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@3:85c6ee25cf3e, 2013-09-11 (annotated)

Committer:
feb11
Date:
Wed Sep 11 17:22:40 2013 +0000
Revision:
3:85c6ee25cf3e
Parent:
0:7a1237bd2d13
Child:
4:0da19393bd57
improved speed of MD2, MD5, SHA-1 and SHA-2 (32bits)

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 K[] =
feb11 0:7a1237bd2d13 6 {
feb11 0:7a1237bd2d13 7 0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,
feb11 0:7a1237bd2d13 8 0x3956c25bf348b538, 0x59f111f1b605d019, 0x923f82a4af194f9b, 0xab1c5ed5da6d8118,
feb11 0:7a1237bd2d13 9 0xd807aa98a3030242, 0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
feb11 0:7a1237bd2d13 10 0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235, 0xc19bf174cf692694,
feb11 0:7a1237bd2d13 11 0xe49b69c19ef14ad2, 0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
feb11 0:7a1237bd2d13 12 0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,
feb11 0:7a1237bd2d13 13 0x983e5152ee66dfab, 0xa831c66d2db43210, 0xb00327c898fb213f, 0xbf597fc7beef0ee4,
feb11 0:7a1237bd2d13 14 0xc6e00bf33da88fc2, 0xd5a79147930aa725, 0x06ca6351e003826f, 0x142929670a0e6e70,
feb11 0:7a1237bd2d13 15 0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,
feb11 0:7a1237bd2d13 16 0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6, 0x92722c851482353b,
feb11 0:7a1237bd2d13 17 0xa2bfe8a14cf10364, 0xa81a664bbc423001, 0xc24b8b70d0f89791, 0xc76c51a30654be30,
feb11 0:7a1237bd2d13 18 0xd192e819d6ef5218, 0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8,
feb11 0:7a1237bd2d13 19 0x19a4c116b8d2d0c8, 0x1e376c085141ab53, 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,
feb11 0:7a1237bd2d13 20 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,
feb11 0:7a1237bd2d13 21 0x748f82ee5defb2fc, 0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec,
feb11 0:7a1237bd2d13 22 0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915, 0xc67178f2e372532b,
feb11 0:7a1237bd2d13 23 0xca273eceea26619c, 0xd186b8c721c0c207, 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,
feb11 0:7a1237bd2d13 24 0x06f067aa72176fba, 0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b,
feb11 0:7a1237bd2d13 25 0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,
feb11 0:7a1237bd2d13 26 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
feb11 0:7a1237bd2d13 27 };
feb11 0:7a1237bd2d13 28
feb11 0:7a1237bd2d13 29 static const uint64_t H[] =
feb11 0:7a1237bd2d13 30 {
feb11 0:7a1237bd2d13 31 // SHA-384
feb11 0:7a1237bd2d13 32 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939,
feb11 0:7a1237bd2d13 33 0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4,
feb11 0:7a1237bd2d13 34
feb11 0:7a1237bd2d13 35 // SHA-512
feb11 0:7a1237bd2d13 36 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
feb11 0:7a1237bd2d13 37 0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
feb11 0:7a1237bd2d13 38 };
feb11 0:7a1237bd2d13 39
feb11 0:7a1237bd2d13 40 static uint64_t revWord(uint64_t w)
feb11 0:7a1237bd2d13 41 {
feb11 3:85c6ee25cf3e 42 return (w >> 56)
feb11 3:85c6ee25cf3e 43 | ((w & 0x00FF000000000000) >> 40)
feb11 3:85c6ee25cf3e 44 | ((w & 0x0000FF0000000000) >> 24)
feb11 3:85c6ee25cf3e 45 | ((w & 0x000000FF00000000) >> 8)
feb11 3:85c6ee25cf3e 46 | ((w & 0x00000000FF000000) << 8)
feb11 3:85c6ee25cf3e 47 | ((w & 0x0000000000FF0000) << 24)
feb11 3:85c6ee25cf3e 48 | ((w & 0x000000000000FF00) << 40)
feb11 3:85c6ee25cf3e 49 | ((w & 0x00000000000000FF) << 56);
feb11 0:7a1237bd2d13 50 }
feb11 0:7a1237bd2d13 51
feb11 3:85c6ee25cf3e 52 #define ROTL(W,N) (((W) << (N)) | ((W) >> (64-(N))))
feb11 3:85c6ee25cf3e 53 #define ROTR(W,N) (((W) >> (N)) | ((W) << (64-(N))))
feb11 3:85c6ee25cf3e 54 #define CH(X,Y,Z) (((X) & (Y)) ^ ((~(X)) & (Z)))
feb11 3:85c6ee25cf3e 55 #define MAJ(X,Y,Z) (((X) & (Y)) ^ ((X) & (Z)) ^ ((Y) & (Z)))
feb11 3:85c6ee25cf3e 56 #define BSIG0(X) (ROTR(X,28) ^ ROTR(X,34) ^ ROTR(X,39))
feb11 3:85c6ee25cf3e 57 #define BSIG1(X) (ROTR(X,14) ^ ROTR(X,18) ^ ROTR(X,41))
feb11 3:85c6ee25cf3e 58 #define SSIG0(X) (ROTR((X),1) ^ ROTR((X),8) ^ ((X) >> 7))
feb11 3:85c6ee25cf3e 59 #define SSIG1(X) (ROTR((X),19) ^ ROTR((X),61) ^ ((X) >> 6))
feb11 0:7a1237bd2d13 60
feb11 3:85c6ee25cf3e 61
feb11 0:7a1237bd2d13 62
feb11 0:7a1237bd2d13 63 SHA2_64::SHA2_64(SHA2_64_TYPE t):
feb11 0:7a1237bd2d13 64 type(t),
feb11 0:7a1237bd2d13 65 totalBufferLength(0),
feb11 0:7a1237bd2d13 66 bufferLength(0)
feb11 0:7a1237bd2d13 67 {
feb11 0:7a1237bd2d13 68 switch(type)
feb11 0:7a1237bd2d13 69 {
feb11 0:7a1237bd2d13 70 case SHA_384:
feb11 0:7a1237bd2d13 71 h0 = H[0];
feb11 0:7a1237bd2d13 72 h1 = H[1];
feb11 0:7a1237bd2d13 73 h2 = H[2];
feb11 0:7a1237bd2d13 74 h3 = H[3];
feb11 0:7a1237bd2d13 75 h4 = H[4];
feb11 0:7a1237bd2d13 76 h5 = H[5];
feb11 0:7a1237bd2d13 77 h6 = H[6];
feb11 0:7a1237bd2d13 78 h7 = H[7];
feb11 0:7a1237bd2d13 79 break;
feb11 0:7a1237bd2d13 80
feb11 0:7a1237bd2d13 81 case SHA_512:
feb11 0:7a1237bd2d13 82 h0 = H[8];
feb11 0:7a1237bd2d13 83 h1 = H[9];
feb11 0:7a1237bd2d13 84 h2 = H[10];
feb11 0:7a1237bd2d13 85 h3 = H[11];
feb11 0:7a1237bd2d13 86 h4 = H[12];
feb11 0:7a1237bd2d13 87 h5 = H[13];
feb11 0:7a1237bd2d13 88 h6 = H[14];
feb11 0:7a1237bd2d13 89 h7 = H[15];
feb11 0:7a1237bd2d13 90 break;
feb11 0:7a1237bd2d13 91 }
feb11 0:7a1237bd2d13 92 }
feb11 0:7a1237bd2d13 93
feb11 0:7a1237bd2d13 94 void SHA2_64::add(uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 95 {
feb11 0:7a1237bd2d13 96 if(length < 128-bufferLength)
feb11 0:7a1237bd2d13 97 {
feb11 0:7a1237bd2d13 98 memcpy(&buffer[bufferLength], in, length);
feb11 0:7a1237bd2d13 99 bufferLength += length;
feb11 0:7a1237bd2d13 100 totalBufferLength += length;
feb11 0:7a1237bd2d13 101 return;
feb11 0:7a1237bd2d13 102 }
feb11 0:7a1237bd2d13 103 int offset = 128-bufferLength;
feb11 0:7a1237bd2d13 104 memcpy(&buffer[bufferLength], in, offset);
feb11 0:7a1237bd2d13 105 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 106 while(length-offset > 128)
feb11 0:7a1237bd2d13 107 {
feb11 0:7a1237bd2d13 108 memcpy(buffer, &in[offset], 128);
feb11 0:7a1237bd2d13 109 computeBlock(&h0,&h1,&h2,&h3,&h4,&h5,&h6,&h7,buffer);
feb11 0:7a1237bd2d13 110 offset += 128;
feb11 0:7a1237bd2d13 111 }
feb11 0:7a1237bd2d13 112 if(offset > length)
feb11 0:7a1237bd2d13 113 offset -= 128;
feb11 0:7a1237bd2d13 114 bufferLength = length - offset;
feb11 0:7a1237bd2d13 115 memcpy(buffer, &in[offset], bufferLength);
feb11 0:7a1237bd2d13 116 totalBufferLength += length;
feb11 0:7a1237bd2d13 117 }
feb11 0:7a1237bd2d13 118
feb11 0:7a1237bd2d13 119 void SHA2_64::computeDigest(uint8_t *digest)
feb11 0:7a1237bd2d13 120 {
feb11 0:7a1237bd2d13 121 uint16_t padding;
feb11 0:7a1237bd2d13 122 if(totalBufferLength % 128 < 112)
feb11 0:7a1237bd2d13 123 padding = 112 - (totalBufferLength % 128);
feb11 0:7a1237bd2d13 124 else
feb11 0:7a1237bd2d13 125 padding = 112 + (128 - (totalBufferLength % 128));
feb11 0:7a1237bd2d13 126 uint8_t val = 0x80;
feb11 0:7a1237bd2d13 127 add(&val, 1);
feb11 0:7a1237bd2d13 128 val = 0;
feb11 0:7a1237bd2d13 129 for(int i = 0; i < padding-1; ++i)
feb11 0:7a1237bd2d13 130 add(&val,1);
feb11 0:7a1237bd2d13 131 totalBufferLength -= padding;
feb11 0:7a1237bd2d13 132 uint64_t lengthBit = 0;
feb11 0:7a1237bd2d13 133 add((uint8_t*)&lengthBit, 8);
feb11 0:7a1237bd2d13 134 lengthBit = (totalBufferLength - 8) * 8;
feb11 0:7a1237bd2d13 135 lengthBit = revWord(lengthBit);
feb11 0:7a1237bd2d13 136 add((uint8_t*)&lengthBit, 8);
feb11 0:7a1237bd2d13 137
feb11 0:7a1237bd2d13 138 h0 = revWord(h0);
feb11 0:7a1237bd2d13 139 h1 = revWord(h1);
feb11 0:7a1237bd2d13 140 h2 = revWord(h2);
feb11 0:7a1237bd2d13 141 h3 = revWord(h3);
feb11 0:7a1237bd2d13 142 h4 = revWord(h4);
feb11 0:7a1237bd2d13 143 h5 = revWord(h5);
feb11 0:7a1237bd2d13 144
feb11 0:7a1237bd2d13 145
feb11 0:7a1237bd2d13 146 memcpy(digest, &h0, 8);
feb11 0:7a1237bd2d13 147 memcpy(&digest[8], &h1, 8);
feb11 0:7a1237bd2d13 148 memcpy(&digest[16], &h2, 8);
feb11 0:7a1237bd2d13 149 memcpy(&digest[24], &h3, 8);
feb11 0:7a1237bd2d13 150 memcpy(&digest[32], &h4, 8);
feb11 0:7a1237bd2d13 151 memcpy(&digest[40], &h5, 8);
feb11 0:7a1237bd2d13 152
feb11 0:7a1237bd2d13 153 if(type == SHA_512)
feb11 0:7a1237bd2d13 154 {
feb11 0:7a1237bd2d13 155 h6 = revWord(h6);
feb11 0:7a1237bd2d13 156 h7 = revWord(h7);
feb11 0:7a1237bd2d13 157 memcpy(&digest[48], &h6, 8);
feb11 0:7a1237bd2d13 158 memcpy(&digest[56], &h7, 8);
feb11 0:7a1237bd2d13 159 }
feb11 0:7a1237bd2d13 160
feb11 0:7a1237bd2d13 161 // reset state
feb11 0:7a1237bd2d13 162 switch(type)
feb11 0:7a1237bd2d13 163 {
feb11 0:7a1237bd2d13 164 case SHA_384:
feb11 0:7a1237bd2d13 165 h0 = H[0];
feb11 0:7a1237bd2d13 166 h1 = H[1];
feb11 0:7a1237bd2d13 167 h2 = H[2];
feb11 0:7a1237bd2d13 168 h3 = H[3];
feb11 0:7a1237bd2d13 169 h4 = H[4];
feb11 0:7a1237bd2d13 170 h5 = H[5];
feb11 0:7a1237bd2d13 171 h6 = H[6];
feb11 0:7a1237bd2d13 172 h7 = H[7];
feb11 0:7a1237bd2d13 173 break;
feb11 0:7a1237bd2d13 174
feb11 0:7a1237bd2d13 175 case SHA_512:
feb11 0:7a1237bd2d13 176 h0 = H[8];
feb11 0:7a1237bd2d13 177 h1 = H[9];
feb11 0:7a1237bd2d13 178 h2 = H[10];
feb11 0:7a1237bd2d13 179 h3 = H[11];
feb11 0:7a1237bd2d13 180 h4 = H[12];
feb11 0:7a1237bd2d13 181 h5 = H[13];
feb11 0:7a1237bd2d13 182 h6 = H[14];
feb11 0:7a1237bd2d13 183 h7 = H[15];
feb11 0:7a1237bd2d13 184 break;
feb11 0:7a1237bd2d13 185 }
feb11 0:7a1237bd2d13 186 totalBufferLength = 0;
feb11 0:7a1237bd2d13 187 bufferLength = 0;
feb11 0:7a1237bd2d13 188 }
feb11 0:7a1237bd2d13 189
feb11 0:7a1237bd2d13 190 void SHA2_64::computeBlock(uint64_t *h02,
feb11 0:7a1237bd2d13 191 uint64_t *h12,
feb11 0:7a1237bd2d13 192 uint64_t *h22,
feb11 0:7a1237bd2d13 193 uint64_t *h32,
feb11 0:7a1237bd2d13 194 uint64_t *h42,
feb11 0:7a1237bd2d13 195 uint64_t *h52,
feb11 0:7a1237bd2d13 196 uint64_t *h62,
feb11 0:7a1237bd2d13 197 uint64_t *h72,
feb11 0:7a1237bd2d13 198 uint8_t *buffer)
feb11 0:7a1237bd2d13 199 {
feb11 0:7a1237bd2d13 200 uint64_t w[80];
feb11 0:7a1237bd2d13 201 for(int t = 0; t < 16; ++t)
feb11 0:7a1237bd2d13 202 {
feb11 0:7a1237bd2d13 203 memcpy(&w[t], &buffer[t*8], 8);
feb11 0:7a1237bd2d13 204 w[t] = revWord(w[t]);
feb11 0:7a1237bd2d13 205 }
feb11 0:7a1237bd2d13 206 for(int t = 16; t < 80; ++t)
feb11 0:7a1237bd2d13 207 w[t] = SSIG1(w[t-2]) + w[t-7] + SSIG0(w[t-15]) + w[t-16];
feb11 0:7a1237bd2d13 208
feb11 0:7a1237bd2d13 209 uint64_t a = *h02, b = *h12, c = *h22, d = *h32, e = *h42, f = *h52, g = *h62, h = *h72;
feb11 0:7a1237bd2d13 210 for(int t = 0; t < 80; ++t)
feb11 0:7a1237bd2d13 211 {
feb11 0:7a1237bd2d13 212 uint64_t T1 = h + BSIG1(e) + CH(e,f,g) + K[t] + w[t];
feb11 0:7a1237bd2d13 213 uint64_t T2 = BSIG0(a) + MAJ(a,b,c);
feb11 0:7a1237bd2d13 214 h = g;
feb11 0:7a1237bd2d13 215 g = f;
feb11 0:7a1237bd2d13 216 f = e;
feb11 0:7a1237bd2d13 217 e = d + T1;
feb11 0:7a1237bd2d13 218 d = c;
feb11 0:7a1237bd2d13 219 c = b;
feb11 0:7a1237bd2d13 220 b = a;
feb11 0:7a1237bd2d13 221 a = T1 + T2;
feb11 0:7a1237bd2d13 222 }
feb11 0:7a1237bd2d13 223 *h02 += a;
feb11 0:7a1237bd2d13 224 *h12 += b;
feb11 0:7a1237bd2d13 225 *h22 += c;
feb11 0:7a1237bd2d13 226 *h32 += d;
feb11 0:7a1237bd2d13 227 *h42 += e;
feb11 0:7a1237bd2d13 228 *h52 += f;
feb11 0:7a1237bd2d13 229 *h62 += g;
feb11 0:7a1237bd2d13 230 *h72 += h;
feb11 0:7a1237bd2d13 231 }
feb11 0:7a1237bd2d13 232
feb11 0:7a1237bd2d13 233 void SHA2_64::computeDigest(SHA2_64_TYPE type, uint8_t *digest, uint8_t *in, uint32_t length)
feb11 0:7a1237bd2d13 234 {
feb11 3:85c6ee25cf3e 235 uint64_t lengthBit = length * 8;
feb11 0:7a1237bd2d13 236 uint64_t h0 = H[type*8], h1 = H[type*8+1], h2 = H[type*8+2], h3 = H[type*8+3];
feb11 0:7a1237bd2d13 237 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 238
feb11 3:85c6ee25cf3e 239 int padding;
feb11 0:7a1237bd2d13 240 if(length % 128 < 112)
feb11 0:7a1237bd2d13 241 padding = 112 - (length % 128);
feb11 0:7a1237bd2d13 242 else
feb11 0:7a1237bd2d13 243 padding = 112 + (128 - (length % 128));
feb11 3:85c6ee25cf3e 244
feb11 3:85c6ee25cf3e 245 while(length >= 128)
feb11 0:7a1237bd2d13 246 {
feb11 3:85c6ee25cf3e 247 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, in);
feb11 3:85c6ee25cf3e 248 in += 128;
feb11 3:85c6ee25cf3e 249 length -= 128;
feb11 0:7a1237bd2d13 250 }
feb11 3:85c6ee25cf3e 251 uint8_t buffer[128];
feb11 3:85c6ee25cf3e 252 memcpy(buffer, in,length);
feb11 3:85c6ee25cf3e 253 buffer[length] = 0x80;
feb11 3:85c6ee25cf3e 254 length++;
feb11 3:85c6ee25cf3e 255 padding--;
feb11 3:85c6ee25cf3e 256
feb11 3:85c6ee25cf3e 257 if(padding+length == 112)
feb11 3:85c6ee25cf3e 258 memset(&buffer[length], 0, padding);
feb11 3:85c6ee25cf3e 259 else
feb11 3:85c6ee25cf3e 260 {
feb11 3:85c6ee25cf3e 261 memset(&buffer[length], 0, 128-length);
feb11 3:85c6ee25cf3e 262 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 3:85c6ee25cf3e 263 memset(buffer, 0, length);
feb11 3:85c6ee25cf3e 264 }
feb11 3:85c6ee25cf3e 265
feb11 0:7a1237bd2d13 266 lengthBit = revWord(lengthBit);
feb11 0:7a1237bd2d13 267 memset(&buffer[112], 0, 8);
feb11 0:7a1237bd2d13 268 memcpy(&buffer[120], &lengthBit, 8);
feb11 0:7a1237bd2d13 269 computeBlock(&h0, &h1, &h2, &h3, &h4, &h5, &h6, &h7, buffer);
feb11 0:7a1237bd2d13 270
feb11 0:7a1237bd2d13 271 h0 = revWord(h0);
feb11 0:7a1237bd2d13 272 h1 = revWord(h1);
feb11 0:7a1237bd2d13 273 h2 = revWord(h2);
feb11 0:7a1237bd2d13 274 h3 = revWord(h3);
feb11 0:7a1237bd2d13 275 h4 = revWord(h4);
feb11 0:7a1237bd2d13 276 h5 = revWord(h5);
feb11 0:7a1237bd2d13 277
feb11 0:7a1237bd2d13 278
feb11 0:7a1237bd2d13 279 memcpy(digest, &h0, 8);
feb11 0:7a1237bd2d13 280 memcpy(&digest[8], &h1, 8);
feb11 0:7a1237bd2d13 281 memcpy(&digest[16], &h2, 8);
feb11 0:7a1237bd2d13 282 memcpy(&digest[24], &h3, 8);
feb11 0:7a1237bd2d13 283 memcpy(&digest[32], &h4, 8);
feb11 0:7a1237bd2d13 284 memcpy(&digest[40], &h5, 8);
feb11 0:7a1237bd2d13 285
feb11 0:7a1237bd2d13 286 if(type == SHA_512)
feb11 0:7a1237bd2d13 287 {
feb11 0:7a1237bd2d13 288 h6 = revWord(h6);
feb11 0:7a1237bd2d13 289 h7 = revWord(h7);
feb11 0:7a1237bd2d13 290 memcpy(&digest[48], &h6, 8);
feb11 0:7a1237bd2d13 291 memcpy(&digest[56], &h7, 8);
feb11 0:7a1237bd2d13 292 }
feb11 0:7a1237bd2d13 293 }
feb11 0:7a1237bd2d13 294