3 * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
5 * This file is part of CyaSSL.
7 * CyaSSL is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * CyaSSL is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
29 #include <cyassl/ctaocrypt/md2.h>
31 #include <cyassl/ctaocrypt/misc.h>
33 #include <ctaocrypt/src/misc.c>
37 void InitMd2(Md2* md2)
39 XMEMSET(md2->X, 0, MD2_X_SIZE);
40 XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
41 XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
46 void Md2Update(Md2* md2, const byte* data, word32 len)
48 static const byte S[256] =
50 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
51 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
52 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
53 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
54 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
55 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
56 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
57 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
58 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
59 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
60 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
61 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
62 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
63 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
64 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
65 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
66 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
67 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
71 word32 L = (MD2_PAD_SIZE - md2->count) < len ?
72 (MD2_PAD_SIZE - md2->count) : len;
73 XMEMCPY(md2->buffer + md2->count, data, L);
78 if (md2->count == MD2_PAD_SIZE) {
83 XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
86 for(i = 0; i < MD2_PAD_SIZE; i++) {
87 md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
88 t = md2->C[i] ^= S[md2->buffer[i] ^ t];
92 for(i = 0; i < 18; i++) {
94 for(j = 0; j < MD2_X_SIZE; j += 8) {
95 t = md2->X[j+0] ^= S[t];
96 t = md2->X[j+1] ^= S[t];
97 t = md2->X[j+2] ^= S[t];
98 t = md2->X[j+3] ^= S[t];
99 t = md2->X[j+4] ^= S[t];
100 t = md2->X[j+5] ^= S[t];
101 t = md2->X[j+6] ^= S[t];
102 t = md2->X[j+7] ^= S[t];
111 void Md2Final(Md2* md2, byte* hash)
113 byte padding[MD2_BLOCK_SIZE];
114 word32 padLen = MD2_PAD_SIZE - md2->count;
117 for (i = 0; i < padLen; i++)
118 padding[i] = (byte)padLen;
120 Md2Update(md2, padding, padLen);
121 Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
123 XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
129 #endif /* CYASSL_MD2 */