wolf SSL / wolfSSL

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

Dependents:   CyaSSL-Twitter-OAuth4Tw Example-client-tls-cert TwitterReader TweetTest ... more

wolfcrypt/src/md2.c@7:481bce714567, 2017-05-02 (annotated)

Committer:
wolfSSL
Date:
Tue May 02 08:44:47 2017 +0000
Revision:
7:481bce714567
wolfSSL3.10.2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 7:481bce714567 1 /* md2.c
wolfSSL 7:481bce714567 2 *
wolfSSL 7:481bce714567 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 7:481bce714567 4 *
wolfSSL 7:481bce714567 5 * This file is part of wolfSSL.
wolfSSL 7:481bce714567 6 *
wolfSSL 7:481bce714567 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 7:481bce714567 8 * it under the terms of the GNU General Public License as published by
wolfSSL 7:481bce714567 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 7:481bce714567 10 * (at your option) any later version.
wolfSSL 7:481bce714567 11 *
wolfSSL 7:481bce714567 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 7:481bce714567 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 7:481bce714567 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 7:481bce714567 15 * GNU General Public License for more details.
wolfSSL 7:481bce714567 16 *
wolfSSL 7:481bce714567 17 * You should have received a copy of the GNU General Public License
wolfSSL 7:481bce714567 18 * along with this program; if not, write to the Free Software
wolfSSL 7:481bce714567 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 7:481bce714567 20 */
wolfSSL 7:481bce714567 21
wolfSSL 7:481bce714567 22
wolfSSL 7:481bce714567 23
wolfSSL 7:481bce714567 24 #ifdef HAVE_CONFIG_H
wolfSSL 7:481bce714567 25 #include <config.h>
wolfSSL 7:481bce714567 26 #endif
wolfSSL 7:481bce714567 27
wolfSSL 7:481bce714567 28 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 7:481bce714567 29
wolfSSL 7:481bce714567 30 #ifdef WOLFSSL_MD2
wolfSSL 7:481bce714567 31
wolfSSL 7:481bce714567 32 #include <wolfssl/wolfcrypt/md2.h>
wolfSSL 7:481bce714567 33 #include <wolfssl/wolfcrypt/error-crypt.h>
wolfSSL 7:481bce714567 34
wolfSSL 7:481bce714567 35 #ifdef NO_INLINE
wolfSSL 7:481bce714567 36 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 7:481bce714567 37 #else
wolfSSL 7:481bce714567 38 #define WOLFSSL_MISC_INCLUDED
wolfSSL 7:481bce714567 39 #include <wolfcrypt/src/misc.c>
wolfSSL 7:481bce714567 40 #endif
wolfSSL 7:481bce714567 41
wolfSSL 7:481bce714567 42
wolfSSL 7:481bce714567 43 void wc_InitMd2(Md2* md2)
wolfSSL 7:481bce714567 44 {
wolfSSL 7:481bce714567 45 XMEMSET(md2->X, 0, MD2_X_SIZE);
wolfSSL 7:481bce714567 46 XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
wolfSSL 7:481bce714567 47 XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
wolfSSL 7:481bce714567 48 md2->count = 0;
wolfSSL 7:481bce714567 49 }
wolfSSL 7:481bce714567 50
wolfSSL 7:481bce714567 51
wolfSSL 7:481bce714567 52 void wc_Md2Update(Md2* md2, const byte* data, word32 len)
wolfSSL 7:481bce714567 53 {
wolfSSL 7:481bce714567 54 static const byte S[256] =
wolfSSL 7:481bce714567 55 {
wolfSSL 7:481bce714567 56 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
wolfSSL 7:481bce714567 57 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
wolfSSL 7:481bce714567 58 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
wolfSSL 7:481bce714567 59 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
wolfSSL 7:481bce714567 60 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
wolfSSL 7:481bce714567 61 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
wolfSSL 7:481bce714567 62 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
wolfSSL 7:481bce714567 63 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
wolfSSL 7:481bce714567 64 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
wolfSSL 7:481bce714567 65 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
wolfSSL 7:481bce714567 66 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
wolfSSL 7:481bce714567 67 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
wolfSSL 7:481bce714567 68 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
wolfSSL 7:481bce714567 69 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
wolfSSL 7:481bce714567 70 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
wolfSSL 7:481bce714567 71 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
wolfSSL 7:481bce714567 72 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
wolfSSL 7:481bce714567 73 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
wolfSSL 7:481bce714567 74 };
wolfSSL 7:481bce714567 75
wolfSSL 7:481bce714567 76 while (len) {
wolfSSL 7:481bce714567 77 word32 L = (MD2_PAD_SIZE - md2->count) < len ?
wolfSSL 7:481bce714567 78 (MD2_PAD_SIZE - md2->count) : len;
wolfSSL 7:481bce714567 79 XMEMCPY(md2->buffer + md2->count, data, L);
wolfSSL 7:481bce714567 80 md2->count += L;
wolfSSL 7:481bce714567 81 data += L;
wolfSSL 7:481bce714567 82 len -= L;
wolfSSL 7:481bce714567 83
wolfSSL 7:481bce714567 84 if (md2->count == MD2_PAD_SIZE) {
wolfSSL 7:481bce714567 85 int i;
wolfSSL 7:481bce714567 86 byte t;
wolfSSL 7:481bce714567 87
wolfSSL 7:481bce714567 88 md2->count = 0;
wolfSSL 7:481bce714567 89 XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
wolfSSL 7:481bce714567 90 t = md2->C[15];
wolfSSL 7:481bce714567 91
wolfSSL 7:481bce714567 92 for(i = 0; i < MD2_PAD_SIZE; i++) {
wolfSSL 7:481bce714567 93 md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
wolfSSL 7:481bce714567 94 t = md2->C[i] ^= S[md2->buffer[i] ^ t];
wolfSSL 7:481bce714567 95 }
wolfSSL 7:481bce714567 96
wolfSSL 7:481bce714567 97 t=0;
wolfSSL 7:481bce714567 98 for(i = 0; i < 18; i++) {
wolfSSL 7:481bce714567 99 int j;
wolfSSL 7:481bce714567 100 for(j = 0; j < MD2_X_SIZE; j += 8) {
wolfSSL 7:481bce714567 101 t = md2->X[j+0] ^= S[t];
wolfSSL 7:481bce714567 102 t = md2->X[j+1] ^= S[t];
wolfSSL 7:481bce714567 103 t = md2->X[j+2] ^= S[t];
wolfSSL 7:481bce714567 104 t = md2->X[j+3] ^= S[t];
wolfSSL 7:481bce714567 105 t = md2->X[j+4] ^= S[t];
wolfSSL 7:481bce714567 106 t = md2->X[j+5] ^= S[t];
wolfSSL 7:481bce714567 107 t = md2->X[j+6] ^= S[t];
wolfSSL 7:481bce714567 108 t = md2->X[j+7] ^= S[t];
wolfSSL 7:481bce714567 109 }
wolfSSL 7:481bce714567 110 t = (t + i) & 0xFF;
wolfSSL 7:481bce714567 111 }
wolfSSL 7:481bce714567 112 }
wolfSSL 7:481bce714567 113 }
wolfSSL 7:481bce714567 114 }
wolfSSL 7:481bce714567 115
wolfSSL 7:481bce714567 116
wolfSSL 7:481bce714567 117 void wc_Md2Final(Md2* md2, byte* hash)
wolfSSL 7:481bce714567 118 {
wolfSSL 7:481bce714567 119 byte padding[MD2_BLOCK_SIZE];
wolfSSL 7:481bce714567 120 word32 padLen = MD2_PAD_SIZE - md2->count;
wolfSSL 7:481bce714567 121 word32 i;
wolfSSL 7:481bce714567 122
wolfSSL 7:481bce714567 123 for (i = 0; i < padLen; i++)
wolfSSL 7:481bce714567 124 padding[i] = (byte)padLen;
wolfSSL 7:481bce714567 125
wolfSSL 7:481bce714567 126 wc_Md2Update(md2, padding, padLen);
wolfSSL 7:481bce714567 127 wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
wolfSSL 7:481bce714567 128
wolfSSL 7:481bce714567 129 XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
wolfSSL 7:481bce714567 130
wolfSSL 7:481bce714567 131 wc_InitMd2(md2);
wolfSSL 7:481bce714567 132 }
wolfSSL 7:481bce714567 133
wolfSSL 7:481bce714567 134
wolfSSL 7:481bce714567 135 int wc_Md2Hash(const byte* data, word32 len, byte* hash)
wolfSSL 7:481bce714567 136 {
wolfSSL 7:481bce714567 137 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 7:481bce714567 138 Md2* md2;
wolfSSL 7:481bce714567 139 #else
wolfSSL 7:481bce714567 140 Md2 md2[1];
wolfSSL 7:481bce714567 141 #endif
wolfSSL 7:481bce714567 142
wolfSSL 7:481bce714567 143 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 7:481bce714567 144 md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 7:481bce714567 145 if (md2 == NULL)
wolfSSL 7:481bce714567 146 return MEMORY_E;
wolfSSL 7:481bce714567 147 #endif
wolfSSL 7:481bce714567 148
wolfSSL 7:481bce714567 149 wc_InitMd2(md2);
wolfSSL 7:481bce714567 150 wc_Md2Update(md2, data, len);
wolfSSL 7:481bce714567 151 wc_Md2Final(md2, hash);
wolfSSL 7:481bce714567 152
wolfSSL 7:481bce714567 153 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 7:481bce714567 154 XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 7:481bce714567 155 #endif
wolfSSL 7:481bce714567 156
wolfSSL 7:481bce714567 157 return 0;
wolfSSL 7:481bce714567 158 }
wolfSSL 7:481bce714567 159
wolfSSL 7:481bce714567 160
wolfSSL 7:481bce714567 161 #endif /* WOLFSSL_MD2 */
wolfSSL 7:481bce714567 162
wolfSSL 7:481bce714567 163