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442 lines
14 KiB
442 lines
14 KiB
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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*
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* LibTomCrypt is a library that provides various cryptographic
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* algorithms in a highly modular and flexible manner.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*
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* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
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*/
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#include "tomcrypt.h"
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/**
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@file sha256.c
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LTC_SHA256 by Tom St Denis
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*/
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//#ifdef LTC_SHA256
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const struct ltc_hash_descriptor sha256_desc =
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{
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"sha256",
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0,
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32,
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64,
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/* OID */
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{ 2, 16, 840, 1, 101, 3, 4, 2, 1, },
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9,
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&sha256_init,
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&sha256_process,
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&sha256_done,
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&sha256_test,
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NULL
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};
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#ifdef LTC_SMALL_CODE
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/* the K array */
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static const ulong32 K[64] = {
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0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
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0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
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0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
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0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
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0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
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0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
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0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
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0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
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0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
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0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
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0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
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0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
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0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
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};
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#endif
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/* Various logical functions */
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#define Ch(x,y,z) (z ^ (x & (y ^ z)))
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#define Maj(x,y,z) (((x | y) & z) | (x & y))
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#define S(x, n) RORc((x),(n))
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#define R(x, n) (((x)&0xFFFFFFFFUL)>>(n))
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#define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
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#define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
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#define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
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#define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
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/* compress 512-bits */
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#ifdef LTC_CLEAN_STACK
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static int _sha256_compress(hash_state * md, unsigned char *buf)
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#else
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static int sha256_compress(hash_state * md, unsigned char *buf)
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#endif
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{
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ulong32 S[8], W[64], t0, t1;
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#ifdef LTC_SMALL_CODE
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ulong32 t;
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#endif
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int i;
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/* copy state into S */
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for (i = 0; i < 8; i++) {
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S[i] = md->sha256.state[i];
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}
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/* copy the state into 512-bits into W[0..15] */
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for (i = 0; i < 16; i++) {
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LOAD32H(W[i], buf + (4*i));
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}
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/* fill W[16..63] */
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for (i = 16; i < 64; i++) {
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W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
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}
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/* Compress */
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#ifdef LTC_SMALL_CODE
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#define RND(a,b,c,d,e,f,g,h,i) \
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t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
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t1 = Sigma0(a) + Maj(a, b, c); \
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d += t0; \
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h = t0 + t1;
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for (i = 0; i < 64; ++i) {
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i);
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t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4];
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S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t;
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}
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#else
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#define RND(a,b,c,d,e,f,g,h,i,ki) \
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t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
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t1 = Sigma0(a) + Maj(a, b, c); \
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d += t0; \
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h = t0 + t1;
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x71374491);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcf);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba5);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25b);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b01);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a7);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c1);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc6);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dc);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c8);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf3);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x14292967);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a85);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b2138);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d13);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a7354);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c85);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a1);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664b);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a3);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd6990624);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e3585);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa070);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c08);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774c);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4a);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3);
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RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee);
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RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f);
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RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814);
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RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc70208);
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RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa);
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RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506ceb);
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RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7);
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RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2);
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#undef RND
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#endif
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/* feedback */
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for (i = 0; i < 8; i++) {
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md->sha256.state[i] = md->sha256.state[i] + S[i];
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}
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return CRYPT_OK;
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}
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#ifdef LTC_CLEAN_STACK
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static int sha256_compress(hash_state * md, unsigned char *buf)
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{
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int err;
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err = _sha256_compress(md, buf);
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burn_stack(sizeof(ulong32) * 74);
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return err;
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}
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#endif
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/**
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Initialize the hash state
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@param md The hash state you wish to initialize
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@return CRYPT_OK if successful
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*/
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int sha256_init(hash_state * md)
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{
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LTC_ARGCHK(md != NULL);
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md->sha256.curlen = 0;
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md->sha256.length = 0;
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md->sha256.state[0] = 0x6A09E667UL;
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md->sha256.state[1] = 0xBB67AE85UL;
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md->sha256.state[2] = 0x3C6EF372UL;
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md->sha256.state[3] = 0xA54FF53AUL;
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md->sha256.state[4] = 0x510E527FUL;
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md->sha256.state[5] = 0x9B05688CUL;
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md->sha256.state[6] = 0x1F83D9ABUL;
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md->sha256.state[7] = 0x5BE0CD19UL;
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return CRYPT_OK;
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}
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/**
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Process a block of memory though the hash
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@param md The hash state
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@param in The data to hash
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@param inlen The length of the data (octets)
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@return CRYPT_OK if successful
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*/
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HASH_PROCESS(sha256_process, sha256_compress, sha256, 64)
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/**
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Terminate the hash to get the digest
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@param md The hash state
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@param out [out] The destination of the hash (32 bytes)
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@return CRYPT_OK if successful
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*/
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int sha256_done(hash_state * md, unsigned char *out)
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{
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int i;
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LTC_ARGCHK(md != NULL);
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LTC_ARGCHK(out != NULL);
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if (md->sha256.curlen >= sizeof(md->sha256.buf)) {
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return CRYPT_INVALID_ARG;
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}
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/* increase the length of the message */
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md->sha256.length += md->sha256.curlen * 8;
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/* append the '1' bit */
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md->sha256.buf[md->sha256.curlen++] = (unsigned char)0x80;
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/* if the length is currently above 56 bytes we append zeros
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* then compress. Then we can fall back to padding zeros and length
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* encoding like normal.
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*/
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if (md->sha256.curlen > 56) {
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while (md->sha256.curlen < 64) {
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md->sha256.buf[md->sha256.curlen++] = (unsigned char)0;
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}
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sha256_compress(md, md->sha256.buf);
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md->sha256.curlen = 0;
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}
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/* pad upto 56 bytes of zeroes */
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while (md->sha256.curlen < 56) {
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md->sha256.buf[md->sha256.curlen++] = (unsigned char)0;
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}
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/* store length */
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STORE64H(md->sha256.length, md->sha256.buf+56);
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sha256_compress(md, md->sha256.buf);
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/* copy output */
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for (i = 0; i < 8; i++) {
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STORE32H(md->sha256.state[i], out+(4*i));
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}
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#ifdef LTC_CLEAN_STACK
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zeromem(md, sizeof(hash_state));
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#endif
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return CRYPT_OK;
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}
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void calc_sha256(char hashstr[(256 >> 3) * 2 + 1],uint8_t hash[256 >> 3],uint8_t *src,int32_t len)
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{
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hash_state md;
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sha256_init(&md);
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sha256_process(&md,src,len);
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sha256_done(&md,hash);
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if ( hashstr != 0 )
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{
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int32_t init_hexbytes_noT(char *hexbytes,uint8_t *message,long len);
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init_hexbytes_noT(hashstr,hash,256 >> 3);
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}
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}
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void calc_sha256cat(uint8_t hash[256 >> 3],uint8_t *src,int32_t len,uint8_t *src2,int32_t len2)
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{
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hash_state md;
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sha256_init(&md);
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sha256_process(&md,src,len);
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if ( src2 != 0 )
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sha256_process(&md,src2,len2);
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sha256_done(&md,hash);
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}
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void update_sha256(uint8_t hash[256 >> 3],struct sha256_state *state,uint8_t *src,int32_t len)
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{
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hash_state md;
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memset(&md,0,sizeof(md));
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if ( src == 0 )
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sha256_init(&md);
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else
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{
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md.sha256 = *state;
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sha256_process(&md,src,len);
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}
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*state = md.sha256;
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sha256_done(&md,hash);
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}
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/*void calc_OP_HASH160(char hexstr[41],uint8_t hash160[20],char *pubkey)
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{
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int32_t decode_hex(unsigned char *bytes,int32_t n,char *hex);
|
|
int32_t init_hexbytes_noT(char *hexbytes,uint8_t *message,long len);
|
|
uint8_t sha256[32],buf[4096]; int32_t len; hash_state md;
|
|
len = (int32_t)strlen(pubkey)/2;
|
|
if ( len > sizeof(buf) )
|
|
{
|
|
printf("calc_OP_HASH160 overflow len.%d vs %d\n",len,(int32_t)sizeof(buf));
|
|
return;
|
|
}
|
|
decode_hex(buf,len,pubkey);
|
|
sha256_init(&md);
|
|
sha256_process(&md,buf,len);
|
|
sha256_done(&md,sha256);
|
|
|
|
rmd160_init(&md);
|
|
rmd160_process(&md,sha256,256 >> 3);
|
|
rmd160_done(&md,hash160);
|
|
if ( 0 )
|
|
{
|
|
int i;
|
|
for (i=0; i<20; i++)
|
|
printf("%02x",hash160[i]);
|
|
printf("<- (%s)\n",pubkey);
|
|
}
|
|
if ( hexstr != 0 )
|
|
init_hexbytes_noT(hexstr,hash160,20);
|
|
}*/
|
|
|
|
/**
|
|
Self-test the hash
|
|
@return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
|
|
*/
|
|
|
|
int sha256_test(void)
|
|
{
|
|
#ifndef LTC_TEST
|
|
return CRYPT_NOP;
|
|
#else
|
|
static const struct {
|
|
char *msg;
|
|
unsigned char hash[32];
|
|
} tests[] = {
|
|
{ "abc",
|
|
{ 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
|
|
0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
|
|
0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
|
|
0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad }
|
|
},
|
|
{ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
|
|
{ 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
|
|
0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
|
|
0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
|
|
0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1 }
|
|
},
|
|
{ "helloworld", { 0x00 } },
|
|
};
|
|
void reverse_hexstr(char *str);
|
|
int32_t decode_hex(unsigned char *bytes,int32_t n,char *hex);
|
|
|
|
int i,j;
|
|
unsigned char tmp[32],buf[512];
|
|
hash_state md;
|
|
char *str;
|
|
|
|
for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
|
|
sha256_init(&md);
|
|
sha256_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
|
|
sha256_done(&md, tmp);
|
|
if (XMEMCMP(tmp, tests[i].hash, 32) != 0) {
|
|
for (j=0; j<32; j++)
|
|
printf("%02x",tmp[j]);
|
|
printf(" <- sha256(%s)\n",tests[i].msg);
|
|
str = malloc(strlen(tests[i].msg) + 16);
|
|
strcpy(str,(char*)tests[i].msg);
|
|
reverse_hexstr(str);
|
|
printf("reversed.(%s)\n",str);
|
|
sha256_init(&md);
|
|
sha256_process(&md, (unsigned char*)str, (unsigned long)strlen(str));
|
|
sha256_done(&md, tmp);
|
|
for (j=0; j<32; j++)
|
|
printf("%02x",tmp[j]);
|
|
printf(" <- sha256(%s)\n",str);
|
|
decode_hex(buf,(int)strlen(tests[i].msg),tests[i].msg);
|
|
sha256_init(&md);
|
|
sha256_process(&md, (unsigned char*)buf, (unsigned long)strlen(tests[i].msg)/2);
|
|
sha256_done(&md, tmp);
|
|
for (j=0; j<32; j++)
|
|
printf("%02x",tmp[j]);
|
|
printf(" <- sha256(binary %s)\n",tests[i].msg);
|
|
return CRYPT_FAIL_TESTVECTOR;
|
|
}
|
|
}
|
|
printf("tests completed\n");
|
|
return CRYPT_OK;
|
|
#endif
|
|
}
|
|
|
|
//#ifdef LTC_SHA224
|
|
//#include "sha224.c"
|
|
//#endif
|
|
|
|
//#endif
|
|
#undef S
|
|
#undef R
|
|
#undef Sigma0
|
|
#undef Sigma1
|
|
#undef Gamma0
|
|
#undef Gamma1
|
|
#undef Ch
|
|
#undef Maj
|
|
|
|
|
|
|
|
/* $Source: /cvs/libtom/libtomcrypt/src/hashes/sha2/sha256.c,v $ */
|
|
/* $Revision: 1.11 $ */
|
|
/* $Date: 2007/05/12 14:25:28 $ */
|
|
|