wolf SSL / wolfSSL

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

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wolfcrypt/src/md2.c@17:a5f916481144, 2020-06-05 (annotated)

Committer:
wolfSSL
Date:
Fri Jun 05 00:11:07 2020 +0000
Revision:
17:a5f916481144
Parent:
16:8e0d178b1d1e 
wolfSSL 4.4.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 15:117db924cf7c 1 /* md2.c
wolfSSL 15:117db924cf7c 2 *
wolfSSL 16:8e0d178b1d1e 3 * Copyright (C) 2006-2020 wolfSSL Inc.
wolfSSL 15:117db924cf7c 4 *
wolfSSL 15:117db924cf7c 5 * This file is part of wolfSSL.
wolfSSL 15:117db924cf7c 6 *
wolfSSL 15:117db924cf7c 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 15:117db924cf7c 8 * it under the terms of the GNU General Public License as published by
wolfSSL 15:117db924cf7c 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 15:117db924cf7c 10 * (at your option) any later version.
wolfSSL 15:117db924cf7c 11 *
wolfSSL 15:117db924cf7c 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 15:117db924cf7c 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 15:117db924cf7c 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 15:117db924cf7c 15 * GNU General Public License for more details.
wolfSSL 15:117db924cf7c 16 *
wolfSSL 15:117db924cf7c 17 * You should have received a copy of the GNU General Public License
wolfSSL 15:117db924cf7c 18 * along with this program; if not, write to the Free Software
wolfSSL 15:117db924cf7c 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 15:117db924cf7c 20 */
wolfSSL 15:117db924cf7c 21
wolfSSL 15:117db924cf7c 22
wolfSSL 15:117db924cf7c 23
wolfSSL 15:117db924cf7c 24 #ifdef HAVE_CONFIG_H
wolfSSL 15:117db924cf7c 25 #include <config.h>
wolfSSL 15:117db924cf7c 26 #endif
wolfSSL 15:117db924cf7c 27
wolfSSL 15:117db924cf7c 28 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 15:117db924cf7c 29
wolfSSL 15:117db924cf7c 30 #ifdef WOLFSSL_MD2
wolfSSL 15:117db924cf7c 31
wolfSSL 15:117db924cf7c 32 #include <wolfssl/wolfcrypt/md2.h>
wolfSSL 15:117db924cf7c 33 #include <wolfssl/wolfcrypt/error-crypt.h>
wolfSSL 15:117db924cf7c 34
wolfSSL 15:117db924cf7c 35 #ifdef NO_INLINE
wolfSSL 15:117db924cf7c 36 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 15:117db924cf7c 37 #else
wolfSSL 15:117db924cf7c 38 #define WOLFSSL_MISC_INCLUDED
wolfSSL 15:117db924cf7c 39 #include <wolfcrypt/src/misc.c>
wolfSSL 15:117db924cf7c 40 #endif
wolfSSL 15:117db924cf7c 41
wolfSSL 15:117db924cf7c 42
wolfSSL 15:117db924cf7c 43 void wc_InitMd2(Md2* md2)
wolfSSL 15:117db924cf7c 44 {
wolfSSL 15:117db924cf7c 45 XMEMSET(md2->X, 0, MD2_X_SIZE);
wolfSSL 15:117db924cf7c 46 XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
wolfSSL 15:117db924cf7c 47 XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
wolfSSL 15:117db924cf7c 48 md2->count = 0;
wolfSSL 15:117db924cf7c 49 }
wolfSSL 15:117db924cf7c 50
wolfSSL 15:117db924cf7c 51
wolfSSL 15:117db924cf7c 52 void wc_Md2Update(Md2* md2, const byte* data, word32 len)
wolfSSL 15:117db924cf7c 53 {
wolfSSL 15:117db924cf7c 54 static const byte S[256] =
wolfSSL 15:117db924cf7c 55 {
wolfSSL 15:117db924cf7c 56 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
wolfSSL 15:117db924cf7c 57 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
wolfSSL 15:117db924cf7c 58 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
wolfSSL 15:117db924cf7c 59 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
wolfSSL 15:117db924cf7c 60 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
wolfSSL 15:117db924cf7c 61 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
wolfSSL 15:117db924cf7c 62 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
wolfSSL 15:117db924cf7c 63 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
wolfSSL 15:117db924cf7c 64 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
wolfSSL 15:117db924cf7c 65 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
wolfSSL 15:117db924cf7c 66 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
wolfSSL 15:117db924cf7c 67 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
wolfSSL 15:117db924cf7c 68 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
wolfSSL 15:117db924cf7c 69 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
wolfSSL 15:117db924cf7c 70 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
wolfSSL 15:117db924cf7c 71 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
wolfSSL 15:117db924cf7c 72 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
wolfSSL 15:117db924cf7c 73 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
wolfSSL 15:117db924cf7c 74 };
wolfSSL 15:117db924cf7c 75
wolfSSL 15:117db924cf7c 76 while (len) {
wolfSSL 15:117db924cf7c 77 word32 L = (MD2_PAD_SIZE - md2->count) < len ?
wolfSSL 15:117db924cf7c 78 (MD2_PAD_SIZE - md2->count) : len;
wolfSSL 15:117db924cf7c 79 XMEMCPY(md2->buffer + md2->count, data, L);
wolfSSL 15:117db924cf7c 80 md2->count += L;
wolfSSL 15:117db924cf7c 81 data += L;
wolfSSL 15:117db924cf7c 82 len -= L;
wolfSSL 15:117db924cf7c 83
wolfSSL 15:117db924cf7c 84 if (md2->count == MD2_PAD_SIZE) {
wolfSSL 15:117db924cf7c 85 int i;
wolfSSL 15:117db924cf7c 86 byte t;
wolfSSL 15:117db924cf7c 87
wolfSSL 15:117db924cf7c 88 md2->count = 0;
wolfSSL 15:117db924cf7c 89 XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
wolfSSL 15:117db924cf7c 90 t = md2->C[15];
wolfSSL 15:117db924cf7c 91
wolfSSL 15:117db924cf7c 92 for(i = 0; i < MD2_PAD_SIZE; i++) {
wolfSSL 15:117db924cf7c 93 md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
wolfSSL 15:117db924cf7c 94 t = md2->C[i] ^= S[md2->buffer[i] ^ t];
wolfSSL 15:117db924cf7c 95 }
wolfSSL 15:117db924cf7c 96
wolfSSL 15:117db924cf7c 97 t=0;
wolfSSL 15:117db924cf7c 98 for(i = 0; i < 18; i++) {
wolfSSL 15:117db924cf7c 99 int j;
wolfSSL 15:117db924cf7c 100 for(j = 0; j < MD2_X_SIZE; j += 8) {
wolfSSL 15:117db924cf7c 101 t = md2->X[j+0] ^= S[t];
wolfSSL 15:117db924cf7c 102 t = md2->X[j+1] ^= S[t];
wolfSSL 15:117db924cf7c 103 t = md2->X[j+2] ^= S[t];
wolfSSL 15:117db924cf7c 104 t = md2->X[j+3] ^= S[t];
wolfSSL 15:117db924cf7c 105 t = md2->X[j+4] ^= S[t];
wolfSSL 15:117db924cf7c 106 t = md2->X[j+5] ^= S[t];
wolfSSL 15:117db924cf7c 107 t = md2->X[j+6] ^= S[t];
wolfSSL 15:117db924cf7c 108 t = md2->X[j+7] ^= S[t];
wolfSSL 15:117db924cf7c 109 }
wolfSSL 15:117db924cf7c 110 t = (t + i) & 0xFF;
wolfSSL 15:117db924cf7c 111 }
wolfSSL 15:117db924cf7c 112 }
wolfSSL 15:117db924cf7c 113 }
wolfSSL 15:117db924cf7c 114 }
wolfSSL 15:117db924cf7c 115
wolfSSL 15:117db924cf7c 116
wolfSSL 15:117db924cf7c 117 void wc_Md2Final(Md2* md2, byte* hash)
wolfSSL 15:117db924cf7c 118 {
wolfSSL 15:117db924cf7c 119 byte padding[MD2_BLOCK_SIZE];
wolfSSL 15:117db924cf7c 120 word32 padLen = MD2_PAD_SIZE - md2->count;
wolfSSL 15:117db924cf7c 121 word32 i;
wolfSSL 15:117db924cf7c 122
wolfSSL 15:117db924cf7c 123 for (i = 0; i < padLen; i++)
wolfSSL 15:117db924cf7c 124 padding[i] = (byte)padLen;
wolfSSL 15:117db924cf7c 125
wolfSSL 15:117db924cf7c 126 wc_Md2Update(md2, padding, padLen);
wolfSSL 15:117db924cf7c 127 wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
wolfSSL 15:117db924cf7c 128
wolfSSL 15:117db924cf7c 129 XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
wolfSSL 15:117db924cf7c 130
wolfSSL 15:117db924cf7c 131 wc_InitMd2(md2);
wolfSSL 15:117db924cf7c 132 }
wolfSSL 15:117db924cf7c 133
wolfSSL 15:117db924cf7c 134
wolfSSL 15:117db924cf7c 135 int wc_Md2Hash(const byte* data, word32 len, byte* hash)
wolfSSL 15:117db924cf7c 136 {
wolfSSL 15:117db924cf7c 137 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 15:117db924cf7c 138 Md2* md2;
wolfSSL 15:117db924cf7c 139 #else
wolfSSL 15:117db924cf7c 140 Md2 md2[1];
wolfSSL 15:117db924cf7c 141 #endif
wolfSSL 15:117db924cf7c 142
wolfSSL 15:117db924cf7c 143 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 15:117db924cf7c 144 md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 15:117db924cf7c 145 if (md2 == NULL)
wolfSSL 15:117db924cf7c 146 return MEMORY_E;
wolfSSL 15:117db924cf7c 147 #endif
wolfSSL 15:117db924cf7c 148
wolfSSL 15:117db924cf7c 149 wc_InitMd2(md2);
wolfSSL 15:117db924cf7c 150 wc_Md2Update(md2, data, len);
wolfSSL 15:117db924cf7c 151 wc_Md2Final(md2, hash);
wolfSSL 15:117db924cf7c 152
wolfSSL 15:117db924cf7c 153 #ifdef WOLFSSL_SMALL_STACK
wolfSSL 15:117db924cf7c 154 XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER);
wolfSSL 15:117db924cf7c 155 #endif
wolfSSL 15:117db924cf7c 156
wolfSSL 15:117db924cf7c 157 return 0;
wolfSSL 15:117db924cf7c 158 }
wolfSSL 15:117db924cf7c 159
wolfSSL 15:117db924cf7c 160
wolfSSL 15:117db924cf7c 161 #endif /* WOLFSSL_MD2 */
wolfSSL 15:117db924cf7c 162
wolfSSL 15:117db924cf7c 163