Geremia G / Crypto

Fork of François Berder Crypto, fixed AES CBC and small rework

Dependents:   AES_example shaun_larada Smartage

Fork of Crypto by Francois Berder

SHA2_32.cpp@2:473bac39ae7c, 2013-09-09 (annotated)

Committer:
feb11
Date:
Mon Sep 09 16:16:24 2013 +0000
Revision:
2:473bac39ae7c
Parent:
0:7a1237bd2d13
Child:
3:85c6ee25cf3e
improved performance of MD2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
feb11 0:7a1237bd2d13 1 #include "SHA2_32.h"
feb11 0:7a1237bd2d13 2 #include <string.h>
feb11 0:7a1237bd2d13 3 #include <stdio.h>
feb11 0:7a1237bd2d13 4 #include <stdlib.h>
feb11 0:7a1237bd2d13 5
feb11 0:7a1237bd2d13 6 static const uint32_t K[] =
feb11 0:7a1237bd2d13 7 {
feb11 0:7a1237bd2d13 8 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
feb11 0:7a1237bd2d13 9 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
feb11 0:7a1237bd2d13 10 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
feb11 0:7a1237bd2d13 11 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
feb11 0:7a1237bd2d13 12 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
feb11 0:7a1237bd2d13 13 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
feb11 0:7a1237bd2d13 14 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
feb11 0:7a1237bd2d13 15 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
feb11 0:7a1237bd2d13 16 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
feb11 0:7a1237bd2d13 17 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
feb11 0:7a1237bd2d13 18 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
feb11 0:7a1237bd2d13 19 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
feb11 0:7a1237bd2d13 20 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
feb11 0:7a1237bd2d13 21 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
feb11 0:7a1237bd2d13 22 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
feb11 0:7a1237bd2d13 23 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
feb11 0:7a1237bd2d13 24 };
feb11 0:7a1237bd2d13 25
feb11 0:7a1237bd2d13 26 static uint32_t rotLeft(uint32_t w, uint8_t n)
feb11 0:7a1237bd2d13 27 {
feb11 0:7a1237bd2d13 28 return (w << n) | (w >> (32-n));
feb11 0:7a1237bd2d13 29 }
feb11 0:7a1237bd2d13 30
feb11 0:7a1237bd2d13 31 static uint32_t rotRight(uint32_t w, uint8_t n)
feb11 0:7a1237bd2d13 32 {
feb11 0:7a1237bd2d13 33 return rotLeft(w,32-n);
feb11 0:7a1237bd2d13 34 }
feb11 0:7a1237bd2d13 35
feb11 0:7a1237bd2d13 36 static uint32_t CH(uint32_t x, uint32_t y, uint32_t z)
feb11 0:7a1237bd2d13 37 {
feb11 0:7a1237bd2d13 38 return (x & y) ^ ((~x) & z);
feb11 0:7a1237bd2d13 39 }
feb11 0:7a1237bd2d13 40
feb11 0:7a1237bd2d13 41 static uint32_t MAJ(uint32_t x, uint32_t y, uint32_t z)
feb11 0:7a1237bd2d13 42 {
feb11 0:7a1237bd2d13 43 return (x & y) ^ (x & z) ^ (y & z);
feb11 0:7a1237bd2d13 44 }
feb11 0:7a1237bd2d13 45
feb11 0:7a1237bd2d13 46 static uint32_t BSIG0(uint32_t x)
feb11 0:7a1237bd2d13 47 {
feb11 0:7a1237bd2d13 48 return rotRight(x,2) ^ rotRight(x,13) ^ rotRight(x,22);
feb11 0:7a1237bd2d13 49 }
feb11 0:7a1237bd2d13 50
feb11 0:7a1237bd2d13 51 static uint32_t BSIG1(uint32_t x)
feb11 0:7a1237bd2d13 52 {
feb11 0:7a1237bd2d13 53 return rotRight(x,6) ^ rotRight(x,11) ^ rotRight(x,25);
feb11 0:7a1237bd2d13 54 }
feb11 0:7a1237bd2d13 55
feb11 0:7a1237bd2d13 56 static uint32_t SSIG0(uint32_t x)
feb11 0:7a1237bd2d13 57 {
feb11 0:7a1237bd2d13 58 return rotRight(x,7) ^ rotRight(x,18) ^ (x >> 3);
feb11 0:7a1237bd2d13 59 }
feb11 0:7a1237bd2d13 60
feb11 0:7a1237bd2d13 61 static uint32_t SSIG1(uint32_t x)
feb11 0:7a1237bd2d13 62 {
feb11 0:7a1237bd2d13 63 return rotRight(x,17) ^ rotRight(x,19) ^ (x >> 10);
feb11 0:7a1237bd2d13 64 }
feb11 0:7a1237bd2d13 65
feb11 0:7a1237bd2d13 66
feb11 0:7a1237bd2d13 67 static const uint32_t H[] =
feb11 0:7a1237bd2d13 68 {
feb11 0:7a1237bd2d13 69 // SHA-224
feb11 0:7a1237bd2d13 70 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
feb11 0:7a1237bd2d13 71 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4,
feb11 0:7a1237bd2d13 72
feb11 0:7a1237bd2d13 73 // SHA-256
feb11 0:7a1237bd2d13 74 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
feb11 0:7a1237bd2d13 75 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
feb11 0:7a1237bd2d13 76 };
feb11 0:7a1237bd2d13 77
feb11 0:7a1237bd2d13 78 SHA2_32::SHA2_32(SHA_32_TYPE t):
feb11 0:7a1237bd2d13 79 type(t),
feb11 0:7a1237bd2d13 80 totalBufferLength(0),
feb11 0:7a1237bd2d13 81 bufferLength(0)
feb11 0:7a1237bd2d13 82 {
feb11 0:7a1237bd2d13 83 switch(type)
feb11 0:7a1237bd2d13 84 {
feb11 0:7a1237bd2d13 85 case SHA_224:
feb11 0:7a1237bd2d13 86 h0 = H[0];
feb11 0:7a1237bd2d13 87 h1 = H[1];
feb11 0:7a1237bd2d13 88 h2 = H[2];
feb11 0:7a1237bd2d13 89 h3 = H[3];
feb11 0:7a1237bd2d13 90 h4 = H[4];
feb11 0:7a1237bd2d13 91 h5 = H[5];
feb11 0:7a1237bd2d13 92 h6 = H[6];
feb11 0:7a1237bd2d13 93 h7 = H[7];
feb11 0:7a1237bd2d13 94 break;
feb11 0:7a1237bd2d13 95
feb11 0:7a1237bd2d13 96 case SHA_256:
feb11 0:7a1237bd2d13 97 h0 = H[8];
feb11 0:7a1237bd2d13 98 h1 = H[9];
feb11 0:7a1237bd2d13 99 h2 = H[10];
feb11 0:7a1237bd2d13 100 h3 = H[11];
feb11 0:7a1237bd2d13 101 h4 = H[12];
feb11 0:7a1237bd2d13 102 h5 = H[13];
feb11 0:7a1237bd2d13 103 h6 = H[14];
feb11 0:7a1237bd2d13 104 h7 = H[15];
feb11 0:7a1237bd2d13 105 break;
feb11 0:7a1237bd2d13 106 }
feb11 0:7a1237bd2d13 107 }
feb11 0:7a1237bd2d13 108
feb11 0:7a1237bd2d13 109 void SHA2_32::add(uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 110 {
feb11 0:7a1237bd2d13 111 if(length < 64-bufferLength)
feb11 0:7a1237bd2d13 112 {
feb11 0:7a1237bd2d13 113 memcpy(&buffer[bufferLength], in, length);
feb11 0:7a1237bd2d13 114 bufferLength += length;
feb11 0:7a1237bd2d13 115 totalBufferLength += length;
feb11 0:7a1237bd2d13 116 return;
feb11 0:7a1237bd2d13 117 }
feb11 0:7a1237bd2d13 118 int offset = 64-bufferLength;
feb11 0:7a1237bd2d13 119 memcpy(&buffer[bufferLength], in, offset);
feb11 0:7a1237bd2d13 120 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 121 while(length-offset > 64)
feb11 0:7a1237bd2d13 122 {
feb11 0:7a1237bd2d13 123 memcpy(buffer, &in[offset], 64);
feb11 0:7a1237bd2d13 124 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 125 offset += 64;
feb11 0:7a1237bd2d13 126 }
feb11 0:7a1237bd2d13 127 if(offset > length)
feb11 0:7a1237bd2d13 128 offset -= 64;
feb11 0:7a1237bd2d13 129 bufferLength = length - offset;
feb11 0:7a1237bd2d13 130 memcpy(buffer, &in[offset], bufferLength);
feb11 0:7a1237bd2d13 131 totalBufferLength += length;
feb11 0:7a1237bd2d13 132 }
feb11 0:7a1237bd2d13 133
feb11 0:7a1237bd2d13 134 void SHA2_32::computeDigest(uint8_t *digest)
feb11 0:7a1237bd2d13 135 {
feb11 0:7a1237bd2d13 136 uint16_t padding;
feb11 0:7a1237bd2d13 137 if(totalBufferLength % 64 < 56)
feb11 0:7a1237bd2d13 138 padding = 56 - (totalBufferLength % 64);
feb11 0:7a1237bd2d13 139 else
feb11 0:7a1237bd2d13 140 padding = 56 + (64 - (totalBufferLength % 64));
feb11 0:7a1237bd2d13 141 uint8_t val = 0x80;
feb11 0:7a1237bd2d13 142 add(&val, 1);
feb11 0:7a1237bd2d13 143 val = 0;
feb11 0:7a1237bd2d13 144 for(int i = 0; i < padding-1; ++i)
feb11 0:7a1237bd2d13 145 add(&val,1);
feb11 0:7a1237bd2d13 146 totalBufferLength -= padding;
feb11 0:7a1237bd2d13 147 uint64_t lengthBit = totalBufferLength * 8;
feb11 0:7a1237bd2d13 148 uint32_t lengthBitLow = lengthBit;
feb11 0:7a1237bd2d13 149 uint32_t lengthBitHigh = lengthBit >> 32;
feb11 0:7a1237bd2d13 150 uint8_t tmp[4];
feb11 0:7a1237bd2d13 151 tmp[0] = lengthBitHigh >> 24;
feb11 0:7a1237bd2d13 152 tmp[1] = lengthBitHigh >> 16;
feb11 0:7a1237bd2d13 153 tmp[2] = lengthBitHigh >> 8;
feb11 0:7a1237bd2d13 154 tmp[3] = lengthBitHigh;
feb11 0:7a1237bd2d13 155 add(tmp, 4);
feb11 0:7a1237bd2d13 156 tmp[0] = lengthBitLow >> 24;
feb11 0:7a1237bd2d13 157 tmp[1] = lengthBitLow >> 16;
feb11 0:7a1237bd2d13 158 tmp[2] = lengthBitLow >> 8;
feb11 0:7a1237bd2d13 159 tmp[3] = lengthBitLow;
feb11 0:7a1237bd2d13 160 add(tmp, 4);
feb11 0:7a1237bd2d13 161
feb11 0:7a1237bd2d13 162 digest[0] = h0 >> 24;
feb11 0:7a1237bd2d13 163 digest[1] = h0 >> 16;
feb11 0:7a1237bd2d13 164 digest[2] = h0 >> 8;
feb11 0:7a1237bd2d13 165 digest[3] = h0;
feb11 0:7a1237bd2d13 166 digest[4] = h1 >> 24;
feb11 0:7a1237bd2d13 167 digest[5] = h1 >> 16;
feb11 0:7a1237bd2d13 168 digest[6] = h1 >> 8;
feb11 0:7a1237bd2d13 169 digest[7] = h1;
feb11 0:7a1237bd2d13 170 digest[8] = h2 >> 24;
feb11 0:7a1237bd2d13 171 digest[9] = h2 >> 16;
feb11 0:7a1237bd2d13 172 digest[10] = h2 >> 8;
feb11 0:7a1237bd2d13 173 digest[11] = h2;
feb11 0:7a1237bd2d13 174 digest[12] = h3 >> 24;
feb11 0:7a1237bd2d13 175 digest[13] = h3 >> 16;
feb11 0:7a1237bd2d13 176 digest[14] = h3 >> 8;
feb11 0:7a1237bd2d13 177 digest[15] = h3;
feb11 0:7a1237bd2d13 178 digest[16] = h4 >> 24;
feb11 0:7a1237bd2d13 179 digest[17] = h4 >> 16;
feb11 0:7a1237bd2d13 180 digest[18] = h4 >> 8;
feb11 0:7a1237bd2d13 181 digest[19] = h4;
feb11 0:7a1237bd2d13 182 digest[20] = h5 >> 24;
feb11 0:7a1237bd2d13 183 digest[21] = h5 >> 16;
feb11 0:7a1237bd2d13 184 digest[22] = h5 >> 8;
feb11 0:7a1237bd2d13 185 digest[23] = h5;
feb11 0:7a1237bd2d13 186 digest[24] = h6 >> 24;
feb11 0:7a1237bd2d13 187 digest[25] = h6 >> 16;
feb11 0:7a1237bd2d13 188 digest[26] = h6 >> 8;
feb11 0:7a1237bd2d13 189 digest[27] = h6;
feb11 0:7a1237bd2d13 190
feb11 0:7a1237bd2d13 191 if(type == SHA_256)
feb11 0:7a1237bd2d13 192 {
feb11 0:7a1237bd2d13 193 digest[28] = h7 >> 24;
feb11 0:7a1237bd2d13 194 digest[29] = h7 >> 16;
feb11 0:7a1237bd2d13 195 digest[30] = h7 >> 8;
feb11 0:7a1237bd2d13 196 digest[31] = h7;
feb11 0:7a1237bd2d13 197 }
feb11 0:7a1237bd2d13 198
feb11 0:7a1237bd2d13 199 // reset state
feb11 0:7a1237bd2d13 200 switch(type)
feb11 0:7a1237bd2d13 201 {
feb11 0:7a1237bd2d13 202 case SHA_224:
feb11 0:7a1237bd2d13 203 h0 = H[0];
feb11 0:7a1237bd2d13 204 h1 = H[1];
feb11 0:7a1237bd2d13 205 h2 = H[2];
feb11 0:7a1237bd2d13 206 h3 = H[3];
feb11 0:7a1237bd2d13 207 h4 = H[4];
feb11 0:7a1237bd2d13 208 h5 = H[5];
feb11 0:7a1237bd2d13 209 h6 = H[6];
feb11 0:7a1237bd2d13 210 h7 = H[7];
feb11 0:7a1237bd2d13 211 break;
feb11 0:7a1237bd2d13 212
feb11 0:7a1237bd2d13 213 case SHA_256:
feb11 0:7a1237bd2d13 214 h0 = H[8];
feb11 0:7a1237bd2d13 215 h1 = H[9];
feb11 0:7a1237bd2d13 216 h2 = H[10];
feb11 0:7a1237bd2d13 217 h3 = H[11];
feb11 0:7a1237bd2d13 218 h4 = H[12];
feb11 0:7a1237bd2d13 219 h5 = H[13];
feb11 0:7a1237bd2d13 220 h6 = H[14];
feb11 0:7a1237bd2d13 221 h7 = H[15];
feb11 0:7a1237bd2d13 222 break;
feb11 0:7a1237bd2d13 223 }
feb11 0:7a1237bd2d13 224 totalBufferLength = 0;
feb11 0:7a1237bd2d13 225 bufferLength = 0;
feb11 0:7a1237bd2d13 226 }
feb11 0:7a1237bd2d13 227
feb11 0:7a1237bd2d13 228 void SHA2_32::computeBlock(uint32_t *h02,
feb11 0:7a1237bd2d13 229 uint32_t *h12,
feb11 0:7a1237bd2d13 230 uint32_t *h22,
feb11 0:7a1237bd2d13 231 uint32_t *h32,
feb11 0:7a1237bd2d13 232 uint32_t *h42,
feb11 0:7a1237bd2d13 233 uint32_t *h52,
feb11 0:7a1237bd2d13 234 uint32_t *h62,
feb11 0:7a1237bd2d13 235 uint32_t *h72,
feb11 0:7a1237bd2d13 236 uint8_t *buffer)
feb11 0:7a1237bd2d13 237 {
feb11 0:7a1237bd2d13 238 uint32_t w[64];
feb11 0:7a1237bd2d13 239 for(int t = 0; t < 16; ++t)
feb11 2:473bac39ae7c 240 {
feb11 0:7a1237bd2d13 241 w[t] = (buffer[t*4] << 24) | (buffer[t*4+1] << 16) | (buffer[t*4+2] << 8) | buffer[t*4+3];
feb11 2:473bac39ae7c 242 }
feb11 0:7a1237bd2d13 243 for(int t = 16; t < 64; ++t)
feb11 0:7a1237bd2d13 244 w[t] = SSIG1(w[t-2]) + w[t-7] + SSIG0(w[t-15]) + w[t-16];
feb11 0:7a1237bd2d13 245
feb11 0:7a1237bd2d13 246 uint32_t a = *h02, b = *h12, c = *h22, d = *h32, e = *h42, f = *h52, g = *h62, h = *h72;
feb11 0:7a1237bd2d13 247 for(int t = 0; t < 64; ++t)
feb11 0:7a1237bd2d13 248 {
feb11 0:7a1237bd2d13 249 uint32_t T1 = h + BSIG1(e) + CH(e,f,g) + K[t] + w[t];
feb11 0:7a1237bd2d13 250 uint32_t T2 = BSIG0(a) + MAJ(a,b,c);
feb11 0:7a1237bd2d13 251 h = g;
feb11 0:7a1237bd2d13 252 g = f;
feb11 0:7a1237bd2d13 253 f = e;
feb11 0:7a1237bd2d13 254 e = d + T1;
feb11 0:7a1237bd2d13 255 d = c;
feb11 0:7a1237bd2d13 256 c = b;
feb11 0:7a1237bd2d13 257 b = a;
feb11 0:7a1237bd2d13 258 a = T1 + T2;
feb11 0:7a1237bd2d13 259 }
feb11 0:7a1237bd2d13 260
feb11 0:7a1237bd2d13 261 *h02 += a;
feb11 0:7a1237bd2d13 262 *h12 += b;
feb11 0:7a1237bd2d13 263 *h22 += c;
feb11 0:7a1237bd2d13 264 *h32 += d;
feb11 0:7a1237bd2d13 265 *h42 += e;
feb11 0:7a1237bd2d13 266 *h52 += f;
feb11 0:7a1237bd2d13 267 *h62 += g;
feb11 0:7a1237bd2d13 268 *h72 += h;
feb11 0:7a1237bd2d13 269 }
feb11 0:7a1237bd2d13 270
feb11 0:7a1237bd2d13 271 void SHA2_32::computeDigest(SHA_32_TYPE type, uint8_t *digest, uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 272 {
feb11 0:7a1237bd2d13 273 uint32_t h0 = H[type*8], h1 = H[type*8+1], h2 = H[type*8+2], h3 = H[type*8+3];
feb11 0:7a1237bd2d13 274 uint32_t h4 = H[type*8+4], h5 = H[type*8+5], h6 = H[type*8+6], h7 = H[type*8+7];
feb11 0:7a1237bd2d13 275 int offset = 0;
feb11 0:7a1237bd2d13 276 while(length - offset >= 64)
feb11 0:7a1237bd2d13 277 {
feb11 0:7a1237bd2d13 278 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, &in[offset]);
feb11 0:7a1237bd2d13 279 offset += 64;
feb11 0:7a1237bd2d13 280 }
feb11 0:7a1237bd2d13 281 uint8_t bufferLength = length-offset;
feb11 0:7a1237bd2d13 282 uint8_t buffer[64];
feb11 0:7a1237bd2d13 283 memcpy(buffer, &in[offset],bufferLength);
feb11 0:7a1237bd2d13 284 uint16_t padding;
feb11 0:7a1237bd2d13 285 if(length % 64 < 56)
feb11 0:7a1237bd2d13 286 padding = 56 - (length % 64);
feb11 0:7a1237bd2d13 287 else
feb11 0:7a1237bd2d13 288 padding = 56 + (64 - (length % 64));
feb11 0:7a1237bd2d13 289 buffer[bufferLength] = 0x80;
feb11 0:7a1237bd2d13 290 bufferLength++;
feb11 0:7a1237bd2d13 291 padding--;
feb11 0:7a1237bd2d13 292 while(padding > 0)
feb11 0:7a1237bd2d13 293 {
feb11 0:7a1237bd2d13 294 if(bufferLength == 64)
feb11 0:7a1237bd2d13 295 {
feb11 0:7a1237bd2d13 296 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 0:7a1237bd2d13 297 bufferLength = 0;
feb11 0:7a1237bd2d13 298 }
feb11 0:7a1237bd2d13 299 buffer[bufferLength] = 0;
feb11 0:7a1237bd2d13 300 bufferLength++;
feb11 0:7a1237bd2d13 301 padding--;
feb11 0:7a1237bd2d13 302 }
feb11 0:7a1237bd2d13 303 uint64_t lengthBit = length * 8;
feb11 0:7a1237bd2d13 304 uint32_t lengthBitLow = lengthBit;
feb11 0:7a1237bd2d13 305 uint32_t lengthBitHigh = lengthBit >> 32;
feb11 2:473bac39ae7c 306 lengthBitLow = __rev(lengthBitLow);
feb11 2:473bac39ae7c 307 memcpy(&buffer[60], &lengthBitLow, 4);
feb11 2:473bac39ae7c 308 lengthBitHigh = __rev(lengthBitHigh);
feb11 2:473bac39ae7c 309 memcpy(&buffer[56], &lengthBitHigh, 4);
feb11 0:7a1237bd2d13 310 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 0:7a1237bd2d13 311
feb11 2:473bac39ae7c 312 h0 = __rev(h0);
feb11 2:473bac39ae7c 313 h1 = __rev(h1);
feb11 2:473bac39ae7c 314 h2 = __rev(h2);
feb11 2:473bac39ae7c 315 h3 = __rev(h3);
feb11 2:473bac39ae7c 316 h4 = __rev(h4);
feb11 2:473bac39ae7c 317 h5 = __rev(h5);
feb11 2:473bac39ae7c 318 h6 = __rev(h6);
feb11 2:473bac39ae7c 319
feb11 2:473bac39ae7c 320 memcpy(digest, &h0, 4);
feb11 2:473bac39ae7c 321 memcpy(&digest[4], &h1, 4);
feb11 2:473bac39ae7c 322 memcpy(&digest[8], &h2, 4);
feb11 2:473bac39ae7c 323 memcpy(&digest[12], &h3, 4);
feb11 2:473bac39ae7c 324 memcpy(&digest[16], &h4, 4);
feb11 2:473bac39ae7c 325 memcpy(&digest[20], &h5, 4);
feb11 2:473bac39ae7c 326 memcpy(&digest[24], &h6, 4);
feb11 2:473bac39ae7c 327
feb11 0:7a1237bd2d13 328
feb11 0:7a1237bd2d13 329 if(type == SHA_256)
feb11 0:7a1237bd2d13 330 {
feb11 2:473bac39ae7c 331 h7 = __rev(h7);
feb11 2:473bac39ae7c 332 memcpy(&digest[28], &h7, 4);
feb11 0:7a1237bd2d13 333 }
feb11 0:7a1237bd2d13 334 }