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sha2.cpp

sha2.cpp 32.55 KB

/*
 * FIPS 180-2 SHA-224/256/384/512 implementation
 * Last update: 02/02/2007
 * Issue date: 04/30/2005
 *
 * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if 0
#define UNROLL_LOOPS /* Enable loops unrolling */
#endif

#include <string.h>

#include "sha2.h"

#define SHFR(x, n) (x >> n)
#define ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n)))
#define ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n)))
#define CH(x, y, z) ((x & y) ^ (~x & z))
#define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z))

#define SHA256_F1(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
#define SHA256_F2(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
#define SHA256_F3(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHFR(x, 3))
#define SHA256_F4(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHFR(x, 10))

#define SHA512_F1(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
#define SHA512_F2(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
#define SHA512_F3(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHFR(x, 7))
#define SHA512_F4(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHFR(x, 6))

#define UNPACK32(x, str) \
{ \
 *((str) + 3) = (uint8) ((x) ); \
 *((str) + 2) = (uint8) ((x) >> 8); \
 *((str) + 1) = (uint8) ((x) >> 16); \
 *((str) + 0) = (uint8) ((x) >> 24); \
}

#define PACK32(str, x) \
{ \
 *(x) = ((uint32) *((str) + 3) ) \
 | ((uint32) *((str) + 2) << 8) \
 | ((uint32) *((str) + 1) << 16) \
 | ((uint32) *((str) + 0) << 24); \
}

#define UNPACK64(x, str) \
{ \
 *((str) + 7) = (uint8) ((x) ); \
 *((str) + 6) = (uint8) ((x) >> 8); \
 *((str) + 5) = (uint8) ((x) >> 16); \
 *((str) + 4) = (uint8) ((x) >> 24); \
 *((str) + 3) = (uint8) ((x) >> 32); \
 *((str) + 2) = (uint8) ((x) >> 40); \
 *((str) + 1) = (uint8) ((x) >> 48); \
 *((str) + 0) = (uint8) ((x) >> 56); \
}

#define PACK64(str, x) \
{ \
 *(x) = ((uint64) *((str) + 7) ) \
 | ((uint64) *((str) + 6) << 8) \
 | ((uint64) *((str) + 5) << 16) \
 | ((uint64) *((str) + 4) << 24) \
 | ((uint64) *((str) + 3) << 32) \
 | ((uint64) *((str) + 2) << 40) \
 | ((uint64) *((str) + 1) << 48) \
 | ((uint64) *((str) + 0) << 56); \
}

/* Macros used for loops unrolling */

#define SHA256_SCR(i) \
{ \
 w[i] = SHA256_F4(w[i - 2]) + w[i - 7] \
 + SHA256_F3(w[i - 15]) + w[i - 16]; \
}

#define SHA512_SCR(i) \
{ \
 w[i] = SHA512_F4(w[i - 2]) + w[i - 7] \
 + SHA512_F3(w[i - 15]) + w[i - 16]; \
}

#define SHA256_EXP(a, b, c, d, e, f, g, h, j) \
{ \
 t1 = wv[h] + SHA256_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \
 + sha256_k[j] + w[j]; \
 t2 = SHA256_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \
 wv[d] += t1; \
 wv[h] = t1 + t2; \
}

#define SHA512_EXP(a, b, c, d, e, f, g ,h, j) \
{ \
 t1 = wv[h] + SHA512_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \
 + sha512_k[j] + w[j]; \
 t2 = SHA512_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \
 wv[d] += t1; \
 wv[h] = t1 + t2; \
}

uint32 sha224_h0[8] =
{ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 };

uint32 sha256_h0[8] =
{ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };

uint64 sha384_h0[8] =
{ 0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL,
 0x9159015a3070dd17ULL, 0x152fecd8f70e5939ULL,
 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
 0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL };

uint64 sha512_h0[8] =
{ 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL };

uint32 sha256_k[64] =
{ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 };

uint64 sha512_k[80] =
{ 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL };

/* SHA-256 functions */

void sha256_transf(sha256_ctx* ctx, const unsigned char* message,
 unsigned int block_nb)
{
 uint32 w[64];
 uint32 wv[8];
 uint32 t1, t2;
 const unsigned char* sub_block;
 int i;

#ifndef UNROLL_LOOPS
 int j;
#endif

for (i = 0; i < (int)block_nb; i++) {
 sub_block = message + (i << 6);

#ifndef UNROLL_LOOPS
 for (j = 0; j < 16; j++) {
 PACK32(&sub_block[j << 2], &w[j]);
 }

for (j = 16; j < 64; j++) {
 SHA256_SCR(j);
 }

for (j = 0; j < 8; j++) {
 wv[j] = ctx->h[j];
 }

for (j = 0; j < 64; j++) {
 t1 = wv[7] + SHA256_F2(wv[4]) + CH(wv[4], wv[5], wv[6])
 + sha256_k[j] + w[j];
 t2 = SHA256_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]);
 wv[7] = wv[6];
 wv[6] = wv[5];
 wv[5] = wv[4];
 wv[4] = wv[3] + t1;
 wv[3] = wv[2];
 wv[2] = wv[1];
 wv[1] = wv[0];
 wv[0] = t1 + t2;
 }

for (j = 0; j < 8; j++) {
 ctx->h[j] += wv[j];
 }
#else
 PACK32(&sub_block[0], &w[0]); PACK32(&sub_block[4], &w[1]);
 PACK32(&sub_block[8], &w[2]); PACK32(&sub_block[12], &w[3]);
 PACK32(&sub_block[16], &w[4]); PACK32(&sub_block[20], &w[5]);
 PACK32(&sub_block[24], &w[6]); PACK32(&sub_block[28], &w[7]);
 PACK32(&sub_block[32], &w[8]); PACK32(&sub_block[36], &w[9]);
 PACK32(&sub_block[40], &w[10]); PACK32(&sub_block[44], &w[11]);
 PACK32(&sub_block[48], &w[12]); PACK32(&sub_block[52], &w[13]);
 PACK32(&sub_block[56], &w[14]); PACK32(&sub_block[60], &w[15]);

SHA256_SCR(16); SHA256_SCR(17); SHA256_SCR(18); SHA256_SCR(19);
 SHA256_SCR(20); SHA256_SCR(21); SHA256_SCR(22); SHA256_SCR(23);
 SHA256_SCR(24); SHA256_SCR(25); SHA256_SCR(26); SHA256_SCR(27);
 SHA256_SCR(28); SHA256_SCR(29); SHA256_SCR(30); SHA256_SCR(31);
 SHA256_SCR(32); SHA256_SCR(33); SHA256_SCR(34); SHA256_SCR(35);
 SHA256_SCR(36); SHA256_SCR(37); SHA256_SCR(38); SHA256_SCR(39);
 SHA256_SCR(40); SHA256_SCR(41); SHA256_SCR(42); SHA256_SCR(43);
 SHA256_SCR(44); SHA256_SCR(45); SHA256_SCR(46); SHA256_SCR(47);
 SHA256_SCR(48); SHA256_SCR(49); SHA256_SCR(50); SHA256_SCR(51);
 SHA256_SCR(52); SHA256_SCR(53); SHA256_SCR(54); SHA256_SCR(55);
 SHA256_SCR(56); SHA256_SCR(57); SHA256_SCR(58); SHA256_SCR(59);
 SHA256_SCR(60); SHA256_SCR(61); SHA256_SCR(62); SHA256_SCR(63);

wv[0] = ctx->h[0]; wv[1] = ctx->h[1];
 wv[2] = ctx->h[2]; wv[3] = ctx->h[3];
 wv[4] = ctx->h[4]; wv[5] = ctx->h[5];
 wv[6] = ctx->h[6]; wv[7] = ctx->h[7];

SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 0); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 1);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 2); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 3);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 4); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 5);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 6); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 7);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 8); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 9);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 10); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 11);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 12); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 13);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 14); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 15);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 16); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 17);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 18); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 19);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 20); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 21);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 22); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 23);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 24); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 25);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 26); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 27);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 28); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 29);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 30); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 31);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 32); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 33);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 34); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 35);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 36); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 37);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 38); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 39);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 40); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 41);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 42); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 43);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 44); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 45);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 46); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 47);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 48); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 49);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 50); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 51);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 52); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 53);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 54); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 55);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 56); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 57);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 58); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 59);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 60); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 61);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 62); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 63);

ctx->h[0] += wv[0]; ctx->h[1] += wv[1];
 ctx->h[2] += wv[2]; ctx->h[3] += wv[3];
 ctx->h[4] += wv[4]; ctx->h[5] += wv[5];
 ctx->h[6] += wv[6]; ctx->h[7] += wv[7];
#endif /* !UNROLL_LOOPS */
 }
}

void sha256(const unsigned char* message, unsigned int len, unsigned char* digest)
{
 sha256_ctx ctx;

sha256_init(&ctx);
 sha256_update(&ctx, message, len);
 sha256_final(&ctx, digest);
}

void sha256_init(sha256_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha256_h0[i];
 }
#else
 ctx->h[0] = sha256_h0[0]; ctx->h[1] = sha256_h0[1];
 ctx->h[2] = sha256_h0[2]; ctx->h[3] = sha256_h0[3];
 ctx->h[4] = sha256_h0[4]; ctx->h[5] = sha256_h0[5];
 ctx->h[6] = sha256_h0[6]; ctx->h[7] = sha256_h0[7];
#endif /* !UNROLL_LOOPS */

ctx->len = 0;
 ctx->tot_len = 0;
}

void sha256_update(sha256_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

tmp_len = SHA256_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

memcpy(&ctx->block[ctx->len], message, rem_len);

if (ctx->len + len < SHA256_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

new_len = len - rem_len;
 block_nb = new_len / SHA256_BLOCK_SIZE;

shifted_message = message + rem_len;

sha256_transf(ctx, ctx->block, 1);
 sha256_transf(ctx, shifted_message, block_nb);

rem_len = new_len % SHA256_BLOCK_SIZE;

memcpy(ctx->block, &shifted_message[block_nb << 6],
 rem_len);

ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 6;
}

void sha256_final(sha256_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

block_nb = (1 + ((SHA256_BLOCK_SIZE - 9)
 < (ctx->len % SHA256_BLOCK_SIZE)));

len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 6;

memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

sha256_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 8; i++) {
 UNPACK32(ctx->h[i], &digest[i << 2]);
 }
#else
 UNPACK32(ctx->h[0], &digest[0]);
 UNPACK32(ctx->h[1], &digest[4]);
 UNPACK32(ctx->h[2], &digest[8]);
 UNPACK32(ctx->h[3], &digest[12]);
 UNPACK32(ctx->h[4], &digest[16]);
 UNPACK32(ctx->h[5], &digest[20]);
 UNPACK32(ctx->h[6], &digest[24]);
 UNPACK32(ctx->h[7], &digest[28]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-512 functions */

void sha512_transf(sha512_ctx* ctx, const unsigned char* message,
 unsigned int block_nb)
{
 uint64 w[80];
 uint64 wv[8];
 uint64 t1, t2;
 const unsigned char* sub_block;
 int i, j;

for (i = 0; i < (int)block_nb; i++) {
 sub_block = message + (i << 7);

#ifndef UNROLL_LOOPS
 for (j = 0; j < 16; j++) {
 PACK64(&sub_block[j << 3], &w[j]);
 }

for (j = 16; j < 80; j++) {
 SHA512_SCR(j);
 }

for (j = 0; j < 8; j++) {
 wv[j] = ctx->h[j];
 }

for (j = 0; j < 80; j++) {
 t1 = wv[7] + SHA512_F2(wv[4]) + CH(wv[4], wv[5], wv[6])
 + sha512_k[j] + w[j];
 t2 = SHA512_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]);
 wv[7] = wv[6];
 wv[6] = wv[5];
 wv[5] = wv[4];
 wv[4] = wv[3] + t1;
 wv[3] = wv[2];
 wv[2] = wv[1];
 wv[1] = wv[0];
 wv[0] = t1 + t2;
 }

for (j = 0; j < 8; j++) {
 ctx->h[j] += wv[j];
 }
#else
 PACK64(&sub_block[0], &w[0]); PACK64(&sub_block[8], &w[1]);
 PACK64(&sub_block[16], &w[2]); PACK64(&sub_block[24], &w[3]);
 PACK64(&sub_block[32], &w[4]); PACK64(&sub_block[40], &w[5]);
 PACK64(&sub_block[48], &w[6]); PACK64(&sub_block[56], &w[7]);
 PACK64(&sub_block[64], &w[8]); PACK64(&sub_block[72], &w[9]);
 PACK64(&sub_block[80], &w[10]); PACK64(&sub_block[88], &w[11]);
 PACK64(&sub_block[96], &w[12]); PACK64(&sub_block[104], &w[13]);
 PACK64(&sub_block[112], &w[14]); PACK64(&sub_block[120], &w[15]);

SHA512_SCR(16); SHA512_SCR(17); SHA512_SCR(18); SHA512_SCR(19);
 SHA512_SCR(20); SHA512_SCR(21); SHA512_SCR(22); SHA512_SCR(23);
 SHA512_SCR(24); SHA512_SCR(25); SHA512_SCR(26); SHA512_SCR(27);
 SHA512_SCR(28); SHA512_SCR(29); SHA512_SCR(30); SHA512_SCR(31);
 SHA512_SCR(32); SHA512_SCR(33); SHA512_SCR(34); SHA512_SCR(35);
 SHA512_SCR(36); SHA512_SCR(37); SHA512_SCR(38); SHA512_SCR(39);
 SHA512_SCR(40); SHA512_SCR(41); SHA512_SCR(42); SHA512_SCR(43);
 SHA512_SCR(44); SHA512_SCR(45); SHA512_SCR(46); SHA512_SCR(47);
 SHA512_SCR(48); SHA512_SCR(49); SHA512_SCR(50); SHA512_SCR(51);
 SHA512_SCR(52); SHA512_SCR(53); SHA512_SCR(54); SHA512_SCR(55);
 SHA512_SCR(56); SHA512_SCR(57); SHA512_SCR(58); SHA512_SCR(59);
 SHA512_SCR(60); SHA512_SCR(61); SHA512_SCR(62); SHA512_SCR(63);
 SHA512_SCR(64); SHA512_SCR(65); SHA512_SCR(66); SHA512_SCR(67);
 SHA512_SCR(68); SHA512_SCR(69); SHA512_SCR(70); SHA512_SCR(71);
 SHA512_SCR(72); SHA512_SCR(73); SHA512_SCR(74); SHA512_SCR(75);
 SHA512_SCR(76); SHA512_SCR(77); SHA512_SCR(78); SHA512_SCR(79);

wv[0] = ctx->h[0]; wv[1] = ctx->h[1];
 wv[2] = ctx->h[2]; wv[3] = ctx->h[3];
 wv[4] = ctx->h[4]; wv[5] = ctx->h[5];
 wv[6] = ctx->h[6]; wv[7] = ctx->h[7];

j = 0;

do {
 SHA512_EXP(0, 1, 2, 3, 4, 5, 6, 7, j); j++;
 SHA512_EXP(7, 0, 1, 2, 3, 4, 5, 6, j); j++;
 SHA512_EXP(6, 7, 0, 1, 2, 3, 4, 5, j); j++;
 SHA512_EXP(5, 6, 7, 0, 1, 2, 3, 4, j); j++;
 SHA512_EXP(4, 5, 6, 7, 0, 1, 2, 3, j); j++;
 SHA512_EXP(3, 4, 5, 6, 7, 0, 1, 2, j); j++;
 SHA512_EXP(2, 3, 4, 5, 6, 7, 0, 1, j); j++;
 SHA512_EXP(1, 2, 3, 4, 5, 6, 7, 0, j); j++;
 } while (j < 80);

ctx->h[0] += wv[0]; ctx->h[1] += wv[1];
 ctx->h[2] += wv[2]; ctx->h[3] += wv[3];
 ctx->h[4] += wv[4]; ctx->h[5] += wv[5];
 ctx->h[6] += wv[6]; ctx->h[7] += wv[7];
#endif /* !UNROLL_LOOPS */
 }
}

void sha512(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha512_ctx ctx;

sha512_init(&ctx);
 sha512_update(&ctx, message, len);
 sha512_final(&ctx, digest);
}

void sha512_init(sha512_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha512_h0[i];
 }
#else
 ctx->h[0] = sha512_h0[0]; ctx->h[1] = sha512_h0[1];
 ctx->h[2] = sha512_h0[2]; ctx->h[3] = sha512_h0[3];
 ctx->h[4] = sha512_h0[4]; ctx->h[5] = sha512_h0[5];
 ctx->h[6] = sha512_h0[6]; ctx->h[7] = sha512_h0[7];
#endif /* !UNROLL_LOOPS */

ctx->len = 0;
 ctx->tot_len = 0;
}

void sha512_update(sha512_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

tmp_len = SHA512_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

memcpy(&ctx->block[ctx->len], message, rem_len);

if (ctx->len + len < SHA512_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

new_len = len - rem_len;
 block_nb = new_len / SHA512_BLOCK_SIZE;

shifted_message = message + rem_len;

sha512_transf(ctx, ctx->block, 1);
 sha512_transf(ctx, shifted_message, block_nb);

rem_len = new_len % SHA512_BLOCK_SIZE;

memcpy(ctx->block, &shifted_message[block_nb << 7],
 rem_len);

ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 7;
}

void sha512_final(sha512_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

block_nb = 1 + ((SHA512_BLOCK_SIZE - 17)
 < (ctx->len % SHA512_BLOCK_SIZE));

len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 7;

memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

sha512_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 8; i++) {
 UNPACK64(ctx->h[i], &digest[i << 3]);
 }
#else
 UNPACK64(ctx->h[0], &digest[0]);
 UNPACK64(ctx->h[1], &digest[8]);
 UNPACK64(ctx->h[2], &digest[16]);
 UNPACK64(ctx->h[3], &digest[24]);
 UNPACK64(ctx->h[4], &digest[32]);
 UNPACK64(ctx->h[5], &digest[40]);
 UNPACK64(ctx->h[6], &digest[48]);
 UNPACK64(ctx->h[7], &digest[56]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-384 functions */

void sha384(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha384_ctx ctx;

sha384_init(&ctx);
 sha384_update(&ctx, message, len);
 sha384_final(&ctx, digest);
}

void sha384_init(sha384_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha384_h0[i];
 }
#else
 ctx->h[0] = sha384_h0[0]; ctx->h[1] = sha384_h0[1];
 ctx->h[2] = sha384_h0[2]; ctx->h[3] = sha384_h0[3];
 ctx->h[4] = sha384_h0[4]; ctx->h[5] = sha384_h0[5];
 ctx->h[6] = sha384_h0[6]; ctx->h[7] = sha384_h0[7];
#endif /* !UNROLL_LOOPS */

ctx->len = 0;
 ctx->tot_len = 0;
}

void sha384_update(sha384_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

tmp_len = SHA384_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

memcpy(&ctx->block[ctx->len], message, rem_len);

if (ctx->len + len < SHA384_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

new_len = len - rem_len;
 block_nb = new_len / SHA384_BLOCK_SIZE;

shifted_message = message + rem_len;

sha512_transf(ctx, ctx->block, 1);
 sha512_transf(ctx, shifted_message, block_nb);

rem_len = new_len % SHA384_BLOCK_SIZE;

memcpy(ctx->block, &shifted_message[block_nb << 7],
 rem_len);

ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 7;
}

void sha384_final(sha384_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

block_nb = (1 + ((SHA384_BLOCK_SIZE - 17)
 < (ctx->len % SHA384_BLOCK_SIZE)));

len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 7;

memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

sha512_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 6; i++) {
 UNPACK64(ctx->h[i], &digest[i << 3]);
 }
#else
 UNPACK64(ctx->h[0], &digest[0]);
 UNPACK64(ctx->h[1], &digest[8]);
 UNPACK64(ctx->h[2], &digest[16]);
 UNPACK64(ctx->h[3], &digest[24]);
 UNPACK64(ctx->h[4], &digest[32]);
 UNPACK64(ctx->h[5], &digest[40]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-224 functions */

void sha224(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha224_ctx ctx;

sha224_init(&ctx);
 sha224_update(&ctx, message, len);
 sha224_final(&ctx, digest);
}

void sha224_init(sha224_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha224_h0[i];
 }
#else
 ctx->h[0] = sha224_h0[0]; ctx->h[1] = sha224_h0[1];
 ctx->h[2] = sha224_h0[2]; ctx->h[3] = sha224_h0[3];
 ctx->h[4] = sha224_h0[4]; ctx->h[5] = sha224_h0[5];
 ctx->h[6] = sha224_h0[6]; ctx->h[7] = sha224_h0[7];
#endif /* !UNROLL_LOOPS */

ctx->len = 0;
 ctx->tot_len = 0;
}

void sha224_update(sha224_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

tmp_len = SHA224_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

memcpy(&ctx->block[ctx->len], message, rem_len);

if (ctx->len + len < SHA224_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

new_len = len - rem_len;
 block_nb = new_len / SHA224_BLOCK_SIZE;

shifted_message = message + rem_len;

sha256_transf(ctx, ctx->block, 1);
 sha256_transf(ctx, shifted_message, block_nb);

rem_len = new_len % SHA224_BLOCK_SIZE;

memcpy(ctx->block, &shifted_message[block_nb << 6],
 rem_len);

ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 6;
}

void sha224_final(sha224_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

block_nb = (1 + ((SHA224_BLOCK_SIZE - 9)
 < (ctx->len % SHA224_BLOCK_SIZE)));

len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 6;

memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

sha256_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 7; i++) {
 UNPACK32(ctx->h[i], &digest[i << 2]);
 }
#else
 UNPACK32(ctx->h[0], &digest[0]);
 UNPACK32(ctx->h[1], &digest[4]);
 UNPACK32(ctx->h[2], &digest[8]);
 UNPACK32(ctx->h[3], &digest[12]);
 UNPACK32(ctx->h[4], &digest[16]);
 UNPACK32(ctx->h[5], &digest[20]);
 UNPACK32(ctx->h[6], &digest[24]);
#endif /* !UNROLL_LOOPS */
}

#ifdef TEST_VECTORS

/* FIPS 180-2 Validation tests */

#include <stdio.h>
#include <stdlib.h>

void test(const char* vector, unsigned char* digest,
 unsigned int digest_size)
{
 char output[2 * SHA512_DIGEST_SIZE + 1];
 int i;

output[2 * digest_size] = '0円';

for (i = 0; i < (int)digest_size; i++) {
 sprintf(output + 2 * i, "%02x", digest[i]);
 }

printf("H: %s\n", output);
 if (strcmp(vector, output)) {
 fprintf(stderr, "Test failed.\n");
 exit(EXIT_FAILURE);
 }
}

int main(void)
{
 static const char* vectors[4][3] =
 { /* SHA-224 */
 {
 "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7",
 "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525",
 "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67",
 },
 /* SHA-256 */
 {
 "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
 "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1",
 "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0",
 },
 /* SHA-384 */
 {
 "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"
 "8086072ba1e7cc2358baeca134c825a7",
 "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"
 "fcc7c71a557e2db966c3e9fa91746039",
 "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"
 "07b8b3dc38ecc4ebae97ddd87f3d8985",
 },
 /* SHA-512 */
 {
 "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"
 "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
 "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"
 "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909",
 "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"
 "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b"
 }
 };

static const char message1[] = "abc";
 static const char message2a[] = "abcdbcdecdefdefgefghfghighijhi"
 "jkijkljklmklmnlmnomnopnopq";
 static const char message2b[] = "abcdefghbcdefghicdefghijdefghijkefghij"
 "klfghijklmghijklmnhijklmnoijklmnopjklm"
 "nopqklmnopqrlmnopqrsmnopqrstnopqrstu";
 unsigned char* message3;
 unsigned int message3_len = 1000000;
 unsigned char digest[SHA512_DIGEST_SIZE];

message3 = malloc(message3_len);
 if (message3 == NULL) {
 fprintf(stderr, "Can't allocate memory\n");
 return -1;
 }
 memset(message3, 'a', message3_len);

printf("SHA-2 FIPS 180-2 Validation tests\n\n");
 printf("SHA-224 Test vectors\n");

sha224((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[0][0], digest, SHA224_DIGEST_SIZE);
 sha224((const unsigned char*)message2a, strlen(message2a), digest);
 test(vectors[0][1], digest, SHA224_DIGEST_SIZE);
 sha224(message3, message3_len, digest);
 test(vectors[0][2], digest, SHA224_DIGEST_SIZE);
 printf("\n");

printf("SHA-256 Test vectors\n");

sha256((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[1][0], digest, SHA256_DIGEST_SIZE);
 sha256((const unsigned char*)message2a, strlen(message2a), digest);
 test(vectors[1][1], digest, SHA256_DIGEST_SIZE);
 sha256(message3, message3_len, digest);
 test(vectors[1][2], digest, SHA256_DIGEST_SIZE);
 printf("\n");

printf("SHA-384 Test vectors\n");

sha384((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[2][0], digest, SHA384_DIGEST_SIZE);
 sha384((const unsigned char*)message2b, strlen(message2b), digest);
 test(vectors[2][1], digest, SHA384_DIGEST_SIZE);
 sha384(message3, message3_len, digest);
 test(vectors[2][2], digest, SHA384_DIGEST_SIZE);
 printf("\n");

printf("SHA-512 Test vectors\n");

sha512((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[3][0], digest, SHA512_DIGEST_SIZE);
 sha512((const unsigned char*)message2b, strlen(message2b), digest);
 test(vectors[3][1], digest, SHA512_DIGEST_SIZE);
 sha512(message3, message3_len, digest);
 test(vectors[3][2], digest, SHA512_DIGEST_SIZE);
 printf("\n");

printf("All tests passed.\n");

return 0;
}

#endif /* TEST_VECTORS */

Copy Edit Raw Blame History

johnsonyl authored 2021年01月09日 10:35 +08:00 . 2020年01月09日更新

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/*
 * FIPS 180-2 SHA-224/256/384/512 implementation
 * Last update: 02/02/2007
 * Issue date: 04/30/2005
 *
 * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if 0
#define UNROLL_LOOPS /* Enable loops unrolling */
#endif

#include <string.h>

#include "sha2.h"

#define SHFR(x, n) (x >> n)
#define ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n)))
#define ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n)))
#define CH(x, y, z) ((x & y) ^ (~x & z))
#define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z))

#define SHA256_F1(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
#define SHA256_F2(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
#define SHA256_F3(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHFR(x, 3))
#define SHA256_F4(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHFR(x, 10))

#define SHA512_F1(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
#define SHA512_F2(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
#define SHA512_F3(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHFR(x, 7))
#define SHA512_F4(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHFR(x, 6))

#define UNPACK32(x, str) \
{ \
 *((str) + 3) = (uint8) ((x) ); \
 *((str) + 2) = (uint8) ((x) >> 8); \
 *((str) + 1) = (uint8) ((x) >> 16); \
 *((str) + 0) = (uint8) ((x) >> 24); \
}

#define PACK32(str, x) \
{ \
 *(x) = ((uint32) *((str) + 3) ) \
 | ((uint32) *((str) + 2) << 8) \
 | ((uint32) *((str) + 1) << 16) \
 | ((uint32) *((str) + 0) << 24); \
}

#define UNPACK64(x, str) \
{ \
 *((str) + 7) = (uint8) ((x) ); \
 *((str) + 6) = (uint8) ((x) >> 8); \
 *((str) + 5) = (uint8) ((x) >> 16); \
 *((str) + 4) = (uint8) ((x) >> 24); \
 *((str) + 3) = (uint8) ((x) >> 32); \
 *((str) + 2) = (uint8) ((x) >> 40); \
 *((str) + 1) = (uint8) ((x) >> 48); \
 *((str) + 0) = (uint8) ((x) >> 56); \
}

#define PACK64(str, x) \
{ \
 *(x) = ((uint64) *((str) + 7) ) \
 | ((uint64) *((str) + 6) << 8) \
 | ((uint64) *((str) + 5) << 16) \
 | ((uint64) *((str) + 4) << 24) \
 | ((uint64) *((str) + 3) << 32) \
 | ((uint64) *((str) + 2) << 40) \
 | ((uint64) *((str) + 1) << 48) \
 | ((uint64) *((str) + 0) << 56); \
}

 /* Macros used for loops unrolling */

#define SHA256_SCR(i) \
{ \
 w[i] = SHA256_F4(w[i - 2]) + w[i - 7] \
 + SHA256_F3(w[i - 15]) + w[i - 16]; \
}

#define SHA512_SCR(i) \
{ \
 w[i] = SHA512_F4(w[i - 2]) + w[i - 7] \
 + SHA512_F3(w[i - 15]) + w[i - 16]; \
}

#define SHA256_EXP(a, b, c, d, e, f, g, h, j) \
{ \
 t1 = wv[h] + SHA256_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \
 + sha256_k[j] + w[j]; \
 t2 = SHA256_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \
 wv[d] += t1; \
 wv[h] = t1 + t2; \
}

#define SHA512_EXP(a, b, c, d, e, f, g ,h, j) \
{ \
 t1 = wv[h] + SHA512_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \
 + sha512_k[j] + w[j]; \
 t2 = SHA512_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \
 wv[d] += t1; \
 wv[h] = t1 + t2; \
}

uint32 sha224_h0[8] =
{ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 };

uint32 sha256_h0[8] =
{ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };

uint64 sha384_h0[8] =
{ 0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL,
 0x9159015a3070dd17ULL, 0x152fecd8f70e5939ULL,
 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
 0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL };

uint64 sha512_h0[8] =
{ 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL };

uint32 sha256_k[64] =
{ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 };

uint64 sha512_k[80] =
{ 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL };

/* SHA-256 functions */

void sha256_transf(sha256_ctx* ctx, const unsigned char* message,
 unsigned int block_nb)
{
 uint32 w[64];
 uint32 wv[8];
 uint32 t1, t2;
 const unsigned char* sub_block;
 int i;

#ifndef UNROLL_LOOPS
 int j;
#endif

 for (i = 0; i < (int)block_nb; i++) {
 sub_block = message + (i << 6);

#ifndef UNROLL_LOOPS
 for (j = 0; j < 16; j++) {
 PACK32(&sub_block[j << 2], &w[j]);
 }

 for (j = 16; j < 64; j++) {
 SHA256_SCR(j);
 }

 for (j = 0; j < 8; j++) {
 wv[j] = ctx->h[j];
 }

 for (j = 0; j < 64; j++) {
 t1 = wv[7] + SHA256_F2(wv[4]) + CH(wv[4], wv[5], wv[6])
 + sha256_k[j] + w[j];
 t2 = SHA256_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]);
 wv[7] = wv[6];
 wv[6] = wv[5];
 wv[5] = wv[4];
 wv[4] = wv[3] + t1;
 wv[3] = wv[2];
 wv[2] = wv[1];
 wv[1] = wv[0];
 wv[0] = t1 + t2;
 }

 for (j = 0; j < 8; j++) {
 ctx->h[j] += wv[j];
 }
#else
 PACK32(&sub_block[0], &w[0]); PACK32(&sub_block[4], &w[1]);
 PACK32(&sub_block[8], &w[2]); PACK32(&sub_block[12], &w[3]);
 PACK32(&sub_block[16], &w[4]); PACK32(&sub_block[20], &w[5]);
 PACK32(&sub_block[24], &w[6]); PACK32(&sub_block[28], &w[7]);
 PACK32(&sub_block[32], &w[8]); PACK32(&sub_block[36], &w[9]);
 PACK32(&sub_block[40], &w[10]); PACK32(&sub_block[44], &w[11]);
 PACK32(&sub_block[48], &w[12]); PACK32(&sub_block[52], &w[13]);
 PACK32(&sub_block[56], &w[14]); PACK32(&sub_block[60], &w[15]);

 SHA256_SCR(16); SHA256_SCR(17); SHA256_SCR(18); SHA256_SCR(19);
 SHA256_SCR(20); SHA256_SCR(21); SHA256_SCR(22); SHA256_SCR(23);
 SHA256_SCR(24); SHA256_SCR(25); SHA256_SCR(26); SHA256_SCR(27);
 SHA256_SCR(28); SHA256_SCR(29); SHA256_SCR(30); SHA256_SCR(31);
 SHA256_SCR(32); SHA256_SCR(33); SHA256_SCR(34); SHA256_SCR(35);
 SHA256_SCR(36); SHA256_SCR(37); SHA256_SCR(38); SHA256_SCR(39);
 SHA256_SCR(40); SHA256_SCR(41); SHA256_SCR(42); SHA256_SCR(43);
 SHA256_SCR(44); SHA256_SCR(45); SHA256_SCR(46); SHA256_SCR(47);
 SHA256_SCR(48); SHA256_SCR(49); SHA256_SCR(50); SHA256_SCR(51);
 SHA256_SCR(52); SHA256_SCR(53); SHA256_SCR(54); SHA256_SCR(55);
 SHA256_SCR(56); SHA256_SCR(57); SHA256_SCR(58); SHA256_SCR(59);
 SHA256_SCR(60); SHA256_SCR(61); SHA256_SCR(62); SHA256_SCR(63);

 wv[0] = ctx->h[0]; wv[1] = ctx->h[1];
 wv[2] = ctx->h[2]; wv[3] = ctx->h[3];
 wv[4] = ctx->h[4]; wv[5] = ctx->h[5];
 wv[6] = ctx->h[6]; wv[7] = ctx->h[7];

 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 0); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 1);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 2); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 3);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 4); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 5);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 6); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 7);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 8); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 9);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 10); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 11);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 12); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 13);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 14); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 15);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 16); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 17);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 18); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 19);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 20); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 21);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 22); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 23);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 24); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 25);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 26); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 27);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 28); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 29);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 30); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 31);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 32); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 33);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 34); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 35);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 36); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 37);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 38); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 39);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 40); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 41);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 42); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 43);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 44); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 45);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 46); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 47);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 48); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 49);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 50); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 51);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 52); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 53);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 54); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 55);
 SHA256_EXP(0, 1, 2, 3, 4, 5, 6, 7, 56); SHA256_EXP(7, 0, 1, 2, 3, 4, 5, 6, 57);
 SHA256_EXP(6, 7, 0, 1, 2, 3, 4, 5, 58); SHA256_EXP(5, 6, 7, 0, 1, 2, 3, 4, 59);
 SHA256_EXP(4, 5, 6, 7, 0, 1, 2, 3, 60); SHA256_EXP(3, 4, 5, 6, 7, 0, 1, 2, 61);
 SHA256_EXP(2, 3, 4, 5, 6, 7, 0, 1, 62); SHA256_EXP(1, 2, 3, 4, 5, 6, 7, 0, 63);

 ctx->h[0] += wv[0]; ctx->h[1] += wv[1];
 ctx->h[2] += wv[2]; ctx->h[3] += wv[3];
 ctx->h[4] += wv[4]; ctx->h[5] += wv[5];
 ctx->h[6] += wv[6]; ctx->h[7] += wv[7];
#endif /* !UNROLL_LOOPS */
 }
}

void sha256(const unsigned char* message, unsigned int len, unsigned char* digest)
{
 sha256_ctx ctx;

 sha256_init(&ctx);
 sha256_update(&ctx, message, len);
 sha256_final(&ctx, digest);
}

void sha256_init(sha256_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha256_h0[i];
 }
#else
 ctx->h[0] = sha256_h0[0]; ctx->h[1] = sha256_h0[1];
 ctx->h[2] = sha256_h0[2]; ctx->h[3] = sha256_h0[3];
 ctx->h[4] = sha256_h0[4]; ctx->h[5] = sha256_h0[5];
 ctx->h[6] = sha256_h0[6]; ctx->h[7] = sha256_h0[7];
#endif /* !UNROLL_LOOPS */

 ctx->len = 0;
 ctx->tot_len = 0;
}

void sha256_update(sha256_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

 tmp_len = SHA256_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

 memcpy(&ctx->block[ctx->len], message, rem_len);

 if (ctx->len + len < SHA256_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

 new_len = len - rem_len;
 block_nb = new_len / SHA256_BLOCK_SIZE;

 shifted_message = message + rem_len;

 sha256_transf(ctx, ctx->block, 1);
 sha256_transf(ctx, shifted_message, block_nb);

 rem_len = new_len % SHA256_BLOCK_SIZE;

 memcpy(ctx->block, &shifted_message[block_nb << 6],
 rem_len);

 ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 6;
}

void sha256_final(sha256_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

 block_nb = (1 + ((SHA256_BLOCK_SIZE - 9)
 < (ctx->len % SHA256_BLOCK_SIZE)));

 len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 6;

 memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

 sha256_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 8; i++) {
 UNPACK32(ctx->h[i], &digest[i << 2]);
 }
#else
 UNPACK32(ctx->h[0], &digest[0]);
 UNPACK32(ctx->h[1], &digest[4]);
 UNPACK32(ctx->h[2], &digest[8]);
 UNPACK32(ctx->h[3], &digest[12]);
 UNPACK32(ctx->h[4], &digest[16]);
 UNPACK32(ctx->h[5], &digest[20]);
 UNPACK32(ctx->h[6], &digest[24]);
 UNPACK32(ctx->h[7], &digest[28]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-512 functions */

void sha512_transf(sha512_ctx* ctx, const unsigned char* message,
 unsigned int block_nb)
{
 uint64 w[80];
 uint64 wv[8];
 uint64 t1, t2;
 const unsigned char* sub_block;
 int i, j;

 for (i = 0; i < (int)block_nb; i++) {
 sub_block = message + (i << 7);

#ifndef UNROLL_LOOPS
 for (j = 0; j < 16; j++) {
 PACK64(&sub_block[j << 3], &w[j]);
 }

 for (j = 16; j < 80; j++) {
 SHA512_SCR(j);
 }

 for (j = 0; j < 8; j++) {
 wv[j] = ctx->h[j];
 }

 for (j = 0; j < 80; j++) {
 t1 = wv[7] + SHA512_F2(wv[4]) + CH(wv[4], wv[5], wv[6])
 + sha512_k[j] + w[j];
 t2 = SHA512_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]);
 wv[7] = wv[6];
 wv[6] = wv[5];
 wv[5] = wv[4];
 wv[4] = wv[3] + t1;
 wv[3] = wv[2];
 wv[2] = wv[1];
 wv[1] = wv[0];
 wv[0] = t1 + t2;
 }

 for (j = 0; j < 8; j++) {
 ctx->h[j] += wv[j];
 }
#else
 PACK64(&sub_block[0], &w[0]); PACK64(&sub_block[8], &w[1]);
 PACK64(&sub_block[16], &w[2]); PACK64(&sub_block[24], &w[3]);
 PACK64(&sub_block[32], &w[4]); PACK64(&sub_block[40], &w[5]);
 PACK64(&sub_block[48], &w[6]); PACK64(&sub_block[56], &w[7]);
 PACK64(&sub_block[64], &w[8]); PACK64(&sub_block[72], &w[9]);
 PACK64(&sub_block[80], &w[10]); PACK64(&sub_block[88], &w[11]);
 PACK64(&sub_block[96], &w[12]); PACK64(&sub_block[104], &w[13]);
 PACK64(&sub_block[112], &w[14]); PACK64(&sub_block[120], &w[15]);

 SHA512_SCR(16); SHA512_SCR(17); SHA512_SCR(18); SHA512_SCR(19);
 SHA512_SCR(20); SHA512_SCR(21); SHA512_SCR(22); SHA512_SCR(23);
 SHA512_SCR(24); SHA512_SCR(25); SHA512_SCR(26); SHA512_SCR(27);
 SHA512_SCR(28); SHA512_SCR(29); SHA512_SCR(30); SHA512_SCR(31);
 SHA512_SCR(32); SHA512_SCR(33); SHA512_SCR(34); SHA512_SCR(35);
 SHA512_SCR(36); SHA512_SCR(37); SHA512_SCR(38); SHA512_SCR(39);
 SHA512_SCR(40); SHA512_SCR(41); SHA512_SCR(42); SHA512_SCR(43);
 SHA512_SCR(44); SHA512_SCR(45); SHA512_SCR(46); SHA512_SCR(47);
 SHA512_SCR(48); SHA512_SCR(49); SHA512_SCR(50); SHA512_SCR(51);
 SHA512_SCR(52); SHA512_SCR(53); SHA512_SCR(54); SHA512_SCR(55);
 SHA512_SCR(56); SHA512_SCR(57); SHA512_SCR(58); SHA512_SCR(59);
 SHA512_SCR(60); SHA512_SCR(61); SHA512_SCR(62); SHA512_SCR(63);
 SHA512_SCR(64); SHA512_SCR(65); SHA512_SCR(66); SHA512_SCR(67);
 SHA512_SCR(68); SHA512_SCR(69); SHA512_SCR(70); SHA512_SCR(71);
 SHA512_SCR(72); SHA512_SCR(73); SHA512_SCR(74); SHA512_SCR(75);
 SHA512_SCR(76); SHA512_SCR(77); SHA512_SCR(78); SHA512_SCR(79);

 wv[0] = ctx->h[0]; wv[1] = ctx->h[1];
 wv[2] = ctx->h[2]; wv[3] = ctx->h[3];
 wv[4] = ctx->h[4]; wv[5] = ctx->h[5];
 wv[6] = ctx->h[6]; wv[7] = ctx->h[7];

 j = 0;

 do {
 SHA512_EXP(0, 1, 2, 3, 4, 5, 6, 7, j); j++;
 SHA512_EXP(7, 0, 1, 2, 3, 4, 5, 6, j); j++;
 SHA512_EXP(6, 7, 0, 1, 2, 3, 4, 5, j); j++;
 SHA512_EXP(5, 6, 7, 0, 1, 2, 3, 4, j); j++;
 SHA512_EXP(4, 5, 6, 7, 0, 1, 2, 3, j); j++;
 SHA512_EXP(3, 4, 5, 6, 7, 0, 1, 2, j); j++;
 SHA512_EXP(2, 3, 4, 5, 6, 7, 0, 1, j); j++;
 SHA512_EXP(1, 2, 3, 4, 5, 6, 7, 0, j); j++;
 } while (j < 80);

 ctx->h[0] += wv[0]; ctx->h[1] += wv[1];
 ctx->h[2] += wv[2]; ctx->h[3] += wv[3];
 ctx->h[4] += wv[4]; ctx->h[5] += wv[5];
 ctx->h[6] += wv[6]; ctx->h[7] += wv[7];
#endif /* !UNROLL_LOOPS */
 }
}

void sha512(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha512_ctx ctx;

 sha512_init(&ctx);
 sha512_update(&ctx, message, len);
 sha512_final(&ctx, digest);
}

void sha512_init(sha512_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha512_h0[i];
 }
#else
 ctx->h[0] = sha512_h0[0]; ctx->h[1] = sha512_h0[1];
 ctx->h[2] = sha512_h0[2]; ctx->h[3] = sha512_h0[3];
 ctx->h[4] = sha512_h0[4]; ctx->h[5] = sha512_h0[5];
 ctx->h[6] = sha512_h0[6]; ctx->h[7] = sha512_h0[7];
#endif /* !UNROLL_LOOPS */

 ctx->len = 0;
 ctx->tot_len = 0;
}

void sha512_update(sha512_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

 tmp_len = SHA512_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

 memcpy(&ctx->block[ctx->len], message, rem_len);

 if (ctx->len + len < SHA512_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

 new_len = len - rem_len;
 block_nb = new_len / SHA512_BLOCK_SIZE;

 shifted_message = message + rem_len;

 sha512_transf(ctx, ctx->block, 1);
 sha512_transf(ctx, shifted_message, block_nb);

 rem_len = new_len % SHA512_BLOCK_SIZE;

 memcpy(ctx->block, &shifted_message[block_nb << 7],
 rem_len);

 ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 7;
}

void sha512_final(sha512_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

 block_nb = 1 + ((SHA512_BLOCK_SIZE - 17)
 < (ctx->len % SHA512_BLOCK_SIZE));

 len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 7;

 memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

 sha512_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 8; i++) {
 UNPACK64(ctx->h[i], &digest[i << 3]);
 }
#else
 UNPACK64(ctx->h[0], &digest[0]);
 UNPACK64(ctx->h[1], &digest[8]);
 UNPACK64(ctx->h[2], &digest[16]);
 UNPACK64(ctx->h[3], &digest[24]);
 UNPACK64(ctx->h[4], &digest[32]);
 UNPACK64(ctx->h[5], &digest[40]);
 UNPACK64(ctx->h[6], &digest[48]);
 UNPACK64(ctx->h[7], &digest[56]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-384 functions */

void sha384(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha384_ctx ctx;

 sha384_init(&ctx);
 sha384_update(&ctx, message, len);
 sha384_final(&ctx, digest);
}

void sha384_init(sha384_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha384_h0[i];
 }
#else
 ctx->h[0] = sha384_h0[0]; ctx->h[1] = sha384_h0[1];
 ctx->h[2] = sha384_h0[2]; ctx->h[3] = sha384_h0[3];
 ctx->h[4] = sha384_h0[4]; ctx->h[5] = sha384_h0[5];
 ctx->h[6] = sha384_h0[6]; ctx->h[7] = sha384_h0[7];
#endif /* !UNROLL_LOOPS */

 ctx->len = 0;
 ctx->tot_len = 0;
}

void sha384_update(sha384_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

 tmp_len = SHA384_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

 memcpy(&ctx->block[ctx->len], message, rem_len);

 if (ctx->len + len < SHA384_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

 new_len = len - rem_len;
 block_nb = new_len / SHA384_BLOCK_SIZE;

 shifted_message = message + rem_len;

 sha512_transf(ctx, ctx->block, 1);
 sha512_transf(ctx, shifted_message, block_nb);

 rem_len = new_len % SHA384_BLOCK_SIZE;

 memcpy(ctx->block, &shifted_message[block_nb << 7],
 rem_len);

 ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 7;
}

void sha384_final(sha384_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

 block_nb = (1 + ((SHA384_BLOCK_SIZE - 17)
 < (ctx->len % SHA384_BLOCK_SIZE)));

 len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 7;

 memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

 sha512_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 6; i++) {
 UNPACK64(ctx->h[i], &digest[i << 3]);
 }
#else
 UNPACK64(ctx->h[0], &digest[0]);
 UNPACK64(ctx->h[1], &digest[8]);
 UNPACK64(ctx->h[2], &digest[16]);
 UNPACK64(ctx->h[3], &digest[24]);
 UNPACK64(ctx->h[4], &digest[32]);
 UNPACK64(ctx->h[5], &digest[40]);
#endif /* !UNROLL_LOOPS */
}

/* SHA-224 functions */

void sha224(const unsigned char* message, unsigned int len,
 unsigned char* digest)
{
 sha224_ctx ctx;

 sha224_init(&ctx);
 sha224_update(&ctx, message, len);
 sha224_final(&ctx, digest);
}

void sha224_init(sha224_ctx* ctx)
{
#ifndef UNROLL_LOOPS
 int i;
 for (i = 0; i < 8; i++) {
 ctx->h[i] = sha224_h0[i];
 }
#else
 ctx->h[0] = sha224_h0[0]; ctx->h[1] = sha224_h0[1];
 ctx->h[2] = sha224_h0[2]; ctx->h[3] = sha224_h0[3];
 ctx->h[4] = sha224_h0[4]; ctx->h[5] = sha224_h0[5];
 ctx->h[6] = sha224_h0[6]; ctx->h[7] = sha224_h0[7];
#endif /* !UNROLL_LOOPS */

 ctx->len = 0;
 ctx->tot_len = 0;
}

void sha224_update(sha224_ctx* ctx, const unsigned char* message,
 unsigned int len)
{
 unsigned int block_nb;
 unsigned int new_len, rem_len, tmp_len;
 const unsigned char* shifted_message;

 tmp_len = SHA224_BLOCK_SIZE - ctx->len;
 rem_len = len < tmp_len ? len : tmp_len;

 memcpy(&ctx->block[ctx->len], message, rem_len);

 if (ctx->len + len < SHA224_BLOCK_SIZE) {
 ctx->len += len;
 return;
 }

 new_len = len - rem_len;
 block_nb = new_len / SHA224_BLOCK_SIZE;

 shifted_message = message + rem_len;

 sha256_transf(ctx, ctx->block, 1);
 sha256_transf(ctx, shifted_message, block_nb);

 rem_len = new_len % SHA224_BLOCK_SIZE;

 memcpy(ctx->block, &shifted_message[block_nb << 6],
 rem_len);

 ctx->len = rem_len;
 ctx->tot_len += (block_nb + 1) << 6;
}

void sha224_final(sha224_ctx* ctx, unsigned char* digest)
{
 unsigned int block_nb;
 unsigned int pm_len;
 unsigned int len_b;

#ifndef UNROLL_LOOPS
 int i;
#endif

 block_nb = (1 + ((SHA224_BLOCK_SIZE - 9)
 < (ctx->len % SHA224_BLOCK_SIZE)));

 len_b = (ctx->tot_len + ctx->len) << 3;
 pm_len = block_nb << 6;

 memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
 ctx->block[ctx->len] = 0x80;
 UNPACK32(len_b, ctx->block + pm_len - 4);

 sha256_transf(ctx, ctx->block, block_nb);

#ifndef UNROLL_LOOPS
 for (i = 0; i < 7; i++) {
 UNPACK32(ctx->h[i], &digest[i << 2]);
 }
#else
 UNPACK32(ctx->h[0], &digest[0]);
 UNPACK32(ctx->h[1], &digest[4]);
 UNPACK32(ctx->h[2], &digest[8]);
 UNPACK32(ctx->h[3], &digest[12]);
 UNPACK32(ctx->h[4], &digest[16]);
 UNPACK32(ctx->h[5], &digest[20]);
 UNPACK32(ctx->h[6], &digest[24]);
#endif /* !UNROLL_LOOPS */
}

#ifdef TEST_VECTORS

/* FIPS 180-2 Validation tests */

#include <stdio.h>
#include <stdlib.h>

void test(const char* vector, unsigned char* digest,
 unsigned int digest_size)
{
 char output[2 * SHA512_DIGEST_SIZE + 1];
 int i;

 output[2 * digest_size] = '0円';

 for (i = 0; i < (int)digest_size; i++) {
 sprintf(output + 2 * i, "%02x", digest[i]);
 }

 printf("H: %s\n", output);
 if (strcmp(vector, output)) {
 fprintf(stderr, "Test failed.\n");
 exit(EXIT_FAILURE);
 }
}

int main(void)
{
 static const char* vectors[4][3] =
 { /* SHA-224 */
 {
 "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7",
 "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525",
 "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67",
 },
 /* SHA-256 */
 {
 "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
 "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1",
 "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0",
 },
 /* SHA-384 */
 {
 "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"
 "8086072ba1e7cc2358baeca134c825a7",
 "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"
 "fcc7c71a557e2db966c3e9fa91746039",
 "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"
 "07b8b3dc38ecc4ebae97ddd87f3d8985",
 },
 /* SHA-512 */
 {
 "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"
 "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
 "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"
 "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909",
 "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"
 "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b"
 }
 };

 static const char message1[] = "abc";
 static const char message2a[] = "abcdbcdecdefdefgefghfghighijhi"
 "jkijkljklmklmnlmnomnopnopq";
 static const char message2b[] = "abcdefghbcdefghicdefghijdefghijkefghij"
 "klfghijklmghijklmnhijklmnoijklmnopjklm"
 "nopqklmnopqrlmnopqrsmnopqrstnopqrstu";
 unsigned char* message3;
 unsigned int message3_len = 1000000;
 unsigned char digest[SHA512_DIGEST_SIZE];

 message3 = malloc(message3_len);
 if (message3 == NULL) {
 fprintf(stderr, "Can't allocate memory\n");
 return -1;
 }
 memset(message3, 'a', message3_len);

 printf("SHA-2 FIPS 180-2 Validation tests\n\n");
 printf("SHA-224 Test vectors\n");

 sha224((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[0][0], digest, SHA224_DIGEST_SIZE);
 sha224((const unsigned char*)message2a, strlen(message2a), digest);
 test(vectors[0][1], digest, SHA224_DIGEST_SIZE);
 sha224(message3, message3_len, digest);
 test(vectors[0][2], digest, SHA224_DIGEST_SIZE);
 printf("\n");

 printf("SHA-256 Test vectors\n");

 sha256((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[1][0], digest, SHA256_DIGEST_SIZE);
 sha256((const unsigned char*)message2a, strlen(message2a), digest);
 test(vectors[1][1], digest, SHA256_DIGEST_SIZE);
 sha256(message3, message3_len, digest);
 test(vectors[1][2], digest, SHA256_DIGEST_SIZE);
 printf("\n");

 printf("SHA-384 Test vectors\n");

 sha384((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[2][0], digest, SHA384_DIGEST_SIZE);
 sha384((const unsigned char*)message2b, strlen(message2b), digest);
 test(vectors[2][1], digest, SHA384_DIGEST_SIZE);
 sha384(message3, message3_len, digest);
 test(vectors[2][2], digest, SHA384_DIGEST_SIZE);
 printf("\n");

 printf("SHA-512 Test vectors\n");

 sha512((const unsigned char*)message1, strlen(message1), digest);
 test(vectors[3][0], digest, SHA512_DIGEST_SIZE);
 sha512((const unsigned char*)message2b, strlen(message2b), digest);
 test(vectors[3][1], digest, SHA512_DIGEST_SIZE);
 sha512(message3, message3_len, digest);
 test(vectors[3][2], digest, SHA512_DIGEST_SIZE);
 printf("\n");

 printf("All tests passed.\n");

 return 0;
}

#endif /* TEST_VECTORS */

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About

CPPS是一种轻量级的嵌入式脚本语言,其语法类似于C++。它具有当前主流语言的许多特性,包括协程、面向对象、lambda、闭包、泛型变量、自定义模块支持、GC垃圾收集和跨平台。CPPS将程序解释为字节码,通过内置语法解析在虚拟机中运行

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cpps v1.0.3 beta

The Open Source Evaluation Index is derived from the OSS Compass evaluation system, which evaluates projects around the following three dimensions

1. Open source ecosystem

Productivity: To evaluate the ability of open-source projects to output software artifacts and open-source value.
Innovation: Used to evaluate the degree of diversity of open source software and its ecosystem.
Robustness: Used to evaluate the ability of open-source projects to resist internal and external interference and self recover in the face of changing development environments.

2. Collaboration, People, Software

Collaboration: represents the degree and depth of collaboration in open source development behavior.
Observe the influence of core personnel in open source projects, and examine the evaluations of users and developers on open source projects from a third-party perspective.
Software: Evaluate the value of products exported from open-source projects and their ultimate destination. It is also a concrete manifestation of "open source software", one of the oldest mainstream directions in open source evaluation.

3. Evaluation model

Based on the dimensions of "open source ecosystem" and "collaboration, people, and software", identify quantifiable indicators directly or indirectly related to this goal, quantitatively evaluate the health and ecology of open source projects, and ultimately form an open source evaluation index.