SSL/TLS Library
CyaSSL is SSL/TLS library for embedded systems.
Diff: ctaocrypt/src/md2.c
- Revision:
- 0:9d17e4342598
diff -r 000000000000 -r 9d17e4342598 ctaocrypt/src/md2.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ctaocrypt/src/md2.c Sun Apr 20 12:40:57 2014 +0000 @@ -0,0 +1,131 @@ +/* md2.c + * + * Copyright (C) 2006-2013 wolfSSL Inc. + * + * This file is part of CyaSSL. + * + * CyaSSL 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. + * + * CyaSSL 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + + +#ifdef HAVE_CONFIG_H + #include <config.h> +#endif + +#include <cyassl/ctaocrypt/settings.h> + +#ifdef CYASSL_MD2 + +#include <cyassl/ctaocrypt/md2.h> +#ifdef NO_INLINE + #include <cyassl/ctaocrypt/misc.h> +#else + #include <ctaocrypt/src/misc.c> +#endif + + +void 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 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 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; + + Md2Update(md2, padding, padLen); + Md2Update(md2, md2->C, MD2_BLOCK_SIZE); + + XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE); + + InitMd2(md2); +} + + +#endif /* CYASSL_MD2 */