wolf SSL / wolfSSL

wolfSSL SSL/TLS library, support up to TLS1.3

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wolfcrypt/src/md2.c@4:1b0d80432c79, 2016-04-28 (annotated)

Committer:
wolfSSL
Date:
Thu Apr 28 00:57:21 2016 +0000
Revision:
4:1b0d80432c79
wolfSSL 3.9.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 4:1b0d80432c79 1 /* md2.c
wolfSSL 4:1b0d80432c79 2 *
wolfSSL 4:1b0d80432c79 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 4:1b0d80432c79 4 *
wolfSSL 4:1b0d80432c79 5 * This file is part of wolfSSL.
wolfSSL 4:1b0d80432c79 6 *
wolfSSL 4:1b0d80432c79 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 4:1b0d80432c79 8 * it under the terms of the GNU General Public License as published by
wolfSSL 4:1b0d80432c79 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 4:1b0d80432c79 10 * (at your option) any later version.
wolfSSL 4:1b0d80432c79 11 *
wolfSSL 4:1b0d80432c79 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 4:1b0d80432c79 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 4:1b0d80432c79 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 4:1b0d80432c79 15 * GNU General Public License for more details.
wolfSSL 4:1b0d80432c79 16 *
wolfSSL 4:1b0d80432c79 17 * You should have received a copy of the GNU General Public License
wolfSSL 4:1b0d80432c79 18 * along with this program; if not, write to the Free Software
wolfSSL 4:1b0d80432c79 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 4:1b0d80432c79 20 */
wolfSSL 4:1b0d80432c79 21
wolfSSL 4:1b0d80432c79 22
wolfSSL 4:1b0d80432c79 23
wolfSSL 4:1b0d80432c79 24 #ifdef HAVE_CONFIG_H
wolfSSL 4:1b0d80432c79 25 #include <config.h>
wolfSSL 4:1b0d80432c79 26 #endif
wolfSSL 4:1b0d80432c79 27
wolfSSL 4:1b0d80432c79 28 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 4:1b0d80432c79 29
wolfSSL 4:1b0d80432c79 30 #ifdef WOLFSSL_MD2
wolfSSL 4:1b0d80432c79 31
wolfSSL 4:1b0d80432c79 32 #include <wolfssl/wolfcrypt/md2.h>
wolfSSL 4:1b0d80432c79 33 #include <wolfssl/wolfcrypt/error-crypt.h>
wolfSSL 4:1b0d80432c79 34
wolfSSL 4:1b0d80432c79 35 #ifdef NO_INLINE
wolfSSL 4:1b0d80432c79 36 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 4:1b0d80432c79 37 #else
wolfSSL 4:1b0d80432c79 38 #include <wolfcrypt/src/misc.c>
wolfSSL 4:1b0d80432c79 39 #endif
wolfSSL 4:1b0d80432c79 40
wolfSSL 4:1b0d80432c79 41
wolfSSL 4:1b0d80432c79 42 void wc_InitMd2(Md2* md2)
wolfSSL 4:1b0d80432c79 43 {
wolfSSL 4:1b0d80432c79 44 XMEMSET(md2->X, 0, MD2_X_SIZE);
wolfSSL 4:1b0d80432c79 45 XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 46 XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 47 md2->count = 0;
wolfSSL 4:1b0d80432c79 48 }
wolfSSL 4:1b0d80432c79 49
wolfSSL 4:1b0d80432c79 50
wolfSSL 4:1b0d80432c79 51 void wc_Md2Update(Md2* md2, const byte* data, word32 len)
wolfSSL 4:1b0d80432c79 52 {
wolfSSL 4:1b0d80432c79 53 static const byte S[256] =
wolfSSL 4:1b0d80432c79 54 {
wolfSSL 4:1b0d80432c79 55 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
wolfSSL 4:1b0d80432c79 56 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
wolfSSL 4:1b0d80432c79 57 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
wolfSSL 4:1b0d80432c79 58 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
wolfSSL 4:1b0d80432c79 59 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
wolfSSL 4:1b0d80432c79 60 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
wolfSSL 4:1b0d80432c79 61 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
wolfSSL 4:1b0d80432c79 62 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
wolfSSL 4:1b0d80432c79 63 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
wolfSSL 4:1b0d80432c79 64 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
wolfSSL 4:1b0d80432c79 65 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
wolfSSL 4:1b0d80432c79 66 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
wolfSSL 4:1b0d80432c79 67 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
wolfSSL 4:1b0d80432c79 68 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
wolfSSL 4:1b0d80432c79 69 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
wolfSSL 4:1b0d80432c79 70 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
wolfSSL 4:1b0d80432c79 71 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
wolfSSL 4:1b0d80432c79 72 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
wolfSSL 4:1b0d80432c79 73 };
wolfSSL 4:1b0d80432c79 74
wolfSSL 4:1b0d80432c79 75 while (len) {
wolfSSL 4:1b0d80432c79 76 word32 L = (MD2_PAD_SIZE - md2->count) < len ?
wolfSSL 4:1b0d80432c79 77 (MD2_PAD_SIZE - md2->count) : len;
wolfSSL 4:1b0d80432c79 78 XMEMCPY(md2->buffer + md2->count, data, L);
wolfSSL 4:1b0d80432c79 79 md2->count += L;
wolfSSL 4:1b0d80432c79 80 data += L;
wolfSSL 4:1b0d80432c79 81 len -= L;
wolfSSL 4:1b0d80432c79 82
wolfSSL 4:1b0d80432c79 83 if (md2->count == MD2_PAD_SIZE) {
wolfSSL 4:1b0d80432c79 84 int i;
wolfSSL 4:1b0d80432c79 85 byte t;
wolfSSL 4:1b0d80432c79 86
wolfSSL 4:1b0d80432c79 87 md2->count = 0;
wolfSSL 4:1b0d80432c79 88 XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
wolfSSL 4:1b0d80432c79 89 t = md2->C[15];
wolfSSL 4:1b0d80432c79 90
wolfSSL 4:1b0d80432c79 91 for(i = 0; i < MD2_PAD_SIZE; i++) {
wolfSSL 4:1b0d80432c79 92 md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
wolfSSL 4:1b0d80432c79 93 t = md2->C[i] ^= S[md2->buffer[i] ^ t];
wolfSSL 4:1b0d80432c79 94 }
wolfSSL 4:1b0d80432c79 95
wolfSSL 4:1b0d80432c79 96 t=0;
wolfSSL 4:1b0d80432c79 97 for(i = 0; i < 18; i++) {
wolfSSL 4:1b0d80432c79 98 int j;
wolfSSL 4:1b0d80432c79 99 for(j = 0; j < MD2_X_SIZE; j += 8) {
wolfSSL 4:1b0d80432c79 100 t = md2->X[j+0] ^= S[t];
wolfSSL 4:1b0d80432c79 101 t = md2->X[j+1] ^= S[t];
wolfSSL 4:1b0d80432c79 102 t = md2->X[j+2] ^= S[t];
wolfSSL 4:1b0d80432c79 103 t = md2->X[j+3] ^= S[t];
wolfSSL 4:1b0d80432c79 104 t = md2->X[j+4] ^= S[t];
wolfSSL 4:1b0d80432c79 105 t = md2->X[j+5] ^= S[t];
wolfSSL 4:1b0d80432c79 106 t = md2->X[j+6] ^= S[t];
wolfSSL 4:1b0d80432c79 107 t = md2->X[j+7] ^= S[t];
wolfSSL 4:1b0d80432c79 108 }
wolfSSL 4:1b0d80432c79 109 t = (t + i) & 0xFF;
wolfSSL 4:1b0d80432c79 110 }
wolfSSL 4:1b0d80432c79 111 }
wolfSSL 4:1b0d80432c79 112 }
wolfSSL 4:1b0d80432c79 113 }
wolfSSL 4:1b0d80432c79 114
wolfSSL 4:1b0d80432c79 115
wolfSSL 4:1b0d80432c79 116 void wc_Md2Final(Md2* md2, byte* hash)
wolfSSL 4:1b0d80432c79 117 {
wolfSSL 4:1b0d80432c79 118 byte padding[MD2_BLOCK_SIZE];
wolfSSL 4:1b0d80432c79 119 word32 padLen = MD2_PAD_SIZE - md2->count;
wolfSSL 4:1b0d80432c79 120 word32 i;
wolfSSL 4:1b0d80432c79 121
wolfSSL 4:1b0d80432c79 122 for (i = 0; i < padLen; i++)
wolfSSL 4:1b0d80432c79 123 padding[i] = (byte)padLen;
wolfSSL 4:1b0d80432c79 124
wolfSSL 4:1b0d80432c79 125 wc_Md2Update(md2, padding, padLen);
wolfSSL 4:1b0d80432c79 126 wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 127
wolfSSL 4:1b0d80432c79 128 XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
wolfSSL 4:1b0d80432c79 129
wolfSSL 4:1b0d80432c79 130 wc_InitMd2(md2);
wolfSSL 4:1b0d80432c79 131 }
wolfSSL 4:1b0d80432c79 132
wolfSSL 4:1b0d80432c79 133
wolfSSL 4:1b0d80432c79 134 int wc_Md2Hash(const byte* data, word32 len, byte* hash)
wolfSSL 4:1b0d80432c79 135 {
wolfSSL 4:1b0d80432c79 136 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 4:1b0d80432c79 137 Md2* md2;
wolfSSL 4:1b0d80432c79 138 #else
wolfSSL 4:1b0d80432c79 139 Md2 md2[1];
wolfSSL 4:1b0d80432c79 140 #endif
wolfSSL 4:1b0d80432c79 141
wolfSSL 4:1b0d80432c79 142 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 4:1b0d80432c79 143 md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 4:1b0d80432c79 144 if (md2 == NULL)
wolfSSL 4:1b0d80432c79 145 return MEMORY_E;
wolfSSL 4:1b0d80432c79 146 #endif
wolfSSL 4:1b0d80432c79 147
wolfSSL 4:1b0d80432c79 148 wc_InitMd2(md2);
wolfSSL 4:1b0d80432c79 149 wc_Md2Update(md2, data, len);
wolfSSL 4:1b0d80432c79 150 wc_Md2Final(md2, hash);
wolfSSL 4:1b0d80432c79 151
wolfSSL 4:1b0d80432c79 152 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 4:1b0d80432c79 153 XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 4:1b0d80432c79 154 #endif
wolfSSL 4:1b0d80432c79 155
wolfSSL 4:1b0d80432c79 156 return 0;
wolfSSL 4:1b0d80432c79 157 }
wolfSSL 4:1b0d80432c79 158
wolfSSL 4:1b0d80432c79 159
wolfSSL 4:1b0d80432c79 160 #endif /* WOLFSSL_MD2 */
wolfSSL 4:1b0d80432c79 161
wolfSSL 4:1b0d80432c79 162