| /* md2.c |
| * |
| * Copyright (C) 2006-2015 wolfSSL Inc. |
| * |
| * This file is part of wolfSSL. (formerly known as CyaSSL) |
| * |
| * wolfSSL is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * wolfSSL is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <wolfssl/wolfcrypt/settings.h> |
| |
| #ifdef WOLFSSL_MD2 |
| |
| #include <wolfssl/wolfcrypt/md2.h> |
| #include <wolfssl/wolfcrypt/error-crypt.h> |
| |
| #ifdef NO_INLINE |
| #include <wolfssl/wolfcrypt/misc.h> |
| #else |
| #include <wolfcrypt/src/misc.c> |
| #endif |
| |
| |
| void wc_InitMd2(Md2* md2) |
| { |
| XMEMSET(md2->X, 0, MD2_X_SIZE); |
| XMEMSET(md2->C, 0, MD2_BLOCK_SIZE); |
| XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE); |
| md2->count = 0; |
| } |
| |
| |
| void wc_Md2Update(Md2* md2, const byte* data, word32 len) |
| { |
| static const byte S[256] = |
| { |
| 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, |
| 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, |
| 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, |
| 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, |
| 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63, |
| 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50, |
| 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165, |
| 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210, |
| 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157, |
| 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27, |
| 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15, |
| 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, |
| 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65, |
| 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123, |
| 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233, |
| 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228, |
| 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237, |
| 31, 26, 219, 153, 141, 51, 159, 17, 131, 20 |
| }; |
| |
| while (len) { |
| word32 L = (MD2_PAD_SIZE - md2->count) < len ? |
| (MD2_PAD_SIZE - md2->count) : len; |
| XMEMCPY(md2->buffer + md2->count, data, L); |
| md2->count += L; |
| data += L; |
| len -= L; |
| |
| if (md2->count == MD2_PAD_SIZE) { |
| int i; |
| byte t; |
| |
| md2->count = 0; |
| XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE); |
| t = md2->C[15]; |
| |
| for(i = 0; i < MD2_PAD_SIZE; i++) { |
| md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i]; |
| t = md2->C[i] ^= S[md2->buffer[i] ^ t]; |
| } |
| |
| t=0; |
| for(i = 0; i < 18; i++) { |
| int j; |
| for(j = 0; j < MD2_X_SIZE; j += 8) { |
| t = md2->X[j+0] ^= S[t]; |
| t = md2->X[j+1] ^= S[t]; |
| t = md2->X[j+2] ^= S[t]; |
| t = md2->X[j+3] ^= S[t]; |
| t = md2->X[j+4] ^= S[t]; |
| t = md2->X[j+5] ^= S[t]; |
| t = md2->X[j+6] ^= S[t]; |
| t = md2->X[j+7] ^= S[t]; |
| } |
| t = (t + i) & 0xFF; |
| } |
| } |
| } |
| } |
| |
| |
| void wc_Md2Final(Md2* md2, byte* hash) |
| { |
| byte padding[MD2_BLOCK_SIZE]; |
| word32 padLen = MD2_PAD_SIZE - md2->count; |
| word32 i; |
| |
| for (i = 0; i < padLen; i++) |
| padding[i] = (byte)padLen; |
| |
| wc_Md2Update(md2, padding, padLen); |
| wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE); |
| |
| XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE); |
| |
| wc_InitMd2(md2); |
| } |
| |
| |
| int wc_Md2Hash(const byte* data, word32 len, byte* hash) |
| { |
| #ifdef WOLFSSL_SMALL_STACK |
| Md2* md2; |
| #else |
| Md2 md2[1]; |
| #endif |
| |
| #ifdef WOLFSSL_SMALL_STACK |
| md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| if (md2 == NULL) |
| return MEMORY_E; |
| #endif |
| |
| wc_InitMd2(md2); |
| wc_Md2Update(md2, data, len); |
| wc_Md2Final(md2, hash); |
| |
| #ifdef WOLFSSL_SMALL_STACK |
| XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
| #endif |
| |
| return 0; |
| } |
| |
| |
| #endif /* WOLFSSL_MD2 */ |
| |