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_64.cpp@4:0da19393bd57, 2013-09-12 (annotated)

Committer:
feb11
Date:
Thu Sep 12 10:18:57 2013 +0000
Revision:
4:0da19393bd57
Parent:
3:85c6ee25cf3e
Child:
5:06cd9c8afa0b
improved performance of SHA-2 (32 & 64bits)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
feb11 0:7a1237bd2d13 1 #include "SHA2_64.h"
feb11 0:7a1237bd2d13 2 #include <string.h>
feb11 0:7a1237bd2d13 3
feb11 0:7a1237bd2d13 4
feb11 0:7a1237bd2d13 5 static const uint64_t H[] =
feb11 0:7a1237bd2d13 6 {
feb11 0:7a1237bd2d13 7 // SHA-384
feb11 0:7a1237bd2d13 8 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939,
feb11 0:7a1237bd2d13 9 0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4,
feb11 0:7a1237bd2d13 10
feb11 0:7a1237bd2d13 11 // SHA-512
feb11 0:7a1237bd2d13 12 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
feb11 0:7a1237bd2d13 13 0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
feb11 0:7a1237bd2d13 14 };
feb11 0:7a1237bd2d13 15
feb11 0:7a1237bd2d13 16 static uint64_t revWord(uint64_t w)
feb11 0:7a1237bd2d13 17 {
feb11 4:0da19393bd57 18 return __rev((w & 0xFFFFFFFF00000000) >> 32)
feb11 4:0da19393bd57 19 | ((uint64_t)(__rev(w & 0x00000000FFFFFFFF)) << 32);
feb11 0:7a1237bd2d13 20 }
feb11 0:7a1237bd2d13 21
feb11 3:85c6ee25cf3e 22 #define ROTL(W,N) (((W) << (N)) | ((W) >> (64-(N))))
feb11 3:85c6ee25cf3e 23 #define ROTR(W,N) (((W) >> (N)) | ((W) << (64-(N))))
feb11 3:85c6ee25cf3e 24 #define CH(X,Y,Z) (((X) & (Y)) ^ ((~(X)) & (Z)))
feb11 3:85c6ee25cf3e 25 #define MAJ(X,Y,Z) (((X) & (Y)) ^ ((X) & (Z)) ^ ((Y) & (Z)))
feb11 3:85c6ee25cf3e 26 #define BSIG0(X) (ROTR(X,28) ^ ROTR(X,34) ^ ROTR(X,39))
feb11 3:85c6ee25cf3e 27 #define BSIG1(X) (ROTR(X,14) ^ ROTR(X,18) ^ ROTR(X,41))
feb11 3:85c6ee25cf3e 28 #define SSIG0(X) (ROTR((X),1) ^ ROTR((X),8) ^ ((X) >> 7))
feb11 3:85c6ee25cf3e 29 #define SSIG1(X) (ROTR((X),19) ^ ROTR((X),61) ^ ((X) >> 6))
feb11 0:7a1237bd2d13 30
feb11 4:0da19393bd57 31 #define R(A,B,C,D,E,F,G,H,K,T) T1 = H + BSIG1(E) + CH(E,F,G) + K + w[T]; \
feb11 4:0da19393bd57 32 T2 = BSIG0(A) + MAJ(A,B,C); \
feb11 4:0da19393bd57 33 D += T1; \
feb11 4:0da19393bd57 34 H = T1 + T2;
feb11 4:0da19393bd57 35
feb11 0:7a1237bd2d13 36
feb11 0:7a1237bd2d13 37 SHA2_64::SHA2_64(SHA2_64_TYPE t):
feb11 0:7a1237bd2d13 38 type(t),
feb11 0:7a1237bd2d13 39 totalBufferLength(0),
feb11 0:7a1237bd2d13 40 bufferLength(0)
feb11 0:7a1237bd2d13 41 {
feb11 0:7a1237bd2d13 42 switch(type)
feb11 0:7a1237bd2d13 43 {
feb11 0:7a1237bd2d13 44 case SHA_384:
feb11 0:7a1237bd2d13 45 h0 = H[0];
feb11 0:7a1237bd2d13 46 h1 = H[1];
feb11 0:7a1237bd2d13 47 h2 = H[2];
feb11 0:7a1237bd2d13 48 h3 = H[3];
feb11 0:7a1237bd2d13 49 h4 = H[4];
feb11 0:7a1237bd2d13 50 h5 = H[5];
feb11 0:7a1237bd2d13 51 h6 = H[6];
feb11 0:7a1237bd2d13 52 h7 = H[7];
feb11 0:7a1237bd2d13 53 break;
feb11 0:7a1237bd2d13 54
feb11 0:7a1237bd2d13 55 case SHA_512:
feb11 0:7a1237bd2d13 56 h0 = H[8];
feb11 0:7a1237bd2d13 57 h1 = H[9];
feb11 0:7a1237bd2d13 58 h2 = H[10];
feb11 0:7a1237bd2d13 59 h3 = H[11];
feb11 0:7a1237bd2d13 60 h4 = H[12];
feb11 0:7a1237bd2d13 61 h5 = H[13];
feb11 0:7a1237bd2d13 62 h6 = H[14];
feb11 0:7a1237bd2d13 63 h7 = H[15];
feb11 0:7a1237bd2d13 64 break;
feb11 0:7a1237bd2d13 65 }
feb11 0:7a1237bd2d13 66 }
feb11 0:7a1237bd2d13 67
feb11 0:7a1237bd2d13 68 void SHA2_64::add(uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 69 {
feb11 0:7a1237bd2d13 70 if(length < 128-bufferLength)
feb11 0:7a1237bd2d13 71 {
feb11 0:7a1237bd2d13 72 memcpy(&buffer[bufferLength], in, length);
feb11 0:7a1237bd2d13 73 bufferLength += length;
feb11 0:7a1237bd2d13 74 totalBufferLength += length;
feb11 0:7a1237bd2d13 75 return;
feb11 0:7a1237bd2d13 76 }
feb11 0:7a1237bd2d13 77 int offset = 128-bufferLength;
feb11 0:7a1237bd2d13 78 memcpy(&buffer[bufferLength], in, offset);
feb11 0:7a1237bd2d13 79 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 80 while(length-offset > 128)
feb11 0:7a1237bd2d13 81 {
feb11 0:7a1237bd2d13 82 memcpy(buffer, &in[offset], 128);
feb11 0:7a1237bd2d13 83 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 84 offset += 128;
feb11 0:7a1237bd2d13 85 }
feb11 0:7a1237bd2d13 86 if(offset > length)
feb11 0:7a1237bd2d13 87 offset -= 128;
feb11 0:7a1237bd2d13 88 bufferLength = length - offset;
feb11 0:7a1237bd2d13 89 memcpy(buffer, &in[offset], bufferLength);
feb11 0:7a1237bd2d13 90 totalBufferLength += length;
feb11 0:7a1237bd2d13 91 }
feb11 0:7a1237bd2d13 92
feb11 0:7a1237bd2d13 93 void SHA2_64::computeDigest(uint8_t *digest)
feb11 0:7a1237bd2d13 94 {
feb11 0:7a1237bd2d13 95 uint16_t padding;
feb11 0:7a1237bd2d13 96 if(totalBufferLength % 128 < 112)
feb11 0:7a1237bd2d13 97 padding = 112 - (totalBufferLength % 128);
feb11 0:7a1237bd2d13 98 else
feb11 0:7a1237bd2d13 99 padding = 112 + (128 - (totalBufferLength % 128));
feb11 0:7a1237bd2d13 100 uint8_t val = 0x80;
feb11 0:7a1237bd2d13 101 add(&val, 1);
feb11 0:7a1237bd2d13 102 val = 0;
feb11 0:7a1237bd2d13 103 for(int i = 0; i < padding-1; ++i)
feb11 0:7a1237bd2d13 104 add(&val,1);
feb11 0:7a1237bd2d13 105 totalBufferLength -= padding;
feb11 0:7a1237bd2d13 106 uint64_t lengthBit = 0;
feb11 0:7a1237bd2d13 107 add((uint8_t*)&lengthBit, 8);
feb11 0:7a1237bd2d13 108 lengthBit = (totalBufferLength - 8) * 8;
feb11 0:7a1237bd2d13 109 lengthBit = revWord(lengthBit);
feb11 0:7a1237bd2d13 110 add((uint8_t*)&lengthBit, 8);
feb11 0:7a1237bd2d13 111
feb11 0:7a1237bd2d13 112 h0 = revWord(h0);
feb11 0:7a1237bd2d13 113 h1 = revWord(h1);
feb11 0:7a1237bd2d13 114 h2 = revWord(h2);
feb11 0:7a1237bd2d13 115 h3 = revWord(h3);
feb11 0:7a1237bd2d13 116 h4 = revWord(h4);
feb11 0:7a1237bd2d13 117 h5 = revWord(h5);
feb11 0:7a1237bd2d13 118
feb11 0:7a1237bd2d13 119
feb11 0:7a1237bd2d13 120 memcpy(digest, &h0, 8);
feb11 0:7a1237bd2d13 121 memcpy(&digest[8], &h1, 8);
feb11 0:7a1237bd2d13 122 memcpy(&digest[16], &h2, 8);
feb11 0:7a1237bd2d13 123 memcpy(&digest[24], &h3, 8);
feb11 0:7a1237bd2d13 124 memcpy(&digest[32], &h4, 8);
feb11 0:7a1237bd2d13 125 memcpy(&digest[40], &h5, 8);
feb11 0:7a1237bd2d13 126
feb11 0:7a1237bd2d13 127 if(type == SHA_512)
feb11 0:7a1237bd2d13 128 {
feb11 0:7a1237bd2d13 129 h6 = revWord(h6);
feb11 0:7a1237bd2d13 130 h7 = revWord(h7);
feb11 0:7a1237bd2d13 131 memcpy(&digest[48], &h6, 8);
feb11 0:7a1237bd2d13 132 memcpy(&digest[56], &h7, 8);
feb11 0:7a1237bd2d13 133 }
feb11 0:7a1237bd2d13 134
feb11 0:7a1237bd2d13 135 // reset state
feb11 0:7a1237bd2d13 136 switch(type)
feb11 0:7a1237bd2d13 137 {
feb11 0:7a1237bd2d13 138 case SHA_384:
feb11 0:7a1237bd2d13 139 h0 = H[0];
feb11 0:7a1237bd2d13 140 h1 = H[1];
feb11 0:7a1237bd2d13 141 h2 = H[2];
feb11 0:7a1237bd2d13 142 h3 = H[3];
feb11 0:7a1237bd2d13 143 h4 = H[4];
feb11 0:7a1237bd2d13 144 h5 = H[5];
feb11 0:7a1237bd2d13 145 h6 = H[6];
feb11 0:7a1237bd2d13 146 h7 = H[7];
feb11 0:7a1237bd2d13 147 break;
feb11 0:7a1237bd2d13 148
feb11 0:7a1237bd2d13 149 case SHA_512:
feb11 0:7a1237bd2d13 150 h0 = H[8];
feb11 0:7a1237bd2d13 151 h1 = H[9];
feb11 0:7a1237bd2d13 152 h2 = H[10];
feb11 0:7a1237bd2d13 153 h3 = H[11];
feb11 0:7a1237bd2d13 154 h4 = H[12];
feb11 0:7a1237bd2d13 155 h5 = H[13];
feb11 0:7a1237bd2d13 156 h6 = H[14];
feb11 0:7a1237bd2d13 157 h7 = H[15];
feb11 0:7a1237bd2d13 158 break;
feb11 0:7a1237bd2d13 159 }
feb11 0:7a1237bd2d13 160 totalBufferLength = 0;
feb11 0:7a1237bd2d13 161 bufferLength = 0;
feb11 0:7a1237bd2d13 162 }
feb11 0:7a1237bd2d13 163
feb11 0:7a1237bd2d13 164 void SHA2_64::computeBlock(uint64_t *h02,
feb11 0:7a1237bd2d13 165 uint64_t *h12,
feb11 0:7a1237bd2d13 166 uint64_t *h22,
feb11 0:7a1237bd2d13 167 uint64_t *h32,
feb11 0:7a1237bd2d13 168 uint64_t *h42,
feb11 0:7a1237bd2d13 169 uint64_t *h52,
feb11 0:7a1237bd2d13 170 uint64_t *h62,
feb11 0:7a1237bd2d13 171 uint64_t *h72,
feb11 0:7a1237bd2d13 172 uint8_t *buffer)
feb11 0:7a1237bd2d13 173 {
feb11 0:7a1237bd2d13 174 uint64_t w[80];
feb11 4:0da19393bd57 175 uint64_t *buffer2 = (uint64_t*)buffer;
feb11 4:0da19393bd57 176
feb11 4:0da19393bd57 177 w[0] = revWord(buffer2[0]);
feb11 4:0da19393bd57 178 w[1] = revWord(buffer2[1]);
feb11 4:0da19393bd57 179 w[2] = revWord(buffer2[2]);
feb11 4:0da19393bd57 180 w[3] = revWord(buffer2[3]);
feb11 4:0da19393bd57 181 w[4] = revWord(buffer2[4]);
feb11 4:0da19393bd57 182 w[5] = revWord(buffer2[5]);
feb11 4:0da19393bd57 183 w[6] = revWord(buffer2[6]);
feb11 4:0da19393bd57 184 w[7] = revWord(buffer2[7]);
feb11 4:0da19393bd57 185 w[8] = revWord(buffer2[8]);
feb11 4:0da19393bd57 186 w[9] = revWord(buffer2[9]);
feb11 4:0da19393bd57 187 w[10] = revWord(buffer2[10]);
feb11 4:0da19393bd57 188 w[11] = revWord(buffer2[11]);
feb11 4:0da19393bd57 189 w[12] = revWord(buffer2[12]);
feb11 4:0da19393bd57 190 w[13] = revWord(buffer2[13]);
feb11 4:0da19393bd57 191 w[14] = revWord(buffer2[14]);
feb11 4:0da19393bd57 192 w[15] = revWord(buffer2[15]);
feb11 4:0da19393bd57 193
feb11 0:7a1237bd2d13 194 for(int t = 16; t < 80; ++t)
feb11 0:7a1237bd2d13 195 w[t] = SSIG1(w[t-2]) + w[t-7] + SSIG0(w[t-15]) + w[t-16];
feb11 0:7a1237bd2d13 196
feb11 0:7a1237bd2d13 197 uint64_t a = *h02, b = *h12, c = *h22, d = *h32, e = *h42, f = *h52, g = *h62, h = *h72;
feb11 4:0da19393bd57 198 uint64_t T1, T2;
feb11 4:0da19393bd57 199
feb11 4:0da19393bd57 200
feb11 4:0da19393bd57 201 R(a,b,c,d,e,f,g,h,0x428a2f98d728ae22,0)
feb11 4:0da19393bd57 202 R(h,a,b,c,d,e,f,g,0x7137449123ef65cd,1)
feb11 4:0da19393bd57 203 R(g,h,a,b,c,d,e,f,0xb5c0fbcfec4d3b2f,2)
feb11 4:0da19393bd57 204 R(f,g,h,a,b,c,d,e,0xe9b5dba58189dbbc,3)
feb11 4:0da19393bd57 205 R(e,f,g,h,a,b,c,d,0x3956c25bf348b538,4)
feb11 4:0da19393bd57 206 R(d,e,f,g,h,a,b,c,0x59f111f1b605d019,5)
feb11 4:0da19393bd57 207 R(c,d,e,f,g,h,a,b,0x923f82a4af194f9b,6)
feb11 4:0da19393bd57 208 R(b,c,d,e,f,g,h,a,0xab1c5ed5da6d8118,7)
feb11 4:0da19393bd57 209
feb11 4:0da19393bd57 210 R(a,b,c,d,e,f,g,h,0xd807aa98a3030242,8)
feb11 4:0da19393bd57 211 R(h,a,b,c,d,e,f,g,0x12835b0145706fbe,9)
feb11 4:0da19393bd57 212 R(g,h,a,b,c,d,e,f,0x243185be4ee4b28c,10)
feb11 4:0da19393bd57 213 R(f,g,h,a,b,c,d,e,0x550c7dc3d5ffb4e2,11)
feb11 4:0da19393bd57 214 R(e,f,g,h,a,b,c,d,0x72be5d74f27b896f,12)
feb11 4:0da19393bd57 215 R(d,e,f,g,h,a,b,c,0x80deb1fe3b1696b1,13)
feb11 4:0da19393bd57 216 R(c,d,e,f,g,h,a,b,0x9bdc06a725c71235,14)
feb11 4:0da19393bd57 217 R(b,c,d,e,f,g,h,a,0xc19bf174cf692694,15)
feb11 4:0da19393bd57 218
feb11 4:0da19393bd57 219
feb11 4:0da19393bd57 220 R(a,b,c,d,e,f,g,h,0xe49b69c19ef14ad2,16)
feb11 4:0da19393bd57 221 R(h,a,b,c,d,e,f,g,0xefbe4786384f25e3,17)
feb11 4:0da19393bd57 222 R(g,h,a,b,c,d,e,f,0x0fc19dc68b8cd5b5,18)
feb11 4:0da19393bd57 223 R(f,g,h,a,b,c,d,e,0x240ca1cc77ac9c65,19)
feb11 4:0da19393bd57 224 R(e,f,g,h,a,b,c,d,0x2de92c6f592b0275,20)
feb11 4:0da19393bd57 225 R(d,e,f,g,h,a,b,c,0x4a7484aa6ea6e483,21)
feb11 4:0da19393bd57 226 R(c,d,e,f,g,h,a,b,0x5cb0a9dcbd41fbd4,22)
feb11 4:0da19393bd57 227 R(b,c,d,e,f,g,h,a,0x76f988da831153b5,23)
feb11 4:0da19393bd57 228
feb11 4:0da19393bd57 229 R(a,b,c,d,e,f,g,h,0x983e5152ee66dfab,24)
feb11 4:0da19393bd57 230 R(h,a,b,c,d,e,f,g,0xa831c66d2db43210,25)
feb11 4:0da19393bd57 231 R(g,h,a,b,c,d,e,f,0xb00327c898fb213f,26)
feb11 4:0da19393bd57 232 R(f,g,h,a,b,c,d,e,0xbf597fc7beef0ee4,27)
feb11 4:0da19393bd57 233 R(e,f,g,h,a,b,c,d,0xc6e00bf33da88fc2,28)
feb11 4:0da19393bd57 234 R(d,e,f,g,h,a,b,c,0xd5a79147930aa725,29)
feb11 4:0da19393bd57 235 R(c,d,e,f,g,h,a,b,0x06ca6351e003826f,30)
feb11 4:0da19393bd57 236 R(b,c,d,e,f,g,h,a,0x142929670a0e6e70,31)
feb11 4:0da19393bd57 237
feb11 4:0da19393bd57 238
feb11 4:0da19393bd57 239 R(a,b,c,d,e,f,g,h,0x27b70a8546d22ffc,32)
feb11 4:0da19393bd57 240 R(h,a,b,c,d,e,f,g,0x2e1b21385c26c926,33)
feb11 4:0da19393bd57 241 R(g,h,a,b,c,d,e,f,0x4d2c6dfc5ac42aed,34)
feb11 4:0da19393bd57 242 R(f,g,h,a,b,c,d,e,0x53380d139d95b3df,35)
feb11 4:0da19393bd57 243 R(e,f,g,h,a,b,c,d,0x650a73548baf63de,36)
feb11 4:0da19393bd57 244 R(d,e,f,g,h,a,b,c,0x766a0abb3c77b2a8,37)
feb11 4:0da19393bd57 245 R(c,d,e,f,g,h,a,b,0x81c2c92e47edaee6,38)
feb11 4:0da19393bd57 246 R(b,c,d,e,f,g,h,a,0x92722c851482353b,39)
feb11 4:0da19393bd57 247
feb11 4:0da19393bd57 248 R(a,b,c,d,e,f,g,h,0xa2bfe8a14cf10364,40)
feb11 4:0da19393bd57 249 R(h,a,b,c,d,e,f,g,0xa81a664bbc423001,41)
feb11 4:0da19393bd57 250 R(g,h,a,b,c,d,e,f,0xc24b8b70d0f89791,42)
feb11 4:0da19393bd57 251 R(f,g,h,a,b,c,d,e,0xc76c51a30654be30,43)
feb11 4:0da19393bd57 252 R(e,f,g,h,a,b,c,d,0xd192e819d6ef5218,44)
feb11 4:0da19393bd57 253 R(d,e,f,g,h,a,b,c,0xd69906245565a910,45)
feb11 4:0da19393bd57 254 R(c,d,e,f,g,h,a,b,0xf40e35855771202a,46)
feb11 4:0da19393bd57 255 R(b,c,d,e,f,g,h,a,0x106aa07032bbd1b8,47)
feb11 4:0da19393bd57 256
feb11 4:0da19393bd57 257 R(a,b,c,d,e,f,g,h,0x19a4c116b8d2d0c8,48)
feb11 4:0da19393bd57 258 R(h,a,b,c,d,e,f,g,0x1e376c085141ab53,49)
feb11 4:0da19393bd57 259 R(g,h,a,b,c,d,e,f,0x2748774cdf8eeb99,50)
feb11 4:0da19393bd57 260 R(f,g,h,a,b,c,d,e,0x34b0bcb5e19b48a8,51)
feb11 4:0da19393bd57 261 R(e,f,g,h,a,b,c,d,0x391c0cb3c5c95a63,52)
feb11 4:0da19393bd57 262 R(d,e,f,g,h,a,b,c,0x4ed8aa4ae3418acb,53)
feb11 4:0da19393bd57 263 R(c,d,e,f,g,h,a,b,0x5b9cca4f7763e373,54)
feb11 4:0da19393bd57 264 R(b,c,d,e,f,g,h,a,0x682e6ff3d6b2b8a3,55)
feb11 4:0da19393bd57 265
feb11 4:0da19393bd57 266 R(a,b,c,d,e,f,g,h,0x748f82ee5defb2fc,56)
feb11 4:0da19393bd57 267 R(h,a,b,c,d,e,f,g,0x78a5636f43172f60,57)
feb11 4:0da19393bd57 268 R(g,h,a,b,c,d,e,f,0x84c87814a1f0ab72,58)
feb11 4:0da19393bd57 269 R(f,g,h,a,b,c,d,e,0x8cc702081a6439ec,59)
feb11 4:0da19393bd57 270 R(e,f,g,h,a,b,c,d,0x90befffa23631e28,60)
feb11 4:0da19393bd57 271 R(d,e,f,g,h,a,b,c,0xa4506cebde82bde9,61)
feb11 4:0da19393bd57 272 R(c,d,e,f,g,h,a,b,0xbef9a3f7b2c67915,62)
feb11 4:0da19393bd57 273 R(b,c,d,e,f,g,h,a,0xc67178f2e372532b,63)
feb11 4:0da19393bd57 274
feb11 4:0da19393bd57 275 R(a,b,c,d,e,f,g,h,0xca273eceea26619c,64)
feb11 4:0da19393bd57 276 R(h,a,b,c,d,e,f,g,0xd186b8c721c0c207,65)
feb11 4:0da19393bd57 277 R(g,h,a,b,c,d,e,f,0xeada7dd6cde0eb1e,66)
feb11 4:0da19393bd57 278 R(f,g,h,a,b,c,d,e,0xf57d4f7fee6ed178,67)
feb11 4:0da19393bd57 279 R(e,f,g,h,a,b,c,d,0x06f067aa72176fba,68)
feb11 4:0da19393bd57 280 R(d,e,f,g,h,a,b,c,0x0a637dc5a2c898a6,69)
feb11 4:0da19393bd57 281 R(c,d,e,f,g,h,a,b,0x113f9804bef90dae,70)
feb11 4:0da19393bd57 282 R(b,c,d,e,f,g,h,a,0x1b710b35131c471b,71)
feb11 4:0da19393bd57 283
feb11 4:0da19393bd57 284 R(a,b,c,d,e,f,g,h,0x28db77f523047d84,72)
feb11 4:0da19393bd57 285 R(h,a,b,c,d,e,f,g,0x32caab7b40c72493,73)
feb11 4:0da19393bd57 286 R(g,h,a,b,c,d,e,f,0x3c9ebe0a15c9bebc,74)
feb11 4:0da19393bd57 287 R(f,g,h,a,b,c,d,e,0x431d67c49c100d4c,75)
feb11 4:0da19393bd57 288 R(e,f,g,h,a,b,c,d,0x4cc5d4becb3e42b6,76)
feb11 4:0da19393bd57 289 R(d,e,f,g,h,a,b,c,0x597f299cfc657e2a,77)
feb11 4:0da19393bd57 290 R(c,d,e,f,g,h,a,b,0x5fcb6fab3ad6faec,78)
feb11 4:0da19393bd57 291 R(b,c,d,e,f,g,h,a,0x6c44198c4a475817,79)
feb11 4:0da19393bd57 292
feb11 0:7a1237bd2d13 293 *h02 += a;
feb11 0:7a1237bd2d13 294 *h12 += b;
feb11 0:7a1237bd2d13 295 *h22 += c;
feb11 0:7a1237bd2d13 296 *h32 += d;
feb11 0:7a1237bd2d13 297 *h42 += e;
feb11 0:7a1237bd2d13 298 *h52 += f;
feb11 0:7a1237bd2d13 299 *h62 += g;
feb11 0:7a1237bd2d13 300 *h72 += h;
feb11 0:7a1237bd2d13 301 }
feb11 0:7a1237bd2d13 302
feb11 0:7a1237bd2d13 303 void SHA2_64::computeDigest(SHA2_64_TYPE type, uint8_t *digest, uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 304 {
feb11 3:85c6ee25cf3e 305 uint64_t lengthBit = length * 8;
feb11 0:7a1237bd2d13 306 uint64_t h0 = H[type*8], h1 = H[type*8+1], h2 = H[type*8+2], h3 = H[type*8+3];
feb11 0:7a1237bd2d13 307 uint64_t h4 = H[type*8+4], h5 = H[type*8+5], h6 = H[type*8+6], h7 = H[type*8+7];
feb11 3:85c6ee25cf3e 308
feb11 3:85c6ee25cf3e 309 int padding;
feb11 0:7a1237bd2d13 310 if(length % 128 < 112)
feb11 0:7a1237bd2d13 311 padding = 112 - (length % 128);
feb11 0:7a1237bd2d13 312 else
feb11 0:7a1237bd2d13 313 padding = 112 + (128 - (length % 128));
feb11 3:85c6ee25cf3e 314
feb11 3:85c6ee25cf3e 315 while(length >= 128)
feb11 0:7a1237bd2d13 316 {
feb11 3:85c6ee25cf3e 317 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, in);
feb11 3:85c6ee25cf3e 318 in += 128;
feb11 3:85c6ee25cf3e 319 length -= 128;
feb11 0:7a1237bd2d13 320 }
feb11 3:85c6ee25cf3e 321 uint8_t buffer[128];
feb11 3:85c6ee25cf3e 322 memcpy(buffer, in,length);
feb11 3:85c6ee25cf3e 323 buffer[length] = 0x80;
feb11 3:85c6ee25cf3e 324 length++;
feb11 3:85c6ee25cf3e 325 padding--;
feb11 3:85c6ee25cf3e 326
feb11 3:85c6ee25cf3e 327 if(padding+length == 112)
feb11 3:85c6ee25cf3e 328 memset(&buffer[length], 0, padding);
feb11 3:85c6ee25cf3e 329 else
feb11 3:85c6ee25cf3e 330 {
feb11 3:85c6ee25cf3e 331 memset(&buffer[length], 0, 128-length);
feb11 3:85c6ee25cf3e 332 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 3:85c6ee25cf3e 333 memset(buffer, 0, length);
feb11 3:85c6ee25cf3e 334 }
feb11 3:85c6ee25cf3e 335
feb11 0:7a1237bd2d13 336 lengthBit = revWord(lengthBit);
feb11 0:7a1237bd2d13 337 memset(&buffer[112], 0, 8);
feb11 0:7a1237bd2d13 338 memcpy(&buffer[120], &lengthBit, 8);
feb11 0:7a1237bd2d13 339 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 0:7a1237bd2d13 340
feb11 0:7a1237bd2d13 341 h0 = revWord(h0);
feb11 0:7a1237bd2d13 342 h1 = revWord(h1);
feb11 0:7a1237bd2d13 343 h2 = revWord(h2);
feb11 0:7a1237bd2d13 344 h3 = revWord(h3);
feb11 0:7a1237bd2d13 345 h4 = revWord(h4);
feb11 0:7a1237bd2d13 346 h5 = revWord(h5);
feb11 0:7a1237bd2d13 347
feb11 0:7a1237bd2d13 348
feb11 0:7a1237bd2d13 349 memcpy(digest, &h0, 8);
feb11 0:7a1237bd2d13 350 memcpy(&digest[8], &h1, 8);
feb11 0:7a1237bd2d13 351 memcpy(&digest[16], &h2, 8);
feb11 0:7a1237bd2d13 352 memcpy(&digest[24], &h3, 8);
feb11 0:7a1237bd2d13 353 memcpy(&digest[32], &h4, 8);
feb11 0:7a1237bd2d13 354 memcpy(&digest[40], &h5, 8);
feb11 0:7a1237bd2d13 355
feb11 0:7a1237bd2d13 356 if(type == SHA_512)
feb11 0:7a1237bd2d13 357 {
feb11 0:7a1237bd2d13 358 h6 = revWord(h6);
feb11 0:7a1237bd2d13 359 h7 = revWord(h7);
feb11 0:7a1237bd2d13 360 memcpy(&digest[48], &h6, 8);
feb11 0:7a1237bd2d13 361 memcpy(&digest[56], &h7, 8);
feb11 0:7a1237bd2d13 362 }
feb11 0:7a1237bd2d13 363 }
feb11 0:7a1237bd2d13 364