#define LTC_SOURCE /* 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://libtomcrypt.com */ #include "tomcrypt.h" /** @param sha512.c SHA512 by Tom St Denis */ #ifdef SHA512 const struct ltc_hash_descriptor sha512_desc = { "sha512", 5, 64, 128, /* OID */ { 2, 16, 840, 1, 101, 3, 4, 2, 3, }, 9, &sha512_init, &sha512_process, &sha512_done, &sha512_test, NULL }; /* the K array */ static const ulong64 K[80] = { CONST64(0x428a2f98d728ae22), CONST64(0x7137449123ef65cd), CONST64(0xb5c0fbcfec4d3b2f), CONST64(0xe9b5dba58189dbbc), CONST64(0x3956c25bf348b538), CONST64(0x59f111f1b605d019), CONST64(0x923f82a4af194f9b), CONST64(0xab1c5ed5da6d8118), CONST64(0xd807aa98a3030242), CONST64(0x12835b0145706fbe), CONST64(0x243185be4ee4b28c), CONST64(0x550c7dc3d5ffb4e2), CONST64(0x72be5d74f27b896f), CONST64(0x80deb1fe3b1696b1), CONST64(0x9bdc06a725c71235), CONST64(0xc19bf174cf692694), CONST64(0xe49b69c19ef14ad2), CONST64(0xefbe4786384f25e3), CONST64(0x0fc19dc68b8cd5b5), CONST64(0x240ca1cc77ac9c65), CONST64(0x2de92c6f592b0275), CONST64(0x4a7484aa6ea6e483), CONST64(0x5cb0a9dcbd41fbd4), CONST64(0x76f988da831153b5), CONST64(0x983e5152ee66dfab), CONST64(0xa831c66d2db43210), CONST64(0xb00327c898fb213f), CONST64(0xbf597fc7beef0ee4), CONST64(0xc6e00bf33da88fc2), CONST64(0xd5a79147930aa725), CONST64(0x06ca6351e003826f), CONST64(0x142929670a0e6e70), CONST64(0x27b70a8546d22ffc), CONST64(0x2e1b21385c26c926), CONST64(0x4d2c6dfc5ac42aed), CONST64(0x53380d139d95b3df), CONST64(0x650a73548baf63de), CONST64(0x766a0abb3c77b2a8), CONST64(0x81c2c92e47edaee6), CONST64(0x92722c851482353b), CONST64(0xa2bfe8a14cf10364), CONST64(0xa81a664bbc423001), CONST64(0xc24b8b70d0f89791), CONST64(0xc76c51a30654be30), CONST64(0xd192e819d6ef5218), CONST64(0xd69906245565a910), CONST64(0xf40e35855771202a), CONST64(0x106aa07032bbd1b8), CONST64(0x19a4c116b8d2d0c8), CONST64(0x1e376c085141ab53), CONST64(0x2748774cdf8eeb99), CONST64(0x34b0bcb5e19b48a8), CONST64(0x391c0cb3c5c95a63), CONST64(0x4ed8aa4ae3418acb), CONST64(0x5b9cca4f7763e373), CONST64(0x682e6ff3d6b2b8a3), CONST64(0x748f82ee5defb2fc), CONST64(0x78a5636f43172f60), CONST64(0x84c87814a1f0ab72), CONST64(0x8cc702081a6439ec), CONST64(0x90befffa23631e28), CONST64(0xa4506cebde82bde9), CONST64(0xbef9a3f7b2c67915), CONST64(0xc67178f2e372532b), CONST64(0xca273eceea26619c), CONST64(0xd186b8c721c0c207), CONST64(0xeada7dd6cde0eb1e), CONST64(0xf57d4f7fee6ed178), CONST64(0x06f067aa72176fba), CONST64(0x0a637dc5a2c898a6), CONST64(0x113f9804bef90dae), CONST64(0x1b710b35131c471b), CONST64(0x28db77f523047d84), CONST64(0x32caab7b40c72493), CONST64(0x3c9ebe0a15c9bebc), CONST64(0x431d67c49c100d4c), CONST64(0x4cc5d4becb3e42b6), CONST64(0x597f299cfc657e2a), CONST64(0x5fcb6fab3ad6faec), CONST64(0x6c44198c4a475817) }; /* Various logical functions */ #define Ch(x,y,z) (z ^ (x & (y ^ z))) #define Maj(x,y,z) (((x | y) & z) | (x & y)) #define S(x, n) ROR64c(x, n) #define R(x, n) (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)n)) #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39)) #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41)) #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7)) #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6)) /* compress 1024-bits */ #ifdef LTC_CLEAN_STACK static int _sha512_compress(hash_state * md, unsigned char *buf) #else static int sha512_compress(hash_state * md, unsigned char *buf) #endif { ulong64 S[8], W[80], t0, t1; int i; /* copy state into S */ for (i = 0; i < 8; i++) { S[i] = md->sha512.state[i]; } /* copy the state into 1024-bits into W[0..15] */ for (i = 0; i < 16; i++) { LOAD64H(W[i], buf + (8*i)); } /* fill W[16..79] */ for (i = 16; i < 80; i++) { W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]; } /* Compress */ #ifdef LTC_SMALL_CODE for (i = 0; i < 80; i++) { t0 = S[7] + Sigma1(S[4]) + Ch(S[4], S[5], S[6]) + K[i] + W[i]; t1 = Sigma0(S[0]) + Maj(S[0], S[1], S[2]); S[7] = S[6]; S[6] = S[5]; S[5] = S[4]; S[4] = S[3] + t0; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t0 + t1; } #else #define RND(a,b,c,d,e,f,g,h,i) \ t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \ t1 = Sigma0(a) + Maj(a, b, c); \ d += t0; \ h = t0 + t1; for (i = 0; i < 80; i += 8) { RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0); RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1); RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2); RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3); RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4); RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5); RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6); RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7); } #endif /* feedback */ for (i = 0; i < 8; i++) { md->sha512.state[i] = md->sha512.state[i] + S[i]; } return CRYPT_OK; } /* compress 1024-bits */ #ifdef LTC_CLEAN_STACK static int sha512_compress(hash_state * md, unsigned char *buf) { int err; err = _sha512_compress(md, buf); burn_stack(sizeof(ulong64) * 90 + sizeof(int)); return err; } #endif /** Initialize the hash state @param md The hash state you wish to initialize @return CRYPT_OK if successful */ int sha512_init(hash_state * md) { LTC_ARGCHK(md != NULL); md->sha512.curlen = 0; md->sha512.length = 0; md->sha512.state[0] = CONST64(0x6a09e667f3bcc908); md->sha512.state[1] = CONST64(0xbb67ae8584caa73b); md->sha512.state[2] = CONST64(0x3c6ef372fe94f82b); md->sha512.state[3] = CONST64(0xa54ff53a5f1d36f1); md->sha512.state[4] = CONST64(0x510e527fade682d1); md->sha512.state[5] = CONST64(0x9b05688c2b3e6c1f); md->sha512.state[6] = CONST64(0x1f83d9abfb41bd6b); md->sha512.state[7] = CONST64(0x5be0cd19137e2179); return CRYPT_OK; } /** Process a block of memory though the hash @param md The hash state @param in The data to hash @param inlen The length of the data (octets) @return CRYPT_OK if successful */ HASH_PROCESS(sha512_process, sha512_compress, sha512, 128) /** Terminate the hash to get the digest @param md The hash state @param out [out] The destination of the hash (64 bytes) @return CRYPT_OK if successful */ int sha512_done(hash_state * md, unsigned char *out) { int i; LTC_ARGCHK(md != NULL); LTC_ARGCHK(out != NULL); if (md->sha512.curlen >= sizeof(md->sha512.buf)) { return CRYPT_INVALID_ARG; } /* increase the length of the message */ md->sha512.length += md->sha512.curlen * CONST64(8); /* append the '1' bit */ md->sha512.buf[md->sha512.curlen++] = (unsigned char)0x80; /* if the length is currently above 112 bytes we append zeros * then compress. Then we can fall back to padding zeros and length * encoding like normal. */ if (md->sha512.curlen > 112) { while (md->sha512.curlen < 128) { md->sha512.buf[md->sha512.curlen++] = (unsigned char)0; } sha512_compress(md, md->sha512.buf); md->sha512.curlen = 0; } /* pad upto 120 bytes of zeroes * note: that from 112 to 120 is the 64 MSB of the length. We assume that you won't hash * > 2^64 bits of data... :-) */ while (md->sha512.curlen < 120) { md->sha512.buf[md->sha512.curlen++] = (unsigned char)0; } /* store length */ STORE64H(md->sha512.length, md->sha512.buf+120); sha512_compress(md, md->sha512.buf); /* copy output */ for (i = 0; i < 8; i++) { STORE64H(md->sha512.state[i], out+(8*i)); } #ifdef LTC_CLEAN_STACK zeromem(md, sizeof(hash_state)); #endif return CRYPT_OK; } /** Self-test the hash @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled */ int sha512_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else static const struct { char *msg; unsigned char hash[64]; } tests[] = { { "abc", { 0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba, 0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31, 0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2, 0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a, 0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8, 0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd, 0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e, 0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f } }, { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", { 0x8e, 0x95, 0x9b, 0x75, 0xda, 0xe3, 0x13, 0xda, 0x8c, 0xf4, 0xf7, 0x28, 0x14, 0xfc, 0x14, 0x3f, 0x8f, 0x77, 0x79, 0xc6, 0xeb, 0x9f, 0x7f, 0xa1, 0x72, 0x99, 0xae, 0xad, 0xb6, 0x88, 0x90, 0x18, 0x50, 0x1d, 0x28, 0x9e, 0x49, 0x00, 0xf7, 0xe4, 0x33, 0x1b, 0x99, 0xde, 0xc4, 0xb5, 0x43, 0x3a, 0xc7, 0xd3, 0x29, 0xee, 0xb6, 0xdd, 0x26, 0x54, 0x5e, 0x96, 0xe5, 0x5b, 0x87, 0x4b, 0xe9, 0x09 } }, }; int i; unsigned char tmp[64]; hash_state md; for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) { sha512_init(&md); sha512_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); sha512_done(&md, tmp); if (XMEMCMP(tmp, tests[i].hash, 64) != 0) { return CRYPT_FAIL_TESTVECTOR; } } return CRYPT_OK; #endif } #ifdef SHA384 #include "sha384.c" #endif #endif /* $Source: /cvs/libtom/libtomcrypt/src/hashes/sha2/sha512.c,v $ */ /* $Revision: 1.8 $ */ /* $Date: 2006/11/01 09:28:17 $ */