wolf SSL / wolfSSL

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

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wolfcrypt/src/md2.c@13:f67a6c6013ca, 2017-08-22 (annotated)

Committer:
wolfSSL
Date:
Tue Aug 22 10:48:22 2017 +0000
Revision:
13:f67a6c6013ca
Parent:
11:cee25a834751 
wolfSSL3.12.0 with TLS1.3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 11:cee25a834751 1 /* md2.c
wolfSSL 11:cee25a834751 2 *
wolfSSL 11:cee25a834751 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 11:cee25a834751 4 *
wolfSSL 11:cee25a834751 5 * This file is part of wolfSSL.
wolfSSL 11:cee25a834751 6 *
wolfSSL 11:cee25a834751 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 11:cee25a834751 8 * it under the terms of the GNU General Public License as published by
wolfSSL 11:cee25a834751 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 11:cee25a834751 10 * (at your option) any later version.
wolfSSL 11:cee25a834751 11 *
wolfSSL 11:cee25a834751 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 11:cee25a834751 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 11:cee25a834751 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 11:cee25a834751 15 * GNU General Public License for more details.
wolfSSL 11:cee25a834751 16 *
wolfSSL 11:cee25a834751 17 * You should have received a copy of the GNU General Public License
wolfSSL 11:cee25a834751 18 * along with this program; if not, write to the Free Software
wolfSSL 11:cee25a834751 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 11:cee25a834751 20 */
wolfSSL 11:cee25a834751 21
wolfSSL 11:cee25a834751 22
wolfSSL 11:cee25a834751 23
wolfSSL 11:cee25a834751 24 #ifdef HAVE_CONFIG_H
wolfSSL 11:cee25a834751 25 #include <config.h>
wolfSSL 11:cee25a834751 26 #endif
wolfSSL 11:cee25a834751 27
wolfSSL 11:cee25a834751 28 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 11:cee25a834751 29
wolfSSL 11:cee25a834751 30 #ifdef WOLFSSL_MD2
wolfSSL 11:cee25a834751 31
wolfSSL 11:cee25a834751 32 #include <wolfssl/wolfcrypt/md2.h>
wolfSSL 11:cee25a834751 33 #include <wolfssl/wolfcrypt/error-crypt.h>
wolfSSL 11:cee25a834751 34
wolfSSL 11:cee25a834751 35 #ifdef NO_INLINE
wolfSSL 11:cee25a834751 36 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 11:cee25a834751 37 #else
wolfSSL 11:cee25a834751 38 #define WOLFSSL_MISC_INCLUDED
wolfSSL 11:cee25a834751 39 #include <wolfcrypt/src/misc.c>
wolfSSL 11:cee25a834751 40 #endif
wolfSSL 11:cee25a834751 41
wolfSSL 11:cee25a834751 42
wolfSSL 11:cee25a834751 43 void wc_InitMd2(Md2* md2)
wolfSSL 11:cee25a834751 44 {
wolfSSL 11:cee25a834751 45 XMEMSET(md2->X, 0, MD2_X_SIZE);
wolfSSL 11:cee25a834751 46 XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
wolfSSL 11:cee25a834751 47 XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
wolfSSL 11:cee25a834751 48 md2->count = 0;
wolfSSL 11:cee25a834751 49 }
wolfSSL 11:cee25a834751 50
wolfSSL 11:cee25a834751 51
wolfSSL 11:cee25a834751 52 void wc_Md2Update(Md2* md2, const byte* data, word32 len)
wolfSSL 11:cee25a834751 53 {
wolfSSL 11:cee25a834751 54 static const byte S[256] =
wolfSSL 11:cee25a834751 55 {
wolfSSL 11:cee25a834751 56 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
wolfSSL 11:cee25a834751 57 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
wolfSSL 11:cee25a834751 58 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
wolfSSL 11:cee25a834751 59 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
wolfSSL 11:cee25a834751 60 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
wolfSSL 11:cee25a834751 61 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
wolfSSL 11:cee25a834751 62 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
wolfSSL 11:cee25a834751 63 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
wolfSSL 11:cee25a834751 64 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
wolfSSL 11:cee25a834751 65 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
wolfSSL 11:cee25a834751 66 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
wolfSSL 11:cee25a834751 67 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
wolfSSL 11:cee25a834751 68 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
wolfSSL 11:cee25a834751 69 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
wolfSSL 11:cee25a834751 70 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
wolfSSL 11:cee25a834751 71 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
wolfSSL 11:cee25a834751 72 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
wolfSSL 11:cee25a834751 73 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
wolfSSL 11:cee25a834751 74 };
wolfSSL 11:cee25a834751 75
wolfSSL 11:cee25a834751 76 while (len) {
wolfSSL 11:cee25a834751 77 word32 L = (MD2_PAD_SIZE - md2->count) < len ?
wolfSSL 11:cee25a834751 78 (MD2_PAD_SIZE - md2->count) : len;
wolfSSL 11:cee25a834751 79 XMEMCPY(md2->buffer + md2->count, data, L);
wolfSSL 11:cee25a834751 80 md2->count += L;
wolfSSL 11:cee25a834751 81 data += L;
wolfSSL 11:cee25a834751 82 len -= L;
wolfSSL 11:cee25a834751 83
wolfSSL 11:cee25a834751 84 if (md2->count == MD2_PAD_SIZE) {
wolfSSL 11:cee25a834751 85 int i;
wolfSSL 11:cee25a834751 86 byte t;
wolfSSL 11:cee25a834751 87
wolfSSL 11:cee25a834751 88 md2->count = 0;
wolfSSL 11:cee25a834751 89 XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
wolfSSL 11:cee25a834751 90 t = md2->C[15];
wolfSSL 11:cee25a834751 91
wolfSSL 11:cee25a834751 92 for(i = 0; i < MD2_PAD_SIZE; i++) {
wolfSSL 11:cee25a834751 93 md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
wolfSSL 11:cee25a834751 94 t = md2->C[i] ^= S[md2->buffer[i] ^ t];
wolfSSL 11:cee25a834751 95 }
wolfSSL 11:cee25a834751 96
wolfSSL 11:cee25a834751 97 t=0;
wolfSSL 11:cee25a834751 98 for(i = 0; i < 18; i++) {
wolfSSL 11:cee25a834751 99 int j;
wolfSSL 11:cee25a834751 100 for(j = 0; j < MD2_X_SIZE; j += 8) {
wolfSSL 11:cee25a834751 101 t = md2->X[j+0] ^= S[t];
wolfSSL 11:cee25a834751 102 t = md2->X[j+1] ^= S[t];
wolfSSL 11:cee25a834751 103 t = md2->X[j+2] ^= S[t];
wolfSSL 11:cee25a834751 104 t = md2->X[j+3] ^= S[t];
wolfSSL 11:cee25a834751 105 t = md2->X[j+4] ^= S[t];
wolfSSL 11:cee25a834751 106 t = md2->X[j+5] ^= S[t];
wolfSSL 11:cee25a834751 107 t = md2->X[j+6] ^= S[t];
wolfSSL 11:cee25a834751 108 t = md2->X[j+7] ^= S[t];
wolfSSL 11:cee25a834751 109 }
wolfSSL 11:cee25a834751 110 t = (t + i) & 0xFF;
wolfSSL 11:cee25a834751 111 }
wolfSSL 11:cee25a834751 112 }
wolfSSL 11:cee25a834751 113 }
wolfSSL 11:cee25a834751 114 }
wolfSSL 11:cee25a834751 115
wolfSSL 11:cee25a834751 116
wolfSSL 11:cee25a834751 117 void wc_Md2Final(Md2* md2, byte* hash)
wolfSSL 11:cee25a834751 118 {
wolfSSL 11:cee25a834751 119 byte padding[MD2_BLOCK_SIZE];
wolfSSL 11:cee25a834751 120 word32 padLen = MD2_PAD_SIZE - md2->count;
wolfSSL 11:cee25a834751 121 word32 i;
wolfSSL 11:cee25a834751 122
wolfSSL 11:cee25a834751 123 for (i = 0; i < padLen; i++)
wolfSSL 11:cee25a834751 124 padding[i] = (byte)padLen;
wolfSSL 11:cee25a834751 125
wolfSSL 11:cee25a834751 126 wc_Md2Update(md2, padding, padLen);
wolfSSL 11:cee25a834751 127 wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
wolfSSL 11:cee25a834751 128
wolfSSL 11:cee25a834751 129 XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
wolfSSL 11:cee25a834751 130
wolfSSL 11:cee25a834751 131 wc_InitMd2(md2);
wolfSSL 11:cee25a834751 132 }
wolfSSL 11:cee25a834751 133
wolfSSL 11:cee25a834751 134
wolfSSL 11:cee25a834751 135 int wc_Md2Hash(const byte* data, word32 len, byte* hash)
wolfSSL 11:cee25a834751 136 {
wolfSSL 11:cee25a834751 137 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 138 Md2* md2;
wolfSSL 11:cee25a834751 139 #else
wolfSSL 11:cee25a834751 140 Md2 md2[1];
wolfSSL 11:cee25a834751 141 #endif
wolfSSL 11:cee25a834751 142
wolfSSL 11:cee25a834751 143 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 144 md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 145 if (md2 == NULL)
wolfSSL 11:cee25a834751 146 return MEMORY_E;
wolfSSL 11:cee25a834751 147 #endif
wolfSSL 11:cee25a834751 148
wolfSSL 11:cee25a834751 149 wc_InitMd2(md2);
wolfSSL 11:cee25a834751 150 wc_Md2Update(md2, data, len);
wolfSSL 11:cee25a834751 151 wc_Md2Final(md2, hash);
wolfSSL 11:cee25a834751 152
wolfSSL 11:cee25a834751 153 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 11:cee25a834751 154 XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 11:cee25a834751 155 #endif
wolfSSL 11:cee25a834751 156
wolfSSL 11:cee25a834751 157 return 0;
wolfSSL 11:cee25a834751 158 }
wolfSSL 11:cee25a834751 159
wolfSSL 11:cee25a834751 160
wolfSSL 11:cee25a834751 161 #endif /* WOLFSSL_MD2 */
wolfSSL 11:cee25a834751 162
wolfSSL 11:cee25a834751 163