1 /********************************************************************** 2 Copyright(c) 2011-2017 Intel Corporation All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of Intel Corporation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 **********************************************************************/ 29 30 #include "mh_sha256_internal.h" 31 #include <string.h> 32 33 //////////////////////////////////////////////////////////////////////// 34 //////////////////////////////////////////////////////////////////////// 35 // Reference SHA256 Functions for mh_sha256 36 //////////////////////////////////////////////////////////////////////// 37 //////////////////////////////////////////////////////////////////////// 38 39 #define W(x) w[(x) & 15] 40 41 #define step(i,a,b,c,d,e,f,g,h,k) \ 42 if (i<16) W(i) = to_be32(ww[i]); \ 43 else \ 44 W(i) = W(i-16) + S0(W(i-15)) + W(i-7) + S1(W(i-2)); \ 45 t2 = s0(a) + maj(a,b,c); \ 46 t1 = h + s1(e) + ch(e,f,g) + k + W(i); \ 47 d += t1; \ 48 h = t1 + t2; 49 50 void sha256_single_for_mh_sha256(const uint8_t * data, uint32_t digest[]) 51 { 52 uint32_t a, b, c, d, e, f, g, h, t1, t2; 53 uint32_t w[16]; 54 uint32_t *ww = (uint32_t *) data; 55 56 a = digest[0]; 57 b = digest[1]; 58 c = digest[2]; 59 d = digest[3]; 60 e = digest[4]; 61 f = digest[5]; 62 g = digest[6]; 63 h = digest[7]; 64 65 step(0, a, b, c, d, e, f, g, h, 0x428a2f98); 66 step(1, h, a, b, c, d, e, f, g, 0x71374491); 67 step(2, g, h, a, b, c, d, e, f, 0xb5c0fbcf); 68 step(3, f, g, h, a, b, c, d, e, 0xe9b5dba5); 69 step(4, e, f, g, h, a, b, c, d, 0x3956c25b); 70 step(5, d, e, f, g, h, a, b, c, 0x59f111f1); 71 step(6, c, d, e, f, g, h, a, b, 0x923f82a4); 72 step(7, b, c, d, e, f, g, h, a, 0xab1c5ed5); 73 step(8, a, b, c, d, e, f, g, h, 0xd807aa98); 74 step(9, h, a, b, c, d, e, f, g, 0x12835b01); 75 step(10, g, h, a, b, c, d, e, f, 0x243185be); 76 step(11, f, g, h, a, b, c, d, e, 0x550c7dc3); 77 step(12, e, f, g, h, a, b, c, d, 0x72be5d74); 78 step(13, d, e, f, g, h, a, b, c, 0x80deb1fe); 79 step(14, c, d, e, f, g, h, a, b, 0x9bdc06a7); 80 step(15, b, c, d, e, f, g, h, a, 0xc19bf174); 81 step(16, a, b, c, d, e, f, g, h, 0xe49b69c1); 82 step(17, h, a, b, c, d, e, f, g, 0xefbe4786); 83 step(18, g, h, a, b, c, d, e, f, 0x0fc19dc6); 84 step(19, f, g, h, a, b, c, d, e, 0x240ca1cc); 85 step(20, e, f, g, h, a, b, c, d, 0x2de92c6f); 86 step(21, d, e, f, g, h, a, b, c, 0x4a7484aa); 87 step(22, c, d, e, f, g, h, a, b, 0x5cb0a9dc); 88 step(23, b, c, d, e, f, g, h, a, 0x76f988da); 89 step(24, a, b, c, d, e, f, g, h, 0x983e5152); 90 step(25, h, a, b, c, d, e, f, g, 0xa831c66d); 91 step(26, g, h, a, b, c, d, e, f, 0xb00327c8); 92 step(27, f, g, h, a, b, c, d, e, 0xbf597fc7); 93 step(28, e, f, g, h, a, b, c, d, 0xc6e00bf3); 94 step(29, d, e, f, g, h, a, b, c, 0xd5a79147); 95 step(30, c, d, e, f, g, h, a, b, 0x06ca6351); 96 step(31, b, c, d, e, f, g, h, a, 0x14292967); 97 step(32, a, b, c, d, e, f, g, h, 0x27b70a85); 98 step(33, h, a, b, c, d, e, f, g, 0x2e1b2138); 99 step(34, g, h, a, b, c, d, e, f, 0x4d2c6dfc); 100 step(35, f, g, h, a, b, c, d, e, 0x53380d13); 101 step(36, e, f, g, h, a, b, c, d, 0x650a7354); 102 step(37, d, e, f, g, h, a, b, c, 0x766a0abb); 103 step(38, c, d, e, f, g, h, a, b, 0x81c2c92e); 104 step(39, b, c, d, e, f, g, h, a, 0x92722c85); 105 step(40, a, b, c, d, e, f, g, h, 0xa2bfe8a1); 106 step(41, h, a, b, c, d, e, f, g, 0xa81a664b); 107 step(42, g, h, a, b, c, d, e, f, 0xc24b8b70); 108 step(43, f, g, h, a, b, c, d, e, 0xc76c51a3); 109 step(44, e, f, g, h, a, b, c, d, 0xd192e819); 110 step(45, d, e, f, g, h, a, b, c, 0xd6990624); 111 step(46, c, d, e, f, g, h, a, b, 0xf40e3585); 112 step(47, b, c, d, e, f, g, h, a, 0x106aa070); 113 step(48, a, b, c, d, e, f, g, h, 0x19a4c116); 114 step(49, h, a, b, c, d, e, f, g, 0x1e376c08); 115 step(50, g, h, a, b, c, d, e, f, 0x2748774c); 116 step(51, f, g, h, a, b, c, d, e, 0x34b0bcb5); 117 step(52, e, f, g, h, a, b, c, d, 0x391c0cb3); 118 step(53, d, e, f, g, h, a, b, c, 0x4ed8aa4a); 119 step(54, c, d, e, f, g, h, a, b, 0x5b9cca4f); 120 step(55, b, c, d, e, f, g, h, a, 0x682e6ff3); 121 step(56, a, b, c, d, e, f, g, h, 0x748f82ee); 122 step(57, h, a, b, c, d, e, f, g, 0x78a5636f); 123 step(58, g, h, a, b, c, d, e, f, 0x84c87814); 124 step(59, f, g, h, a, b, c, d, e, 0x8cc70208); 125 step(60, e, f, g, h, a, b, c, d, 0x90befffa); 126 step(61, d, e, f, g, h, a, b, c, 0xa4506ceb); 127 step(62, c, d, e, f, g, h, a, b, 0xbef9a3f7); 128 step(63, b, c, d, e, f, g, h, a, 0xc67178f2); 129 130 digest[0] += a; 131 digest[1] += b; 132 digest[2] += c; 133 digest[3] += d; 134 digest[4] += e; 135 digest[5] += f; 136 digest[6] += g; 137 digest[7] += h; 138 } 139 140 void sha256_for_mh_sha256(const uint8_t * input_data, uint32_t * digest, const uint32_t len) 141 { 142 uint32_t i, j; 143 uint8_t buf[2 * SHA256_BLOCK_SIZE]; 144 145 digest[0] = MH_SHA256_H0; 146 digest[1] = MH_SHA256_H1; 147 digest[2] = MH_SHA256_H2; 148 digest[3] = MH_SHA256_H3; 149 digest[4] = MH_SHA256_H4; 150 digest[5] = MH_SHA256_H5; 151 digest[6] = MH_SHA256_H6; 152 digest[7] = MH_SHA256_H7; 153 154 i = len; 155 while (i >= SHA256_BLOCK_SIZE) { 156 sha256_single_for_mh_sha256(input_data, digest); 157 input_data += SHA256_BLOCK_SIZE; 158 i -= SHA256_BLOCK_SIZE; 159 } 160 161 memcpy(buf, input_data, i); 162 buf[i++] = 0x80; 163 for (j = i; j < ((2 * SHA256_BLOCK_SIZE) - 8); j++) 164 buf[j] = 0; 165 166 if (i > SHA256_BLOCK_SIZE - 8) 167 i = 2 * SHA256_BLOCK_SIZE; 168 else 169 i = SHA256_BLOCK_SIZE; 170 171 *(uint64_t *) (buf + i - 8) = to_be64((uint64_t) len * 8); 172 173 sha256_single_for_mh_sha256(buf, digest); 174 if (i == (2 * SHA256_BLOCK_SIZE)) 175 sha256_single_for_mh_sha256(buf + SHA256_BLOCK_SIZE, digest); 176 } 177