| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * 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 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. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/sha.h> |
| |
| #include <string.h> |
| |
| #include <openssl/mem.h> |
| |
| #include "internal.h" |
| #include "../../internal.h" |
| |
| |
| int SHA224_Init(SHA256_CTX *sha) { |
| OPENSSL_memset(sha, 0, sizeof(SHA256_CTX)); |
| sha->h[0] = 0xc1059ed8UL; |
| sha->h[1] = 0x367cd507UL; |
| sha->h[2] = 0x3070dd17UL; |
| sha->h[3] = 0xf70e5939UL; |
| sha->h[4] = 0xffc00b31UL; |
| sha->h[5] = 0x68581511UL; |
| sha->h[6] = 0x64f98fa7UL; |
| sha->h[7] = 0xbefa4fa4UL; |
| sha->md_len = SHA224_DIGEST_LENGTH; |
| return 1; |
| } |
| |
| int SHA256_Init(SHA256_CTX *sha) { |
| OPENSSL_memset(sha, 0, sizeof(SHA256_CTX)); |
| sha->h[0] = 0x6a09e667UL; |
| sha->h[1] = 0xbb67ae85UL; |
| sha->h[2] = 0x3c6ef372UL; |
| sha->h[3] = 0xa54ff53aUL; |
| sha->h[4] = 0x510e527fUL; |
| sha->h[5] = 0x9b05688cUL; |
| sha->h[6] = 0x1f83d9abUL; |
| sha->h[7] = 0x5be0cd19UL; |
| sha->md_len = SHA256_DIGEST_LENGTH; |
| return 1; |
| } |
| |
| uint8_t *SHA224(const uint8_t *data, size_t len, |
| uint8_t out[SHA224_DIGEST_LENGTH]) { |
| SHA256_CTX ctx; |
| SHA224_Init(&ctx); |
| SHA224_Update(&ctx, data, len); |
| SHA224_Final(out, &ctx); |
| OPENSSL_cleanse(&ctx, sizeof(ctx)); |
| return out; |
| } |
| |
| uint8_t *SHA256(const uint8_t *data, size_t len, |
| uint8_t out[SHA256_DIGEST_LENGTH]) { |
| SHA256_CTX ctx; |
| SHA256_Init(&ctx); |
| SHA256_Update(&ctx, data, len); |
| SHA256_Final(out, &ctx); |
| OPENSSL_cleanse(&ctx, sizeof(ctx)); |
| return out; |
| } |
| |
| int SHA224_Update(SHA256_CTX *ctx, const void *data, size_t len) { |
| return SHA256_Update(ctx, data, len); |
| } |
| |
| int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx) { |
| // SHA224_Init sets |ctx->md_len| to |SHA224_DIGEST_LENGTH|, so this has a |
| // smaller output. |
| return SHA256_Final(out, ctx); |
| } |
| |
| #define DATA_ORDER_IS_BIG_ENDIAN |
| |
| #define HASH_CTX SHA256_CTX |
| #define HASH_CBLOCK 64 |
| #define HASH_DIGEST_LENGTH 32 |
| |
| // Note that FIPS180-2 discusses "Truncation of the Hash Function Output." |
| // default: case below covers for it. It's not clear however if it's permitted |
| // to truncate to amount of bytes not divisible by 4. I bet not, but if it is, |
| // then default: case shall be extended. For reference. Idea behind separate |
| // cases for pre-defined lenghts is to let the compiler decide if it's |
| // appropriate to unroll small loops. |
| // |
| // TODO(davidben): The small |md_len| case is one of the few places a low-level |
| // hash 'final' function can fail. This should never happen. |
| #define HASH_MAKE_STRING(c, s) \ |
| do { \ |
| uint32_t ll; \ |
| unsigned int nn; \ |
| switch ((c)->md_len) { \ |
| case SHA224_DIGEST_LENGTH: \ |
| for (nn = 0; nn < SHA224_DIGEST_LENGTH / 4; nn++) { \ |
| ll = (c)->h[nn]; \ |
| HOST_l2c(ll, (s)); \ |
| } \ |
| break; \ |
| case SHA256_DIGEST_LENGTH: \ |
| for (nn = 0; nn < SHA256_DIGEST_LENGTH / 4; nn++) { \ |
| ll = (c)->h[nn]; \ |
| HOST_l2c(ll, (s)); \ |
| } \ |
| break; \ |
| default: \ |
| if ((c)->md_len > SHA256_DIGEST_LENGTH) { \ |
| return 0; \ |
| } \ |
| for (nn = 0; nn < (c)->md_len / 4; nn++) { \ |
| ll = (c)->h[nn]; \ |
| HOST_l2c(ll, (s)); \ |
| } \ |
| break; \ |
| } \ |
| } while (0) |
| |
| |
| #define HASH_UPDATE SHA256_Update |
| #define HASH_TRANSFORM SHA256_Transform |
| #define HASH_FINAL SHA256_Final |
| #define HASH_BLOCK_DATA_ORDER sha256_block_data_order |
| #ifndef SHA256_ASM |
| static void sha256_block_data_order(uint32_t *state, const uint8_t *in, |
| size_t num); |
| #endif |
| |
| #include "../digest/md32_common.h" |
| |
| #ifndef SHA256_ASM |
| static const uint32_t K256[64] = { |
| 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL, |
| 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL, |
| 0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, |
| 0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL, |
| 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL, |
| 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL, |
| 0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, |
| 0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL, |
| 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL, |
| 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL, |
| 0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, |
| 0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL, |
| 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL}; |
| |
| #define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n)))) |
| |
| // FIPS specification refers to right rotations, while our ROTATE macro |
| // is left one. This is why you might notice that rotation coefficients |
| // differ from those observed in FIPS document by 32-N... |
| #define Sigma0(x) (ROTATE((x), 30) ^ ROTATE((x), 19) ^ ROTATE((x), 10)) |
| #define Sigma1(x) (ROTATE((x), 26) ^ ROTATE((x), 21) ^ ROTATE((x), 7)) |
| #define sigma0(x) (ROTATE((x), 25) ^ ROTATE((x), 14) ^ ((x) >> 3)) |
| #define sigma1(x) (ROTATE((x), 15) ^ ROTATE((x), 13) ^ ((x) >> 10)) |
| |
| #define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z))) |
| #define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) |
| |
| #define ROUND_00_15(i, a, b, c, d, e, f, g, h) \ |
| do { \ |
| T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \ |
| h = Sigma0(a) + Maj(a, b, c); \ |
| d += T1; \ |
| h += T1; \ |
| } while (0) |
| |
| #define ROUND_16_63(i, a, b, c, d, e, f, g, h, X) \ |
| do { \ |
| s0 = X[(i + 1) & 0x0f]; \ |
| s0 = sigma0(s0); \ |
| s1 = X[(i + 14) & 0x0f]; \ |
| s1 = sigma1(s1); \ |
| T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \ |
| ROUND_00_15(i, a, b, c, d, e, f, g, h); \ |
| } while (0) |
| |
| static void sha256_block_data_order(uint32_t *state, const uint8_t *data, |
| size_t num) { |
| uint32_t a, b, c, d, e, f, g, h, s0, s1, T1; |
| uint32_t X[16]; |
| int i; |
| |
| while (num--) { |
| a = state[0]; |
| b = state[1]; |
| c = state[2]; |
| d = state[3]; |
| e = state[4]; |
| f = state[5]; |
| g = state[6]; |
| h = state[7]; |
| |
| uint32_t l; |
| |
| HOST_c2l(data, l); |
| T1 = X[0] = l; |
| ROUND_00_15(0, a, b, c, d, e, f, g, h); |
| HOST_c2l(data, l); |
| T1 = X[1] = l; |
| ROUND_00_15(1, h, a, b, c, d, e, f, g); |
| HOST_c2l(data, l); |
| T1 = X[2] = l; |
| ROUND_00_15(2, g, h, a, b, c, d, e, f); |
| HOST_c2l(data, l); |
| T1 = X[3] = l; |
| ROUND_00_15(3, f, g, h, a, b, c, d, e); |
| HOST_c2l(data, l); |
| T1 = X[4] = l; |
| ROUND_00_15(4, e, f, g, h, a, b, c, d); |
| HOST_c2l(data, l); |
| T1 = X[5] = l; |
| ROUND_00_15(5, d, e, f, g, h, a, b, c); |
| HOST_c2l(data, l); |
| T1 = X[6] = l; |
| ROUND_00_15(6, c, d, e, f, g, h, a, b); |
| HOST_c2l(data, l); |
| T1 = X[7] = l; |
| ROUND_00_15(7, b, c, d, e, f, g, h, a); |
| HOST_c2l(data, l); |
| T1 = X[8] = l; |
| ROUND_00_15(8, a, b, c, d, e, f, g, h); |
| HOST_c2l(data, l); |
| T1 = X[9] = l; |
| ROUND_00_15(9, h, a, b, c, d, e, f, g); |
| HOST_c2l(data, l); |
| T1 = X[10] = l; |
| ROUND_00_15(10, g, h, a, b, c, d, e, f); |
| HOST_c2l(data, l); |
| T1 = X[11] = l; |
| ROUND_00_15(11, f, g, h, a, b, c, d, e); |
| HOST_c2l(data, l); |
| T1 = X[12] = l; |
| ROUND_00_15(12, e, f, g, h, a, b, c, d); |
| HOST_c2l(data, l); |
| T1 = X[13] = l; |
| ROUND_00_15(13, d, e, f, g, h, a, b, c); |
| HOST_c2l(data, l); |
| T1 = X[14] = l; |
| ROUND_00_15(14, c, d, e, f, g, h, a, b); |
| HOST_c2l(data, l); |
| T1 = X[15] = l; |
| ROUND_00_15(15, b, c, d, e, f, g, h, a); |
| |
| for (i = 16; i < 64; i += 8) { |
| ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X); |
| ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X); |
| ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X); |
| ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X); |
| ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X); |
| ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X); |
| ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X); |
| ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X); |
| } |
| |
| state[0] += a; |
| state[1] += b; |
| state[2] += c; |
| state[3] += d; |
| state[4] += e; |
| state[5] += f; |
| state[6] += g; |
| state[7] += h; |
| } |
| } |
| |
| #endif // !SHA256_ASM |
| |
| void SHA256_TransformBlocks(uint32_t state[8], const uint8_t *data, |
| size_t num_blocks) { |
| sha256_block_data_order(state, data, num_blocks); |
| } |
| |
| #undef DATA_ORDER_IS_BIG_ENDIAN |
| #undef HASH_CTX |
| #undef HASH_CBLOCK |
| #undef HASH_DIGEST_LENGTH |
| #undef HASH_MAKE_STRING |
| #undef HASH_UPDATE |
| #undef HASH_TRANSFORM |
| #undef HASH_FINAL |
| #undef HASH_BLOCK_DATA_ORDER |
| #undef ROTATE |
| #undef Sigma0 |
| #undef Sigma1 |
| #undef sigma0 |
| #undef sigma1 |
| #undef Ch |
| #undef Maj |
| #undef ROUND_00_15 |
| #undef ROUND_16_63 |
| #undef HOST_c2l |
| #undef HOST_l2c |
