTM_PRIME_SAFE 0x0002 /* Safe prime (p-1)/2 == prime */ +#define LTM_PRIME_2MSB_ON 0x0008 /* force 2nd MSB to 1 */ + +typedef int mp_err; + +/* you'll have to tune these... */ +extern int KARATSUBA_MUL_CUTOFF, + KARATSUBA_SQR_CUTOFF, + TOOM_MUL_CUTOFF, + TOOM_SQR_CUTOFF; + +/* define this to use lower memory usage routines (exptmods mostly) */ +/* We use this to reduce stack usage --nmav */ +#define MP_LOW_MEM + +/* default precision */ +#ifndef MP_PREC + #ifndef MP_LOW_MEM + #define MP_PREC 32 /* default digits of precision */ + #else + #define MP_PREC 8 /* default digits of precision */ + #endif +#endif + +/* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */ +#define MP_WARRAY (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1)) + +/* the infamous mp_int structure */ +typedef struct { + int used, alloc, sign; + mp_digit *dp; +} mp_int; + +/* callback for mp_prime_random, should fill dst with random bytes and return how many read [upto len] */ +typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat); + + +#define USED(m) ((m)->used) +#define DIGIT(m,k) ((m)->dp[(k)]) +#define SIGN(m) ((m)->sign) + +/* error code to char* string */ +char *mp_error_to_string(int code); + +/* ---> init and deinit bignum functions <--- */ +/* init a bignum */ +int mp_init(mp_int *a); + +/* free a bignum */ +void mp_clear(mp_int *a); + +/* init a null terminated series of arguments */ +int mp_init_multi(mp_int *mp, ...); + +/* clear a null terminated series of arguments */ +void mp_clear_multi(mp_int *mp, ...); + +/* exchange two ints */ +void mp_exch(mp_int *a, mp_int *b); + +/* shrink ram required for a bignum */ +int mp_shrink(mp_int *a); + +/* grow an int to a given size */ +int mp_grow(mp_int *a, int size); + +/* init to a given number of digits */ +int mp_init_size(mp_int *a, int size); + +/* ---> Basic Manipulations <--- */ +#define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO) +#define mp_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO) +#define mp_isodd(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO) + +/* set to zero */ +void mp_zero(mp_int *a); + +/* set to a digit */ +void mp_set(mp_int *a, mp_digit b); + +/* set a 32-bit const */ +int mp_set_int(mp_int *a, unsigned long b); + +/* get a 32-bit value */ +unsigned long mp_get_int(mp_int * a); + +/* initialize and set a digit */ +int mp_init_set (mp_int * a, mp_digit b); + +/* initialize and set 32-bit value */ +int mp_init_set_int (mp_int * a, unsigned long b); + +/* copy, b = a */ +int mp_copy(mp_int *a, mp_int *b); + +/* inits and copies, a = b */ +int mp_init_copy(mp_int *a, mp_int *b); + +/* trim unused digits */ +void mp_clamp(mp_int *a); + +/* ---> digit manipulation <--- */ + +/* right shift by "b" digits */ +void mp_rshd(mp_int *a, int b); + +/* left shift by "b" digits */ +int mp_lshd(mp_int *a, int b); + +/* c = a / 2**b */ +int mp_div_2d(mp_int *a, int b, mp_int *c, mp_int *d); + +/* b = a/2 */ +int mp_div_2(mp_int *a, mp_int *b); + +/* c = a * 2**b */ +int mp_mul_2d(mp_int *a, int b, mp_int *c); + +/* b = a*2 */ +int mp_mul_2(mp_int *a, mp_int *b); + +/* c = a mod 2**d */ +int mp_mod_2d(mp_int *a, int b, mp_int *c); + +/* computes a = 2**b */ +int mp_2expt(mp_int *a, int b); + +/* Counts the number of lsbs which are zero before the first zero bit */ +int mp_cnt_lsb(mp_int *a); + +/* I Love Earth! */ + +/* makes a pseudo-random int of a given size */ +int mp_rand(mp_int *a, int digits); + +/* ---> binary operations <--- */ +/* c = a XOR b */ +int mp_xor(mp_int *a, mp_int *b, mp_int *c); + +/* c = a OR b */ +int mp_or(mp_int *a, mp_int *b, mp_int *c); + +/* c = a AND b */ +int mp_and(mp_int *a, mp_int *b, mp_int *c); + +/* ---> Basic arithmetic <--- */ + +/* b = -a */ +int mp_neg(mp_int *a, mp_int *b); + +/* b = |a| */ +int mp_abs(mp_int *a, mp_int *b); + +/* compare a to b */ +int mp_cmp(mp_int *a, mp_int *b); + +/* compare |a| to |b| */ +int mp_cmp_mag(mp_int *a, mp_int *b); + +/* c = a + b */ +int mp_add(mp_int *a, mp_int *b, mp_int *c); + +/* c = a - b */ +int mp_sub(mp_int *a, mp_int *b, mp_int *c); + +/* c = a * b */ +int mp_mul(mp_int *a, mp_int *b, mp_int *c); + +/* b = a*a */ +int mp_sqr(mp_int *a, mp_int *b); + +/* a/b => cb + d == a */ +int mp_div(mp_int *a, mp_int *b, mp_int *c, mp_int *d); + +/* c = a mod b, 0 <= c < b */ +int mp_mod(mp_int *a, mp_int *b, mp_int *c); + +/* ---> single digit functions <--- */ + +/* compare against a single digit */ +int mp_cmp_d(mp_int *a, mp_digit b); + +/* c = a + b */ +int mp_add_d(mp_int *a, mp_digit b, mp_int *c); + +/* c = a - b */ +int mp_sub_d(mp_int *a, mp_digit b, mp_int *c); + +/* c = a * b */ +int mp_mul_d(mp_int *a, mp_digit b, mp_int *c); + +/* a/b => cb + d == a */ +int mp_div_d(mp_int *a, mp_digit b, mp_int *c, mp_digit *d); + +/* a/3 => 3c + d == a */ +int mp_div_3(mp_int *a, mp_int *c, mp_digit *d); + +/* c = a**b */ +int mp_expt_d(mp_int *a, mp_digit b, mp_int *c); + +/* c = a mod b, 0 <= c < b */ +int mp_mod_d(mp_int *a, mp_digit b, mp_digit *c); + +/* ---> number theory <--- */ + +/* d = a + b (mod c) */ +int mp_addmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d); + +/* d = a - b (mod c) */ +int mp_submod(mp_int *a, mp_int *b, mp_int *c, mp_int *d); + +/* d = a * b (mod c) */ +int mp_mulmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d); + +/* c = a * a (mod b) */ +int mp_sqrmod(mp_int *a, mp_int *b, mp_int *c); + +/* c = 1/a (mod b) */ +int mp_invmod(mp_int *a, mp_int *b, mp_int *c); + +/* c = (a, b) */ +int mp_gcd(mp_int *a, mp_int *b, mp_int *c); + +/* produces value such that U1*a + U2*b = U3 */ +int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3); + +/* c = [a, b] or (a*b)/(a, b) */ +int mp_lcm(mp_int *a, mp_int *b, mp_int *c); + +/* finds one of the b'th root of a, such that |c|**b <= |a| + * + * returns error if a < 0 and b is even + */ +int mp_n_root(mp_int *a, mp_digit b, mp_int *c); + +/* special sqrt algo */ +int mp_sqrt(mp_int *arg, mp_int *ret); + +/* is number a square? */ +int mp_is_square(mp_int *arg, int *ret); + +/* computes the jacobi c = (a | n) (or Legendre if b is prime) */ +int mp_jacobi(mp_int *a, mp_int *n, int *c); + +/* used to setup the Barrett reduction for a given modulus b */ +int mp_reduce_setup(mp_int *a, mp_int *b); + +/* Barrett Reduction, computes a (mod b) with a precomputed value c + * + * Assumes that 0 < a <= b*b, note if 0 > a > -(b*b) then you can merely + * compute the reduction as -1 * mp_reduce(mp_abs(a)) [pseudo code]. + */ +int mp_reduce(mp_int *a, mp_int *b, mp_int *c); + +/* setups the montgomery reduction */ +int mp_montgomery_setup(mp_int *a, mp_digit *mp); + +/* computes a = B**n mod b without division or multiplication useful for + * normalizing numbers in a Montgomery system. + */ +int mp_montgomery_calc_normalization(mp_int *a, mp_int *b); + +/* computes x/R == x (mod N) via Montgomery Reduction */ +int mp_montgomery_reduce(mp_int *a, mp_int *m, mp_digit mp); + +/* returns 1 if a is a valid DR modulus */ +int mp_dr_is_modulus(mp_int *a); + +/* sets the value of "d" required for mp_dr_reduce */ +void mp_dr_setup(mp_int *a, mp_digit *d); + +/* reduces a modulo b using the Diminished Radix method */ +int mp_dr_reduce(mp_int *a, mp_int *b, mp_digit mp); + +/* returns true if a can be reduced with mp_reduce_2k */ +int mp_reduce_is_2k(mp_int *a); + +/* determines k value for 2k reduction */ +int mp_reduce_2k_setup(mp_int *a, mp_digit *d); + +/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */ +int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d); + +/* returns true if a can be reduced with mp_reduce_2k_l */ +int mp_reduce_is_2k_l(mp_int *a); + +/* determines k value for 2k reduction */ +int mp_reduce_2k_setup_l(mp_int *a, mp_int *d); + +/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */ +int mp_reduce_2k_l(mp_int *a, mp_int *n, mp_int *d); + +/* d = a**b (mod c) */ +int mp_exptmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d); + +/* ---> Primes <--- */ + +/* number of primes */ +#ifdef MP_8BIT + #define PRIME_SIZE 31 +#else + #define PRIME_SIZE 256 +#endif + +/* table of first PRIME_SIZE primes */ +extern const mp_digit ltm_prime_tab[]; + +/* result=1 if a is divisible by one of the first PRIME_SIZE primes */ +int mp_prime_is_divisible(mp_int *a, int *result); + +/* performs one Fermat test of "a" using base "b". + * Sets result to 0 if composite or 1 if probable prime + */ +int mp_prime_fermat(mp_int *a, mp_int *b, int *result); + +/* performs one Miller-Rabin test of "a" using base "b". + * Sets result to 0 if composite or 1 if probable prime + */ +int mp_prime_miller_rabin(mp_int *a, mp_int *b, int *result); + +/* This gives [for a given bit size] the number of trials required + * such that Miller-Rabin gives a prob of failure lower than 2^-96 + */ +int mp_prime_rabin_miller_trials(int size); + +/* performs t rounds of Miller-Rabin on "a" using the first + * t prime bases. Also performs an initial sieve of trial + * division. Determines if "a" is prime with probability + * of error no more than (1/4)**t. + * + * Sets result to 1 if probably prime, 0 otherwise + */ +int mp_prime_is_prime(mp_int *a, int t, int *result); + +/* finds the next prime after the number "a" using "t" trials + * of Miller-Rabin. + * + * bbs_style = 1 means the prime must be congruent to 3 mod 4 + */ +int mp_prime_next_prime(mp_int *a, int t, int bbs_style); + +/* makes a truly random prime of a given size (bytes), + * call with bbs = 1 if you want it to be congruent to 3 mod 4 + * + * You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can + * have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself + * so it can be NULL + * + * The prime generated will be larger than 2^(8*size). + */ +#define mp_prime_random(a, t, size, bbs, cb, dat) mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat) + +/* makes a truly random prime of a given size (bits), + * + * Flags are as follows: + * + * LTM_PRIME_BBS - make prime congruent to 3 mod 4 + * LTM_PRIME_SAFE - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS) + * LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero + * LTM_PRIME_2MSB_ON - make the 2nd highest bit one + * + * You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can + * have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself + * so it can be NULL + * + */ +int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat); + +/* ---> radix conversion <--- */ +int mp_count_bits(mp_int *a); + +int mp_unsigned_bin_size(mp_int *a); +int mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c); +int mp_to_unsigned_bin(mp_int *a, unsigned char *b); +int mp_to_unsigned_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen); + +int mp_signed_bin_size(mp_int *a); +int mp_read_signed_bin(mp_int *a, const unsigned char *b, int c); +int mp_to_signed_bin(mp_int *a, unsigned char *b); +int mp_to_signed_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen); + +int mp_read_radix(mp_int *a, const char *str, int radix); +int mp_toradix(mp_int *a, char *str, int radix); +int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen); +int mp_radix_size(mp_int *a, int radix, int *size); + +#define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len)) +#define mp_raw_size(mp) mp_signed_bin_size(mp) +#define mp_toraw(mp, str) mp_to_signed_bin((mp), (str)) +#define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len)) +#define mp_mag_size(mp) mp_unsigned_bin_size(mp) +#define mp_tomag(mp, str) mp_to_unsigned_bin((mp), (str)) + +#define mp_tobinary(M, S) mp_toradix((M), (S), 2) +#define mp_tooctal(M, S) mp_toradix((M), (S), 8) +#define mp_todecimal(M, S) mp_toradix((M), (S), 10) +#define mp_tohex(M, S) mp_toradix((M), (S), 16) + +/* lowlevel functions, do not call! */ +int s_mp_add(mp_int *a, mp_int *b, mp_int *c); +int s_mp_sub(mp_int *a, mp_int *b, mp_int *c); +#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1) +int fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs); +int s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs); +int fast_s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs); +int s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs); +int fast_s_mp_sqr(mp_int *a, mp_int *b); +int s_mp_sqr(mp_int *a, mp_int *b); +int mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c); +int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c); +int mp_karatsuba_sqr(mp_int *a, mp_int *b); +int mp_toom_sqr(mp_int *a, mp_int *b); +int fast_mp_invmod(mp_int *a, mp_int *b, mp_int *c); +int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c); +int fast_mp_montgomery_reduce(mp_int *a, mp_int *m, mp_digit mp); +int mp_exptmod_fast(mp_int *G, mp_int *X, mp_int *P, mp_int *Y, int mode); +int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int mode); +void bn_reverse(unsigned char *s, int len); + +extern const char *mp_s_rmap; + +#ifdef __cplusplus + } +#endif + +#endif + + +/* $Source: /cvs/libtom/libtommath/tommath.h,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/03/31 14:18:44 $ */ diff --git a/crypto/userspace/libtommath/tommath_class.h b/crypto/userspace/libtommath/tommath_class.h new file mode 100644 index 0000000..166dd80 --- /dev/null +++ b/crypto/userspace/libtommath/tommath_class.h @@ -0,0 +1,999 @@ +#if !(defined(LTM1) && defined(LTM2) && defined(LTM3)) +#if defined(LTM2) +#define LTM3 +#endif +#if defined(LTM1) +#define LTM2 +#endif +#define LTM1 + +#if defined(LTM_ALL) +#define BN_ERROR_C +#define BN_FAST_MP_INVMOD_C +#define BN_FAST_MP_MONTGOMERY_REDUCE_C +#define BN_FAST_S_MP_MUL_DIGS_C +#define BN_FAST_S_MP_MUL_HIGH_DIGS_C +#define BN_FAST_S_MP_SQR_C +#define BN_MP_2EXPT_C +#define BN_MP_ABS_C +#define BN_MP_ADD_C +#define BN_MP_ADD_D_C +#define BN_MP_ADDMOD_C +#define BN_MP_AND_C +#define BN_MP_CLAMP_C +#define BN_MP_CLEAR_C +#define BN_MP_CLEAR_MULTI_C +#define BN_MP_CMP_C +#define BN_MP_CMP_D_C +#define BN_MP_CMP_MAG_C +#define BN_MP_CNT_LSB_C +#define BN_MP_COPY_C +#define BN_MP_COUNT_BITS_C +#define BN_MP_DIV_C +#define BN_MP_DIV_2_C +#define BN_MP_DIV_2D_C +#define BN_MP_DIV_3_C +#define BN_MP_DIV_D_C +#define BN_MP_DR_IS_MODULUS_C +#define BN_MP_DR_REDUCE_C +#define BN_MP_DR_SETUP_C +#define BN_MP_EXCH_C +#define BN_MP_EXPT_D_C +#define BN_MP_EXPTMOD_C +#define BN_MP_EXPTMOD_FAST_C +#define BN_MP_EXTEUCLID_C +#define BN_MP_FREAD_C +#define BN_MP_FWRITE_C +#define BN_MP_GCD_C +#define BN_MP_GET_INT_C +#define BN_MP_GROW_C +#define BN_MP_INIT_C +#define BN_MP_INIT_COPY_C +#define BN_MP_INIT_MULTI_C +#define BN_MP_INIT_SET_C +#define BN_MP_INIT_SET_INT_C +#define BN_MP_INIT_SIZE_C +#define BN_MP_INVMOD_C +#define BN_MP_INVMOD_SLOW_C +#define BN_MP_IS_SQUARE_C +#define BN_MP_JACOBI_C +#define BN_MP_KARATSUBA_MUL_C +#define BN_MP_KARATSUBA_SQR_C +#define BN_MP_LCM_C +#define BN_MP_LSHD_C +#define BN_MP_MOD_C +#define BN_MP_MOD_2D_C +#define BN_MP_MOD_D_C +#define BN_MP_MONTGOMERY_CALC_NORMALIZATION_C +#define BN_MP_MONTGOMERY_REDUCE_C +#define BN_MP_MONTGOMERY_SETUP_C +#define BN_MP_MUL_C +#define BN_MP_MUL_2_C +#define BN_MP_MUL_2D_C +#define BN_MP_MUL_D_C +#define BN_MP_MULMOD_C +#define BN_MP_N_ROOT_C +#define BN_MP_NEG_C +#define BN_MP_OR_C +#define BN_MP_PRIME_FERMAT_C +#define BN_MP_PRIME_IS_DIVISIBLE_C +#define BN_MP_PRIME_IS_PRIME_C +#define BN_MP_PRIME_MILLER_RABIN_C +#define BN_MP_PRIME_NEXT_PRIME_C +#define BN_MP_PRIME_RABIN_MILLER_TRIALS_C +#define BN_MP_PRIME_RANDOM_EX_C +#define BN_MP_RADIX_SIZE_C +#define BN_MP_RADIX_SMAP_C +#define BN_MP_RAND_C +#define BN_MP_READ_RADIX_C +#define BN_MP_READ_SIGNED_BIN_C +#define BN_MP_READ_UNSIGNED_BIN_C +#define BN_MP_REDUCE_C +#define BN_MP_REDUCE_2K_C +#define BN_MP_REDUCE_2K_L_C +#define BN_MP_REDUCE_2K_SETUP_C +#define BN_MP_REDUCE_2K_SETUP_L_C +#define BN_MP_REDUCE_IS_2K_C +#define BN_MP_REDUCE_IS_2K_L_C +#define BN_MP_REDUCE_SETUP_C +#define BN_MP_RSHD_C +#define BN_MP_SET_C +#define BN_MP_SET_INT_C +#define BN_MP_SHRINK_C +#define BN_MP_SIGNED_BIN_SIZE_C +#define BN_MP_SQR_C +#define BN_MP_SQRMOD_C +#define BN_MP_SQRT_C +#define BN_MP_SUB_C +#define BN_MP_SUB_D_C +#define BN_MP_SUBMOD_C +#define BN_MP_TO_SIGNED_BIN_C +#define BN_MP_TO_SIGNED_BIN_N_C +#define BN_MP_TO_UNSIGNED_BIN_C +#define BN_MP_TO_UNSIGNED_BIN_N_C +#define BN_MP_TOOM_MUL_C +#define BN_MP_TOOM_SQR_C +#define BN_MP_TORADIX_C +#define BN_MP_TORADIX_N_C +#define BN_MP_UNSIGNED_BIN_SIZE_C +#define BN_MP_XOR_C +#define BN_MP_ZERO_C +#define BN_PRIME_TAB_C +#define BN_REVERSE_C +#define BN_S_MP_ADD_C +#define BN_S_MP_EXPTMOD_C +#define BN_S_MP_MUL_DIGS_C +#define BN_S_MP_MUL_HIGH_DIGS_C +#define BN_S_MP_SQR_C +#define BN_S_MP_SUB_C +#define BNCORE_C +#endif + +#if defined(BN_ERROR_C) + #define BN_MP_ERROR_TO_STRING_C +#endif + +#if defined(BN_FAST_MP_INVMOD_C) + #define BN_MP_ISEVEN_C + #define BN_MP_INIT_MULTI_C + #define BN_MP_COPY_C + #define BN_MP_MOD_C + #define BN_MP_SET_C + #define BN_MP_DIV_2_C + #define BN_MP_ISODD_C + #define BN_MP_SUB_C + #define BN_MP_CMP_C + #define BN_MP_ISZERO_C + #define BN_MP_CMP_D_C + #define BN_MP_ADD_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_FAST_MP_MONTGOMERY_REDUCE_C) + #define BN_MP_GROW_C + #define BN_MP_RSHD_C + #define BN_MP_CLAMP_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_FAST_S_MP_MUL_DIGS_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_FAST_S_MP_MUL_HIGH_DIGS_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_FAST_S_MP_SQR_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_2EXPT_C) + #define BN_MP_ZERO_C + #define BN_MP_GROW_C +#endif + +#if defined(BN_MP_ABS_C) + #define BN_MP_COPY_C +#endif + +#if defined(BN_MP_ADD_C) + #define BN_S_MP_ADD_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_ADD_D_C) + #define BN_MP_GROW_C + #define BN_MP_SUB_D_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_ADDMOD_C) + #define BN_MP_INIT_C + #define BN_MP_ADD_C + #define BN_MP_CLEAR_C + #define BN_MP_MOD_C +#endif + +#if defined(BN_MP_AND_C) + #define BN_MP_INIT_COPY_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_CLAMP_C) +#endif + +#if defined(BN_MP_CLEAR_C) +#endif + +#if defined(BN_MP_CLEAR_MULTI_C) + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_CMP_C) + #define BN_MP_CMP_MAG_C +#endif + +#if defined(BN_MP_CMP_D_C) +#endif + +#if defined(BN_MP_CMP_MAG_C) +#endif + +#if defined(BN_MP_CNT_LSB_C) + #define BN_MP_ISZERO_C +#endif + +#if defined(BN_MP_COPY_C) + #define BN_MP_GROW_C +#endif + +#if defined(BN_MP_COUNT_BITS_C) +#endif + +#if defined(BN_MP_DIV_C) + #define BN_MP_ISZERO_C + #define BN_MP_CMP_MAG_C + #define BN_MP_COPY_C + #define BN_MP_ZERO_C + #define BN_MP_INIT_MULTI_C + #define BN_MP_SET_C + #define BN_MP_COUNT_BITS_C + #define BN_MP_ABS_C + #define BN_MP_MUL_2D_C + #define BN_MP_CMP_C + #define BN_MP_SUB_C + #define BN_MP_ADD_C + #define BN_MP_DIV_2D_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_MULTI_C + #define BN_MP_INIT_SIZE_C + #define BN_MP_INIT_C + #define BN_MP_INIT_COPY_C + #define BN_MP_LSHD_C + #define BN_MP_RSHD_C + #define BN_MP_MUL_D_C + #define BN_MP_CLAMP_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_DIV_2_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_DIV_2D_C) + #define BN_MP_COPY_C + #define BN_MP_ZERO_C + #define BN_MP_INIT_C + #define BN_MP_MOD_2D_C + #define BN_MP_CLEAR_C + #define BN_MP_RSHD_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C +#endif + +#if defined(BN_MP_DIV_3_C) + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_DIV_D_C) + #define BN_MP_ISZERO_C + #define BN_MP_COPY_C + #define BN_MP_DIV_2D_C + #define BN_MP_DIV_3_C + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_DR_IS_MODULUS_C) +#endif + +#if defined(BN_MP_DR_REDUCE_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_DR_SETUP_C) +#endif + +#if defined(BN_MP_EXCH_C) +#endif + +#if defined(BN_MP_EXPT_D_C) + #define BN_MP_INIT_COPY_C + #define BN_MP_SET_C + #define BN_MP_SQR_C + #define BN_MP_CLEAR_C + #define BN_MP_MUL_C +#endif + +#if defined(BN_MP_EXPTMOD_C) + #define BN_MP_INIT_C + #define BN_MP_INVMOD_C + #define BN_MP_CLEAR_C + #define BN_MP_ABS_C + #define BN_MP_CLEAR_MULTI_C + #define BN_MP_REDUCE_IS_2K_L_C + #define BN_S_MP_EXPTMOD_C + #define BN_MP_DR_IS_MODULUS_C + #define BN_MP_REDUCE_IS_2K_C + #define BN_MP_ISODD_C + #define BN_MP_EXPTMOD_FAST_C +#endif + +#if defined(BN_MP_EXPTMOD_FAST_C) + #define BN_MP_COUNT_BITS_C + #define BN_MP_INIT_C + #define BN_MP_CLEAR_C + #define BN_MP_MONTGOMERY_SETUP_C + #define BN_FAST_MP_MONTGOMERY_REDUCE_C + #define BN_MP_MONTGOMERY_REDUCE_C + #define BN_MP_DR_SETUP_C + #define BN_MP_DR_REDUCE_C + #define BN_MP_REDUCE_2K_SETUP_C + #define BN_MP_REDUCE_2K_C + #define BN_MP_MONTGOMERY_CALC_NORMALIZATION_C + #define BN_MP_MULMOD_C + #define BN_MP_SET_C + #define BN_MP_MOD_C + #define BN_MP_COPY_C + #define BN_MP_SQR_C + #define BN_MP_MUL_C + #define BN_MP_EXCH_C +#endif + +#if defined(BN_MP_EXTEUCLID_C) + #define BN_MP_INIT_MULTI_C + #define BN_MP_SET_C + #define BN_MP_COPY_C + #define BN_MP_ISZERO_C + #define BN_MP_DIV_C + #define BN_MP_MUL_C + #define BN_MP_SUB_C + #define BN_MP_NEG_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_MP_FREAD_C) + #define BN_MP_ZERO_C + #define BN_MP_S_RMAP_C + #define BN_MP_MUL_D_C + #define BN_MP_ADD_D_C + #define BN_MP_CMP_D_C +#endif + +#if defined(BN_MP_FWRITE_C) + #define BN_MP_RADIX_SIZE_C + #define BN_MP_TORADIX_C +#endif + +#if defined(BN_MP_GCD_C) + #define BN_MP_ISZERO_C + #define BN_MP_ABS_C + #define BN_MP_ZERO_C + #define BN_MP_INIT_COPY_C + #define BN_MP_CNT_LSB_C + #define BN_MP_DIV_2D_C + #define BN_MP_CMP_MAG_C + #define BN_MP_EXCH_C + #define BN_S_MP_SUB_C + #define BN_MP_MUL_2D_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_GET_INT_C) +#endif + +#if defined(BN_MP_GROW_C) +#endif + +#if defined(BN_MP_INIT_C) +#endif + +#if defined(BN_MP_INIT_COPY_C) + #define BN_MP_COPY_C +#endif + +#if defined(BN_MP_INIT_MULTI_C) + #define BN_MP_ERR_C + #define BN_MP_INIT_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_INIT_SET_C) + #define BN_MP_INIT_C + #define BN_MP_SET_C +#endif + +#if defined(BN_MP_INIT_SET_INT_C) + #define BN_MP_INIT_C + #define BN_MP_SET_INT_C +#endif + +#if defined(BN_MP_INIT_SIZE_C) + #define BN_MP_INIT_C +#endif + +#if defined(BN_MP_INVMOD_C) + #define BN_MP_ISZERO_C + #define BN_MP_ISODD_C + #define BN_FAST_MP_INVMOD_C + #define BN_MP_INVMOD_SLOW_C +#endif + +#if defined(BN_MP_INVMOD_SLOW_C) + #define BN_MP_ISZERO_C + #define BN_MP_INIT_MULTI_C + #define BN_MP_MOD_C + #define BN_MP_COPY_C + #define BN_MP_ISEVEN_C + #define BN_MP_SET_C + #define BN_MP_DIV_2_C + #define BN_MP_ISODD_C + #define BN_MP_ADD_C + #define BN_MP_SUB_C + #define BN_MP_CMP_C + #define BN_MP_CMP_D_C + #define BN_MP_CMP_MAG_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_MP_IS_SQUARE_C) + #define BN_MP_MOD_D_C + #define BN_MP_INIT_SET_INT_C + #define BN_MP_MOD_C + #define BN_MP_GET_INT_C + #define BN_MP_SQRT_C + #define BN_MP_SQR_C + #define BN_MP_CMP_MAG_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_JACOBI_C) + #define BN_MP_CMP_D_C + #define BN_MP_ISZERO_C + #define BN_MP_INIT_COPY_C + #define BN_MP_CNT_LSB_C + #define BN_MP_DIV_2D_C + #define BN_MP_MOD_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_KARATSUBA_MUL_C) + #define BN_MP_MUL_C + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_SUB_C + #define BN_MP_ADD_C + #define BN_MP_LSHD_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_KARATSUBA_SQR_C) + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_SQR_C + #define BN_MP_SUB_C + #define BN_S_MP_ADD_C + #define BN_MP_LSHD_C + #define BN_MP_ADD_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_LCM_C) + #define BN_MP_INIT_MULTI_C + #define BN_MP_GCD_C + #define BN_MP_CMP_MAG_C + #define BN_MP_DIV_C + #define BN_MP_MUL_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_MP_LSHD_C) + #define BN_MP_GROW_C + #define BN_MP_RSHD_C +#endif + +#if defined(BN_MP_MOD_C) + #define BN_MP_INIT_C + #define BN_MP_DIV_C + #define BN_MP_CLEAR_C + #define BN_MP_ADD_C + #define BN_MP_EXCH_C +#endif + +#if defined(BN_MP_MOD_2D_C) + #define BN_MP_ZERO_C + #define BN_MP_COPY_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_MOD_D_C) + #define BN_MP_DIV_D_C +#endif + +#if defined(BN_MP_MONTGOMERY_CALC_NORMALIZATION_C) + #define BN_MP_COUNT_BITS_C + #define BN_MP_2EXPT_C + #define BN_MP_SET_C + #define BN_MP_MUL_2_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_MONTGOMERY_REDUCE_C) + #define BN_FAST_MP_MONTGOMERY_REDUCE_C + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C + #define BN_MP_RSHD_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_MONTGOMERY_SETUP_C) +#endif + +#if defined(BN_MP_MUL_C) + #define BN_MP_TOOM_MUL_C + #define BN_MP_KARATSUBA_MUL_C + #define BN_FAST_S_MP_MUL_DIGS_C + #define BN_S_MP_MUL_C + #define BN_S_MP_MUL_DIGS_C +#endif + +#if defined(BN_MP_MUL_2_C) + #define BN_MP_GROW_C +#endif + +#if defined(BN_MP_MUL_2D_C) + #define BN_MP_COPY_C + #define BN_MP_GROW_C + #define BN_MP_LSHD_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_MUL_D_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_MULMOD_C) + #define BN_MP_INIT_C + #define BN_MP_MUL_C + #define BN_MP_CLEAR_C + #define BN_MP_MOD_C +#endif + +#if defined(BN_MP_N_ROOT_C) + #define BN_MP_INIT_C + #define BN_MP_SET_C + #define BN_MP_COPY_C + #define BN_MP_EXPT_D_C + #define BN_MP_MUL_C + #define BN_MP_SUB_C + #define BN_MP_MUL_D_C + #define BN_MP_DIV_C + #define BN_MP_CMP_C + #define BN_MP_SUB_D_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_NEG_C) + #define BN_MP_COPY_C + #define BN_MP_ISZERO_C +#endif + +#if defined(BN_MP_OR_C) + #define BN_MP_INIT_COPY_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_PRIME_FERMAT_C) + #define BN_MP_CMP_D_C + #define BN_MP_INIT_C + #define BN_MP_EXPTMOD_C + #define BN_MP_CMP_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_PRIME_IS_DIVISIBLE_C) + #define BN_MP_MOD_D_C +#endif + +#if defined(BN_MP_PRIME_IS_PRIME_C) + #define BN_MP_CMP_D_C + #define BN_MP_PRIME_IS_DIVISIBLE_C + #define BN_MP_INIT_C + #define BN_MP_SET_C + #define BN_MP_PRIME_MILLER_RABIN_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_PRIME_MILLER_RABIN_C) + #define BN_MP_CMP_D_C + #define BN_MP_INIT_COPY_C + #define BN_MP_SUB_D_C + #define BN_MP_CNT_LSB_C + #define BN_MP_DIV_2D_C + #define BN_MP_EXPTMOD_C + #define BN_MP_CMP_C + #define BN_MP_SQRMOD_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_PRIME_NEXT_PRIME_C) + #define BN_MP_CMP_D_C + #define BN_MP_SET_C + #define BN_MP_SUB_D_C + #define BN_MP_ISEVEN_C + #define BN_MP_MOD_D_C + #define BN_MP_INIT_C + #define BN_MP_ADD_D_C + #define BN_MP_PRIME_MILLER_RABIN_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_PRIME_RABIN_MILLER_TRIALS_C) +#endif + +#if defined(BN_MP_PRIME_RANDOM_EX_C) + #define BN_MP_READ_UNSIGNED_BIN_C + #define BN_MP_PRIME_IS_PRIME_C + #define BN_MP_SUB_D_C + #define BN_MP_DIV_2_C + #define BN_MP_MUL_2_C + #define BN_MP_ADD_D_C +#endif + +#if defined(BN_MP_RADIX_SIZE_C) + #define BN_MP_COUNT_BITS_C + #define BN_MP_INIT_COPY_C + #define BN_MP_ISZERO_C + #define BN_MP_DIV_D_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_RADIX_SMAP_C) + #define BN_MP_S_RMAP_C +#endif + +#if defined(BN_MP_RAND_C) + #define BN_MP_ZERO_C + #define BN_MP_ADD_D_C + #define BN_MP_LSHD_C +#endif + +#if defined(BN_MP_READ_RADIX_C) + #define BN_MP_ZERO_C + #define BN_MP_S_RMAP_C + #define BN_MP_RADIX_SMAP_C + #define BN_MP_MUL_D_C + #define BN_MP_ADD_D_C + #define BN_MP_ISZERO_C +#endif + +#if defined(BN_MP_READ_SIGNED_BIN_C) + #define BN_MP_READ_UNSIGNED_BIN_C +#endif + +#if defined(BN_MP_READ_UNSIGNED_BIN_C) + #define BN_MP_GROW_C + #define BN_MP_ZERO_C + #define BN_MP_MUL_2D_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_REDUCE_C) + #define BN_MP_REDUCE_SETUP_C + #define BN_MP_INIT_COPY_C + #define BN_MP_RSHD_C + #define BN_MP_MUL_C + #define BN_S_MP_MUL_HIGH_DIGS_C + #define BN_FAST_S_MP_MUL_HIGH_DIGS_C + #define BN_MP_MOD_2D_C + #define BN_S_MP_MUL_DIGS_C + #define BN_MP_SUB_C + #define BN_MP_CMP_D_C + #define BN_MP_SET_C + #define BN_MP_LSHD_C + #define BN_MP_ADD_C + #define BN_MP_CMP_C + #define BN_S_MP_SUB_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_REDUCE_2K_C) + #define BN_MP_INIT_C + #define BN_MP_COUNT_BITS_C + #define BN_MP_DIV_2D_C + #define BN_MP_MUL_D_C + #define BN_S_MP_ADD_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_REDUCE_2K_L_C) + #define BN_MP_INIT_C + #define BN_MP_COUNT_BITS_C + #define BN_MP_DIV_2D_C + #define BN_MP_MUL_C + #define BN_S_MP_ADD_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_REDUCE_2K_SETUP_C) + #define BN_MP_INIT_C + #define BN_MP_COUNT_BITS_C + #define BN_MP_2EXPT_C + #define BN_MP_CLEAR_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_REDUCE_2K_SETUP_L_C) + #define BN_MP_INIT_C + #define BN_MP_2EXPT_C + #define BN_MP_COUNT_BITS_C + #define BN_S_MP_SUB_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_REDUCE_IS_2K_C) + #define BN_MP_REDUCE_2K_C + #define BN_MP_COUNT_BITS_C +#endif + +#if defined(BN_MP_REDUCE_IS_2K_L_C) +#endif + +#if defined(BN_MP_REDUCE_SETUP_C) + #define BN_MP_2EXPT_C + #define BN_MP_DIV_C +#endif + +#if defined(BN_MP_RSHD_C) + #define BN_MP_ZERO_C +#endif + +#if defined(BN_MP_SET_C) + #define BN_MP_ZERO_C +#endif + +#if defined(BN_MP_SET_INT_C) + #define BN_MP_ZERO_C + #define BN_MP_MUL_2D_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_SHRINK_C) +#endif + +#if defined(BN_MP_SIGNED_BIN_SIZE_C) + #define BN_MP_UNSIGNED_BIN_SIZE_C +#endif + +#if defined(BN_MP_SQR_C) + #define BN_MP_TOOM_SQR_C + #define BN_MP_KARATSUBA_SQR_C + #define BN_FAST_S_MP_SQR_C + #define BN_S_MP_SQR_C +#endif + +#if defined(BN_MP_SQRMOD_C) + #define BN_MP_INIT_C + #define BN_MP_SQR_C + #define BN_MP_CLEAR_C + #define BN_MP_MOD_C +#endif + +#if defined(BN_MP_SQRT_C) + #define BN_MP_N_ROOT_C + #define BN_MP_ISZERO_C + #define BN_MP_ZERO_C + #define BN_MP_INIT_COPY_C + #define BN_MP_RSHD_C + #define BN_MP_DIV_C + #define BN_MP_ADD_C + #define BN_MP_DIV_2_C + #define BN_MP_CMP_MAG_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_SUB_C) + #define BN_S_MP_ADD_C + #define BN_MP_CMP_MAG_C + #define BN_S_MP_SUB_C +#endif + +#if defined(BN_MP_SUB_D_C) + #define BN_MP_GROW_C + #define BN_MP_ADD_D_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_MP_SUBMOD_C) + #define BN_MP_INIT_C + #define BN_MP_SUB_C + #define BN_MP_CLEAR_C + #define BN_MP_MOD_C +#endif + +#if defined(BN_MP_TO_SIGNED_BIN_C) + #define BN_MP_TO_UNSIGNED_BIN_C +#endif + +#if defined(BN_MP_TO_SIGNED_BIN_N_C) + #define BN_MP_SIGNED_BIN_SIZE_C + #define BN_MP_TO_SIGNED_BIN_C +#endif + +#if defined(BN_MP_TO_UNSIGNED_BIN_C) + #define BN_MP_INIT_COPY_C + #define BN_MP_ISZERO_C + #define BN_MP_DIV_2D_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_TO_UNSIGNED_BIN_N_C) + #define BN_MP_UNSIGNED_BIN_SIZE_C + #define BN_MP_TO_UNSIGNED_BIN_C +#endif + +#if defined(BN_MP_TOOM_MUL_C) + #define BN_MP_INIT_MULTI_C + #define BN_MP_MOD_2D_C + #define BN_MP_COPY_C + #define BN_MP_RSHD_C + #define BN_MP_MUL_C + #define BN_MP_MUL_2_C + #define BN_MP_ADD_C + #define BN_MP_SUB_C + #define BN_MP_DIV_2_C + #define BN_MP_MUL_2D_C + #define BN_MP_MUL_D_C + #define BN_MP_DIV_3_C + #define BN_MP_LSHD_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_MP_TOOM_SQR_C) + #define BN_MP_INIT_MULTI_C + #define BN_MP_MOD_2D_C + #define BN_MP_COPY_C + #define BN_MP_RSHD_C + #define BN_MP_SQR_C + #define BN_MP_MUL_2_C + #define BN_MP_ADD_C + #define BN_MP_SUB_C + #define BN_MP_DIV_2_C + #define BN_MP_MUL_2D_C + #define BN_MP_MUL_D_C + #define BN_MP_DIV_3_C + #define BN_MP_LSHD_C + #define BN_MP_CLEAR_MULTI_C +#endif + +#if defined(BN_MP_TORADIX_C) + #define BN_MP_ISZERO_C + #define BN_MP_INIT_COPY_C + #define BN_MP_DIV_D_C + #define BN_MP_CLEAR_C + #define BN_MP_S_RMAP_C +#endif + +#if defined(BN_MP_TORADIX_N_C) + #define BN_MP_ISZERO_C + #define BN_MP_INIT_COPY_C + #define BN_MP_DIV_D_C + #define BN_MP_CLEAR_C + #define BN_MP_S_RMAP_C +#endif + +#if defined(BN_MP_UNSIGNED_BIN_SIZE_C) + #define BN_MP_COUNT_BITS_C +#endif + +#if defined(BN_MP_XOR_C) + #define BN_MP_INIT_COPY_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_MP_ZERO_C) +#endif + +#if defined(BN_PRIME_TAB_C) +#endif + +#if defined(BN_REVERSE_C) +#endif + +#if defined(BN_S_MP_ADD_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BN_S_MP_EXPTMOD_C) + #define BN_MP_COUNT_BITS_C + #define BN_MP_INIT_C + #define BN_MP_CLEAR_C + #define BN_MP_REDUCE_SETUP_C + #define BN_MP_REDUCE_C + #define BN_MP_REDUCE_2K_SETUP_L_C + #define BN_MP_REDUCE_2K_L_C + #define BN_MP_MOD_C + #define BN_MP_COPY_C + #define BN_MP_SQR_C + #define BN_MP_MUL_C + #define BN_MP_SET_C + #define BN_MP_EXCH_C +#endif + +#if defined(BN_S_MP_MUL_DIGS_C) + #define BN_FAST_S_MP_MUL_DIGS_C + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_S_MP_MUL_HIGH_DIGS_C) + #define BN_FAST_S_MP_MUL_HIGH_DIGS_C + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_S_MP_SQR_C) + #define BN_MP_INIT_SIZE_C + #define BN_MP_CLAMP_C + #define BN_MP_EXCH_C + #define BN_MP_CLEAR_C +#endif + +#if defined(BN_S_MP_SUB_C) + #define BN_MP_GROW_C + #define BN_MP_CLAMP_C +#endif + +#if defined(BNCORE_C) +#endif + +#ifdef LTM3 +#define LTM_LAST +#endif +#include +#include +#else +#define LTM_LAST +#endif + +/* $Source: /cvs/libtom/libtommath/tommath_class.h,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2005/07/28 11:59:32 $ */ diff --git a/crypto/userspace/libtommath/tommath_superclass.h b/crypto/userspace/libtommath/tommath_superclass.h new file mode 100644 index 0000000..2fdebe6 --- /dev/null +++ b/crypto/userspace/libtommath/tommath_superclass.h @@ -0,0 +1,76 @@ +/* super class file for PK algos */ + +/* default ... include all MPI */ +#define LTM_ALL + +/* RSA only (does not support DH/DSA/ECC) */ +/* #define SC_RSA_1 */ + +/* For reference.... On an Athlon64 optimizing for speed... + + LTM's mpi.o with all functions [striped] is 142KiB in size. + +*/ + +/* Works for RSA only, mpi.o is 68KiB */ +#ifdef SC_RSA_1 + #define BN_MP_SHRINK_C + #define BN_MP_LCM_C + #define BN_MP_PRIME_RANDOM_EX_C + #define BN_MP_INVMOD_C + #define BN_MP_GCD_C + #define BN_MP_MOD_C + #define BN_MP_MULMOD_C + #define BN_MP_ADDMOD_C + #define BN_MP_EXPTMOD_C + #define BN_MP_SET_INT_C + #define BN_MP_INIT_MULTI_C + #define BN_MP_CLEAR_MULTI_C + #define BN_MP_UNSIGNED_BIN_SIZE_C + #define BN_MP_TO_UNSIGNED_BIN_C + #define BN_MP_MOD_D_C + #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C + #define BN_REVERSE_C + #define BN_PRIME_TAB_C + + /* other modifiers */ + #define BN_MP_DIV_SMALL /* Slower division, not critical */ + + /* here we are on the last pass so we turn things off. The functions classes are still there + * but we remove them specifically from the build. This also invokes tweaks in functions + * like removing support for even moduli, etc... + */ +#ifdef LTM_LAST + #undef BN_MP_TOOM_MUL_C + #undef BN_MP_TOOM_SQR_C + #undef BN_MP_KARATSUBA_MUL_C + #undef BN_MP_KARATSUBA_SQR_C + #undef BN_MP_REDUCE_C + #undef BN_MP_REDUCE_SETUP_C + #undef BN_MP_DR_IS_MODULUS_C + #undef BN_MP_DR_SETUP_C + #undef BN_MP_DR_REDUCE_C + #undef BN_MP_REDUCE_IS_2K_C + #undef BN_MP_REDUCE_2K_SETUP_C + #undef BN_MP_REDUCE_2K_C + #undef BN_S_MP_EXPTMOD_C + #undef BN_MP_DIV_3_C + #undef BN_S_MP_MUL_HIGH_DIGS_C + #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C + #undef BN_FAST_MP_INVMOD_C + + /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold + * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines] + * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without + * trouble. + */ + #undef BN_S_MP_MUL_DIGS_C + #undef BN_S_MP_SQR_C + #undef BN_MP_MONTGOMERY_REDUCE_C +#endif + +#endif + +/* $Source: /cvs/libtom/libtommath/tommath_superclass.h,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2005/05/14 13:29:17 $ */