Ashley Mills / cyassl-lib

This is a port of cyaSSL 2.7.0.

Dependents:   CyaSSL_DTLS_Cellular CyaSSL_DTLS_Ethernet

ctaocrypt/src/sha512.c@1:c0ce1562443a, 2013-09-05 (annotated)

Committer:
ashleymills
Date:
Thu Sep 05 15:55:50 2013 +0000
Revision:
1:c0ce1562443a
Parent:
0:714293de3836 
Nothing;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ashleymills 0:714293de3836 1 /* sha512.c
ashleymills 0:714293de3836 2 *
ashleymills 0:714293de3836 3 * Copyright (C) 2006-2013 wolfSSL Inc.
ashleymills 0:714293de3836 4 *
ashleymills 0:714293de3836 5 * This file is part of CyaSSL.
ashleymills 0:714293de3836 6 *
ashleymills 0:714293de3836 7 * CyaSSL is free software; you can redistribute it and/or modify
ashleymills 0:714293de3836 8 * it under the terms of the GNU General Public License as published by
ashleymills 0:714293de3836 9 * the Free Software Foundation; either version 2 of the License, or
ashleymills 0:714293de3836 10 * (at your option) any later version.
ashleymills 0:714293de3836 11 *
ashleymills 0:714293de3836 12 * CyaSSL is distributed in the hope that it will be useful,
ashleymills 0:714293de3836 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ashleymills 0:714293de3836 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
ashleymills 0:714293de3836 15 * GNU General Public License for more details.
ashleymills 0:714293de3836 16 *
ashleymills 0:714293de3836 17 * You should have received a copy of the GNU General Public License
ashleymills 0:714293de3836 18 * along with this program; if not, write to the Free Software
ashleymills 0:714293de3836 19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
ashleymills 0:714293de3836 20 */
ashleymills 0:714293de3836 21
ashleymills 0:714293de3836 22 #ifdef HAVE_CONFIG_H
ashleymills 0:714293de3836 23 #include <config.h>
ashleymills 0:714293de3836 24 #endif
ashleymills 0:714293de3836 25
ashleymills 0:714293de3836 26 #include <cyassl/ctaocrypt/settings.h>
ashleymills 0:714293de3836 27
ashleymills 0:714293de3836 28 #ifdef CYASSL_SHA512
ashleymills 0:714293de3836 29
ashleymills 0:714293de3836 30 #include <cyassl/ctaocrypt/sha512.h>
ashleymills 0:714293de3836 31 #ifdef NO_INLINE
ashleymills 0:714293de3836 32 #include <cyassl/ctaocrypt/misc.h>
ashleymills 0:714293de3836 33 #else
ashleymills 0:714293de3836 34 #include <ctaocrypt/src/misc.c>
ashleymills 0:714293de3836 35 #endif
ashleymills 0:714293de3836 36
ashleymills 0:714293de3836 37
ashleymills 0:714293de3836 38 #ifndef min
ashleymills 0:714293de3836 39
ashleymills 0:714293de3836 40 static INLINE word32 min(word32 a, word32 b)
ashleymills 0:714293de3836 41 {
ashleymills 0:714293de3836 42 return a > b ? b : a;
ashleymills 0:714293de3836 43 }
ashleymills 0:714293de3836 44
ashleymills 0:714293de3836 45 #endif /* min */
ashleymills 0:714293de3836 46
ashleymills 0:714293de3836 47
ashleymills 0:714293de3836 48 void InitSha512(Sha512* sha512)
ashleymills 0:714293de3836 49 {
ashleymills 0:714293de3836 50 sha512->digest[0] = W64LIT(0x6a09e667f3bcc908);
ashleymills 0:714293de3836 51 sha512->digest[1] = W64LIT(0xbb67ae8584caa73b);
ashleymills 0:714293de3836 52 sha512->digest[2] = W64LIT(0x3c6ef372fe94f82b);
ashleymills 0:714293de3836 53 sha512->digest[3] = W64LIT(0xa54ff53a5f1d36f1);
ashleymills 0:714293de3836 54 sha512->digest[4] = W64LIT(0x510e527fade682d1);
ashleymills 0:714293de3836 55 sha512->digest[5] = W64LIT(0x9b05688c2b3e6c1f);
ashleymills 0:714293de3836 56 sha512->digest[6] = W64LIT(0x1f83d9abfb41bd6b);
ashleymills 0:714293de3836 57 sha512->digest[7] = W64LIT(0x5be0cd19137e2179);
ashleymills 0:714293de3836 58
ashleymills 0:714293de3836 59 sha512->buffLen = 0;
ashleymills 0:714293de3836 60 sha512->loLen = 0;
ashleymills 0:714293de3836 61 sha512->hiLen = 0;
ashleymills 0:714293de3836 62 }
ashleymills 0:714293de3836 63
ashleymills 0:714293de3836 64
ashleymills 0:714293de3836 65 static const word64 K512[80] = {
ashleymills 0:714293de3836 66 W64LIT(0x428a2f98d728ae22), W64LIT(0x7137449123ef65cd),
ashleymills 0:714293de3836 67 W64LIT(0xb5c0fbcfec4d3b2f), W64LIT(0xe9b5dba58189dbbc),
ashleymills 0:714293de3836 68 W64LIT(0x3956c25bf348b538), W64LIT(0x59f111f1b605d019),
ashleymills 0:714293de3836 69 W64LIT(0x923f82a4af194f9b), W64LIT(0xab1c5ed5da6d8118),
ashleymills 0:714293de3836 70 W64LIT(0xd807aa98a3030242), W64LIT(0x12835b0145706fbe),
ashleymills 0:714293de3836 71 W64LIT(0x243185be4ee4b28c), W64LIT(0x550c7dc3d5ffb4e2),
ashleymills 0:714293de3836 72 W64LIT(0x72be5d74f27b896f), W64LIT(0x80deb1fe3b1696b1),
ashleymills 0:714293de3836 73 W64LIT(0x9bdc06a725c71235), W64LIT(0xc19bf174cf692694),
ashleymills 0:714293de3836 74 W64LIT(0xe49b69c19ef14ad2), W64LIT(0xefbe4786384f25e3),
ashleymills 0:714293de3836 75 W64LIT(0x0fc19dc68b8cd5b5), W64LIT(0x240ca1cc77ac9c65),
ashleymills 0:714293de3836 76 W64LIT(0x2de92c6f592b0275), W64LIT(0x4a7484aa6ea6e483),
ashleymills 0:714293de3836 77 W64LIT(0x5cb0a9dcbd41fbd4), W64LIT(0x76f988da831153b5),
ashleymills 0:714293de3836 78 W64LIT(0x983e5152ee66dfab), W64LIT(0xa831c66d2db43210),
ashleymills 0:714293de3836 79 W64LIT(0xb00327c898fb213f), W64LIT(0xbf597fc7beef0ee4),
ashleymills 0:714293de3836 80 W64LIT(0xc6e00bf33da88fc2), W64LIT(0xd5a79147930aa725),
ashleymills 0:714293de3836 81 W64LIT(0x06ca6351e003826f), W64LIT(0x142929670a0e6e70),
ashleymills 0:714293de3836 82 W64LIT(0x27b70a8546d22ffc), W64LIT(0x2e1b21385c26c926),
ashleymills 0:714293de3836 83 W64LIT(0x4d2c6dfc5ac42aed), W64LIT(0x53380d139d95b3df),
ashleymills 0:714293de3836 84 W64LIT(0x650a73548baf63de), W64LIT(0x766a0abb3c77b2a8),
ashleymills 0:714293de3836 85 W64LIT(0x81c2c92e47edaee6), W64LIT(0x92722c851482353b),
ashleymills 0:714293de3836 86 W64LIT(0xa2bfe8a14cf10364), W64LIT(0xa81a664bbc423001),
ashleymills 0:714293de3836 87 W64LIT(0xc24b8b70d0f89791), W64LIT(0xc76c51a30654be30),
ashleymills 0:714293de3836 88 W64LIT(0xd192e819d6ef5218), W64LIT(0xd69906245565a910),
ashleymills 0:714293de3836 89 W64LIT(0xf40e35855771202a), W64LIT(0x106aa07032bbd1b8),
ashleymills 0:714293de3836 90 W64LIT(0x19a4c116b8d2d0c8), W64LIT(0x1e376c085141ab53),
ashleymills 0:714293de3836 91 W64LIT(0x2748774cdf8eeb99), W64LIT(0x34b0bcb5e19b48a8),
ashleymills 0:714293de3836 92 W64LIT(0x391c0cb3c5c95a63), W64LIT(0x4ed8aa4ae3418acb),
ashleymills 0:714293de3836 93 W64LIT(0x5b9cca4f7763e373), W64LIT(0x682e6ff3d6b2b8a3),
ashleymills 0:714293de3836 94 W64LIT(0x748f82ee5defb2fc), W64LIT(0x78a5636f43172f60),
ashleymills 0:714293de3836 95 W64LIT(0x84c87814a1f0ab72), W64LIT(0x8cc702081a6439ec),
ashleymills 0:714293de3836 96 W64LIT(0x90befffa23631e28), W64LIT(0xa4506cebde82bde9),
ashleymills 0:714293de3836 97 W64LIT(0xbef9a3f7b2c67915), W64LIT(0xc67178f2e372532b),
ashleymills 0:714293de3836 98 W64LIT(0xca273eceea26619c), W64LIT(0xd186b8c721c0c207),
ashleymills 0:714293de3836 99 W64LIT(0xeada7dd6cde0eb1e), W64LIT(0xf57d4f7fee6ed178),
ashleymills 0:714293de3836 100 W64LIT(0x06f067aa72176fba), W64LIT(0x0a637dc5a2c898a6),
ashleymills 0:714293de3836 101 W64LIT(0x113f9804bef90dae), W64LIT(0x1b710b35131c471b),
ashleymills 0:714293de3836 102 W64LIT(0x28db77f523047d84), W64LIT(0x32caab7b40c72493),
ashleymills 0:714293de3836 103 W64LIT(0x3c9ebe0a15c9bebc), W64LIT(0x431d67c49c100d4c),
ashleymills 0:714293de3836 104 W64LIT(0x4cc5d4becb3e42b6), W64LIT(0x597f299cfc657e2a),
ashleymills 0:714293de3836 105 W64LIT(0x5fcb6fab3ad6faec), W64LIT(0x6c44198c4a475817)
ashleymills 0:714293de3836 106 };
ashleymills 0:714293de3836 107
ashleymills 0:714293de3836 108
ashleymills 0:714293de3836 109 #define blk0(i) (W[i] = sha512->buffer[i])
ashleymills 0:714293de3836 110 #define blk2(i) (W[i&15]+=s1(W[(i-2)&15])+W[(i-7)&15]+s0(W[(i-15)&15]))
ashleymills 0:714293de3836 111
ashleymills 0:714293de3836 112 #define Ch(x,y,z) (z^(x&(y^z)))
ashleymills 0:714293de3836 113 #define Maj(x,y,z) ((x&y)|(z&(x|y)))
ashleymills 0:714293de3836 114
ashleymills 0:714293de3836 115 #define a(i) T[(0-i)&7]
ashleymills 0:714293de3836 116 #define b(i) T[(1-i)&7]
ashleymills 0:714293de3836 117 #define c(i) T[(2-i)&7]
ashleymills 0:714293de3836 118 #define d(i) T[(3-i)&7]
ashleymills 0:714293de3836 119 #define e(i) T[(4-i)&7]
ashleymills 0:714293de3836 120 #define f(i) T[(5-i)&7]
ashleymills 0:714293de3836 121 #define g(i) T[(6-i)&7]
ashleymills 0:714293de3836 122 #define h(i) T[(7-i)&7]
ashleymills 0:714293de3836 123
ashleymills 0:714293de3836 124 #define S0(x) (rotrFixed64(x,28)^rotrFixed64(x,34)^rotrFixed64(x,39))
ashleymills 0:714293de3836 125 #define S1(x) (rotrFixed64(x,14)^rotrFixed64(x,18)^rotrFixed64(x,41))
ashleymills 0:714293de3836 126 #define s0(x) (rotrFixed64(x,1)^rotrFixed64(x,8)^(x>>7))
ashleymills 0:714293de3836 127 #define s1(x) (rotrFixed64(x,19)^rotrFixed64(x,61)^(x>>6))
ashleymills 0:714293de3836 128
ashleymills 0:714293de3836 129 #define R(i) h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+K[i+j]+(j?blk2(i):blk0(i));\
ashleymills 0:714293de3836 130 d(i)+=h(i);h(i)+=S0(a(i))+Maj(a(i),b(i),c(i))
ashleymills 0:714293de3836 131
ashleymills 0:714293de3836 132 #define blk384(i) (W[i] = sha384->buffer[i])
ashleymills 0:714293de3836 133
ashleymills 0:714293de3836 134 #define R2(i) h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+K[i+j]+(j?blk2(i):blk384(i));\
ashleymills 0:714293de3836 135 d(i)+=h(i);h(i)+=S0(a(i))+Maj(a(i),b(i),c(i))
ashleymills 0:714293de3836 136
ashleymills 0:714293de3836 137
ashleymills 0:714293de3836 138 static void Transform(Sha512* sha512)
ashleymills 0:714293de3836 139 {
ashleymills 0:714293de3836 140 const word64* K = K512;
ashleymills 0:714293de3836 141
ashleymills 0:714293de3836 142 word32 j;
ashleymills 0:714293de3836 143 word64 W[16];
ashleymills 0:714293de3836 144 word64 T[8];
ashleymills 0:714293de3836 145
ashleymills 0:714293de3836 146 /* Copy digest to working vars */
ashleymills 0:714293de3836 147 XMEMCPY(T, sha512->digest, sizeof(T));
ashleymills 0:714293de3836 148
ashleymills 0:714293de3836 149 /* 64 operations, partially loop unrolled */
ashleymills 0:714293de3836 150 for (j = 0; j < 80; j += 16) {
ashleymills 0:714293de3836 151 R( 0); R( 1); R( 2); R( 3);
ashleymills 0:714293de3836 152 R( 4); R( 5); R( 6); R( 7);
ashleymills 0:714293de3836 153 R( 8); R( 9); R(10); R(11);
ashleymills 0:714293de3836 154 R(12); R(13); R(14); R(15);
ashleymills 0:714293de3836 155 }
ashleymills 0:714293de3836 156
ashleymills 0:714293de3836 157 /* Add the working vars back into digest */
ashleymills 0:714293de3836 158
ashleymills 0:714293de3836 159 sha512->digest[0] += a(0);
ashleymills 0:714293de3836 160 sha512->digest[1] += b(0);
ashleymills 0:714293de3836 161 sha512->digest[2] += c(0);
ashleymills 0:714293de3836 162 sha512->digest[3] += d(0);
ashleymills 0:714293de3836 163 sha512->digest[4] += e(0);
ashleymills 0:714293de3836 164 sha512->digest[5] += f(0);
ashleymills 0:714293de3836 165 sha512->digest[6] += g(0);
ashleymills 0:714293de3836 166 sha512->digest[7] += h(0);
ashleymills 0:714293de3836 167
ashleymills 0:714293de3836 168 /* Wipe variables */
ashleymills 0:714293de3836 169 XMEMSET(W, 0, sizeof(W));
ashleymills 0:714293de3836 170 XMEMSET(T, 0, sizeof(T));
ashleymills 0:714293de3836 171 }
ashleymills 0:714293de3836 172
ashleymills 0:714293de3836 173
ashleymills 0:714293de3836 174 static INLINE void AddLength(Sha512* sha512, word32 len)
ashleymills 0:714293de3836 175 {
ashleymills 0:714293de3836 176 word32 tmp = sha512->loLen;
ashleymills 0:714293de3836 177 if ( (sha512->loLen += len) < tmp)
ashleymills 0:714293de3836 178 sha512->hiLen++; /* carry low to high */
ashleymills 0:714293de3836 179 }
ashleymills 0:714293de3836 180
ashleymills 0:714293de3836 181
ashleymills 0:714293de3836 182 void Sha512Update(Sha512* sha512, const byte* data, word32 len)
ashleymills 0:714293de3836 183 {
ashleymills 0:714293de3836 184 /* do block size increments */
ashleymills 0:714293de3836 185 byte* local = (byte*)sha512->buffer;
ashleymills 0:714293de3836 186
ashleymills 0:714293de3836 187 while (len) {
ashleymills 0:714293de3836 188 word32 add = min(len, SHA512_BLOCK_SIZE - sha512->buffLen);
ashleymills 0:714293de3836 189 XMEMCPY(&local[sha512->buffLen], data, add);
ashleymills 0:714293de3836 190
ashleymills 0:714293de3836 191 sha512->buffLen += add;
ashleymills 0:714293de3836 192 data += add;
ashleymills 0:714293de3836 193 len -= add;
ashleymills 0:714293de3836 194
ashleymills 0:714293de3836 195 if (sha512->buffLen == SHA512_BLOCK_SIZE) {
ashleymills 0:714293de3836 196 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 197 ByteReverseWords64(sha512->buffer, sha512->buffer,
ashleymills 0:714293de3836 198 SHA512_BLOCK_SIZE);
ashleymills 0:714293de3836 199 #endif
ashleymills 0:714293de3836 200 Transform(sha512);
ashleymills 0:714293de3836 201 AddLength(sha512, SHA512_BLOCK_SIZE);
ashleymills 0:714293de3836 202 sha512->buffLen = 0;
ashleymills 0:714293de3836 203 }
ashleymills 0:714293de3836 204 }
ashleymills 0:714293de3836 205 }
ashleymills 0:714293de3836 206
ashleymills 0:714293de3836 207
ashleymills 0:714293de3836 208 void Sha512Final(Sha512* sha512, byte* hash)
ashleymills 0:714293de3836 209 {
ashleymills 0:714293de3836 210 byte* local = (byte*)sha512->buffer;
ashleymills 0:714293de3836 211
ashleymills 0:714293de3836 212 AddLength(sha512, sha512->buffLen); /* before adding pads */
ashleymills 0:714293de3836 213
ashleymills 0:714293de3836 214 local[sha512->buffLen++] = 0x80; /* add 1 */
ashleymills 0:714293de3836 215
ashleymills 0:714293de3836 216 /* pad with zeros */
ashleymills 0:714293de3836 217 if (sha512->buffLen > SHA512_PAD_SIZE) {
ashleymills 0:714293de3836 218 XMEMSET(&local[sha512->buffLen], 0, SHA512_BLOCK_SIZE -sha512->buffLen);
ashleymills 0:714293de3836 219 sha512->buffLen += SHA512_BLOCK_SIZE - sha512->buffLen;
ashleymills 0:714293de3836 220
ashleymills 0:714293de3836 221 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 222 ByteReverseWords64(sha512->buffer,sha512->buffer,SHA512_BLOCK_SIZE);
ashleymills 0:714293de3836 223 #endif
ashleymills 0:714293de3836 224 Transform(sha512);
ashleymills 0:714293de3836 225 sha512->buffLen = 0;
ashleymills 0:714293de3836 226 }
ashleymills 0:714293de3836 227 XMEMSET(&local[sha512->buffLen], 0, SHA512_PAD_SIZE - sha512->buffLen);
ashleymills 0:714293de3836 228
ashleymills 0:714293de3836 229 /* put lengths in bits */
ashleymills 0:714293de3836 230 sha512->hiLen = (sha512->loLen >> (8*sizeof(sha512->loLen) - 3)) +
ashleymills 0:714293de3836 231 (sha512->hiLen << 3);
ashleymills 0:714293de3836 232 sha512->loLen = sha512->loLen << 3;
ashleymills 0:714293de3836 233
ashleymills 0:714293de3836 234 /* store lengths */
ashleymills 0:714293de3836 235 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 236 ByteReverseWords64(sha512->buffer, sha512->buffer, SHA512_PAD_SIZE);
ashleymills 0:714293de3836 237 #endif
ashleymills 0:714293de3836 238 /* ! length ordering dependent on digest endian type ! */
ashleymills 0:714293de3836 239 sha512->buffer[SHA512_BLOCK_SIZE / sizeof(word64) - 2] = sha512->hiLen;
ashleymills 0:714293de3836 240 sha512->buffer[SHA512_BLOCK_SIZE / sizeof(word64) - 1] = sha512->loLen;
ashleymills 0:714293de3836 241
ashleymills 0:714293de3836 242 Transform(sha512);
ashleymills 0:714293de3836 243 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 244 ByteReverseWords64(sha512->digest, sha512->digest, SHA512_DIGEST_SIZE);
ashleymills 0:714293de3836 245 #endif
ashleymills 0:714293de3836 246 XMEMCPY(hash, sha512->digest, SHA512_DIGEST_SIZE);
ashleymills 0:714293de3836 247
ashleymills 0:714293de3836 248 InitSha512(sha512); /* reset state */
ashleymills 0:714293de3836 249 }
ashleymills 0:714293de3836 250
ashleymills 0:714293de3836 251
ashleymills 0:714293de3836 252
ashleymills 0:714293de3836 253 #ifdef CYASSL_SHA384
ashleymills 0:714293de3836 254
ashleymills 0:714293de3836 255 void InitSha384(Sha384* sha384)
ashleymills 0:714293de3836 256 {
ashleymills 0:714293de3836 257 sha384->digest[0] = W64LIT(0xcbbb9d5dc1059ed8);
ashleymills 0:714293de3836 258 sha384->digest[1] = W64LIT(0x629a292a367cd507);
ashleymills 0:714293de3836 259 sha384->digest[2] = W64LIT(0x9159015a3070dd17);
ashleymills 0:714293de3836 260 sha384->digest[3] = W64LIT(0x152fecd8f70e5939);
ashleymills 0:714293de3836 261 sha384->digest[4] = W64LIT(0x67332667ffc00b31);
ashleymills 0:714293de3836 262 sha384->digest[5] = W64LIT(0x8eb44a8768581511);
ashleymills 0:714293de3836 263 sha384->digest[6] = W64LIT(0xdb0c2e0d64f98fa7);
ashleymills 0:714293de3836 264 sha384->digest[7] = W64LIT(0x47b5481dbefa4fa4);
ashleymills 0:714293de3836 265
ashleymills 0:714293de3836 266 sha384->buffLen = 0;
ashleymills 0:714293de3836 267 sha384->loLen = 0;
ashleymills 0:714293de3836 268 sha384->hiLen = 0;
ashleymills 0:714293de3836 269 }
ashleymills 0:714293de3836 270
ashleymills 0:714293de3836 271
ashleymills 0:714293de3836 272 static void Transform384(Sha384* sha384)
ashleymills 0:714293de3836 273 {
ashleymills 0:714293de3836 274 const word64* K = K512;
ashleymills 0:714293de3836 275
ashleymills 0:714293de3836 276 word32 j;
ashleymills 0:714293de3836 277 word64 W[16];
ashleymills 0:714293de3836 278 word64 T[8];
ashleymills 0:714293de3836 279
ashleymills 0:714293de3836 280 /* Copy digest to working vars */
ashleymills 0:714293de3836 281 XMEMCPY(T, sha384->digest, sizeof(T));
ashleymills 0:714293de3836 282
ashleymills 0:714293de3836 283 /* 64 operations, partially loop unrolled */
ashleymills 0:714293de3836 284 for (j = 0; j < 80; j += 16) {
ashleymills 0:714293de3836 285 R2( 0); R2( 1); R2( 2); R2( 3);
ashleymills 0:714293de3836 286 R2( 4); R2( 5); R2( 6); R2( 7);
ashleymills 0:714293de3836 287 R2( 8); R2( 9); R2(10); R2(11);
ashleymills 0:714293de3836 288 R2(12); R2(13); R2(14); R2(15);
ashleymills 0:714293de3836 289 }
ashleymills 0:714293de3836 290
ashleymills 0:714293de3836 291 /* Add the working vars back into digest */
ashleymills 0:714293de3836 292
ashleymills 0:714293de3836 293 sha384->digest[0] += a(0);
ashleymills 0:714293de3836 294 sha384->digest[1] += b(0);
ashleymills 0:714293de3836 295 sha384->digest[2] += c(0);
ashleymills 0:714293de3836 296 sha384->digest[3] += d(0);
ashleymills 0:714293de3836 297 sha384->digest[4] += e(0);
ashleymills 0:714293de3836 298 sha384->digest[5] += f(0);
ashleymills 0:714293de3836 299 sha384->digest[6] += g(0);
ashleymills 0:714293de3836 300 sha384->digest[7] += h(0);
ashleymills 0:714293de3836 301
ashleymills 0:714293de3836 302 /* Wipe variables */
ashleymills 0:714293de3836 303 XMEMSET(W, 0, sizeof(W));
ashleymills 0:714293de3836 304 XMEMSET(T, 0, sizeof(T));
ashleymills 0:714293de3836 305 }
ashleymills 0:714293de3836 306
ashleymills 0:714293de3836 307
ashleymills 0:714293de3836 308 static INLINE void AddLength384(Sha384* sha384, word32 len)
ashleymills 0:714293de3836 309 {
ashleymills 0:714293de3836 310 word32 tmp = sha384->loLen;
ashleymills 0:714293de3836 311 if ( (sha384->loLen += len) < tmp)
ashleymills 0:714293de3836 312 sha384->hiLen++; /* carry low to high */
ashleymills 0:714293de3836 313 }
ashleymills 0:714293de3836 314
ashleymills 0:714293de3836 315
ashleymills 0:714293de3836 316 void Sha384Update(Sha384* sha384, const byte* data, word32 len)
ashleymills 0:714293de3836 317 {
ashleymills 0:714293de3836 318 /* do block size increments */
ashleymills 0:714293de3836 319 byte* local = (byte*)sha384->buffer;
ashleymills 0:714293de3836 320
ashleymills 0:714293de3836 321 while (len) {
ashleymills 0:714293de3836 322 word32 add = min(len, SHA384_BLOCK_SIZE - sha384->buffLen);
ashleymills 0:714293de3836 323 XMEMCPY(&local[sha384->buffLen], data, add);
ashleymills 0:714293de3836 324
ashleymills 0:714293de3836 325 sha384->buffLen += add;
ashleymills 0:714293de3836 326 data += add;
ashleymills 0:714293de3836 327 len -= add;
ashleymills 0:714293de3836 328
ashleymills 0:714293de3836 329 if (sha384->buffLen == SHA384_BLOCK_SIZE) {
ashleymills 0:714293de3836 330 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 331 ByteReverseWords64(sha384->buffer, sha384->buffer,
ashleymills 0:714293de3836 332 SHA384_BLOCK_SIZE);
ashleymills 0:714293de3836 333 #endif
ashleymills 0:714293de3836 334 Transform384(sha384);
ashleymills 0:714293de3836 335 AddLength384(sha384, SHA384_BLOCK_SIZE);
ashleymills 0:714293de3836 336 sha384->buffLen = 0;
ashleymills 0:714293de3836 337 }
ashleymills 0:714293de3836 338 }
ashleymills 0:714293de3836 339 }
ashleymills 0:714293de3836 340
ashleymills 0:714293de3836 341
ashleymills 0:714293de3836 342 void Sha384Final(Sha384* sha384, byte* hash)
ashleymills 0:714293de3836 343 {
ashleymills 0:714293de3836 344 byte* local = (byte*)sha384->buffer;
ashleymills 0:714293de3836 345
ashleymills 0:714293de3836 346 AddLength384(sha384, sha384->buffLen); /* before adding pads */
ashleymills 0:714293de3836 347
ashleymills 0:714293de3836 348 local[sha384->buffLen++] = 0x80; /* add 1 */
ashleymills 0:714293de3836 349
ashleymills 0:714293de3836 350 /* pad with zeros */
ashleymills 0:714293de3836 351 if (sha384->buffLen > SHA384_PAD_SIZE) {
ashleymills 0:714293de3836 352 XMEMSET(&local[sha384->buffLen], 0, SHA384_BLOCK_SIZE -sha384->buffLen);
ashleymills 0:714293de3836 353 sha384->buffLen += SHA384_BLOCK_SIZE - sha384->buffLen;
ashleymills 0:714293de3836 354
ashleymills 0:714293de3836 355 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 356 ByteReverseWords64(sha384->buffer,sha384->buffer,SHA384_BLOCK_SIZE);
ashleymills 0:714293de3836 357 #endif
ashleymills 0:714293de3836 358 Transform384(sha384);
ashleymills 0:714293de3836 359 sha384->buffLen = 0;
ashleymills 0:714293de3836 360 }
ashleymills 0:714293de3836 361 XMEMSET(&local[sha384->buffLen], 0, SHA384_PAD_SIZE - sha384->buffLen);
ashleymills 0:714293de3836 362
ashleymills 0:714293de3836 363 /* put lengths in bits */
ashleymills 0:714293de3836 364 sha384->hiLen = (sha384->loLen >> (8*sizeof(sha384->loLen) - 3)) +
ashleymills 0:714293de3836 365 (sha384->hiLen << 3);
ashleymills 0:714293de3836 366 sha384->loLen = sha384->loLen << 3;
ashleymills 0:714293de3836 367
ashleymills 0:714293de3836 368 /* store lengths */
ashleymills 0:714293de3836 369 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 370 ByteReverseWords64(sha384->buffer, sha384->buffer, SHA384_PAD_SIZE);
ashleymills 0:714293de3836 371 #endif
ashleymills 0:714293de3836 372 /* ! length ordering dependent on digest endian type ! */
ashleymills 0:714293de3836 373 sha384->buffer[SHA384_BLOCK_SIZE / sizeof(word64) - 2] = sha384->hiLen;
ashleymills 0:714293de3836 374 sha384->buffer[SHA384_BLOCK_SIZE / sizeof(word64) - 1] = sha384->loLen;
ashleymills 0:714293de3836 375
ashleymills 0:714293de3836 376 Transform384(sha384);
ashleymills 0:714293de3836 377 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 378 ByteReverseWords64(sha384->digest, sha384->digest, SHA384_DIGEST_SIZE);
ashleymills 0:714293de3836 379 #endif
ashleymills 0:714293de3836 380 XMEMCPY(hash, sha384->digest, SHA384_DIGEST_SIZE);
ashleymills 0:714293de3836 381
ashleymills 0:714293de3836 382 InitSha384(sha384); /* reset state */
ashleymills 0:714293de3836 383 }
ashleymills 0:714293de3836 384
ashleymills 0:714293de3836 385 #endif /* CYASSL_SHA384 */
ashleymills 0:714293de3836 386
ashleymills 0:714293de3836 387 #endif /* CYASSL_SHA512 */