Fork of CyaSSL for my specific settings
Fork of CyaSSL by
ctaocrypt/src/md5.c
- Committer:
- wolfSSL
- Date:
- 2014-07-12
- Revision:
- 0:1239e9b70ca2
File content as of revision 0:1239e9b70ca2:
/* md5.c * * Copyright (C) 2006-2014 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <cyassl/ctaocrypt/settings.h> #if !defined(NO_MD5) #ifdef CYASSL_PIC32MZ_HASH #define InitMd5 InitMd5_sw #define Md5Update Md5Update_sw #define Md5Final Md5Final_sw #endif #include <cyassl/ctaocrypt/md5.h> #ifdef NO_INLINE #include <cyassl/ctaocrypt/misc.h> #else #include <ctaocrypt/src/misc.c> #endif #ifdef FREESCALE_MMCAU #include "cau_api.h" #define XTRANSFORM(S,B) cau_md5_hash_n((B), 1, (unsigned char*)(S)->digest) #else #define XTRANSFORM(S,B) Transform((S)) #endif #ifdef STM32F2_HASH /* * STM32F2 hardware MD5 support through the STM32F2 standard peripheral * library. Documentation located in STM32F2xx Standard Peripheral Library * document (See note in README). */ #include "stm32f2xx.h" void InitMd5(Md5* md5) { /* STM32F2 struct notes: * md5->buffer = first 4 bytes used to hold partial block if needed * md5->buffLen = num bytes currently stored in md5->buffer * md5->loLen = num bytes that have been written to STM32 FIFO */ XMEMSET(md5->buffer, 0, MD5_REG_SIZE); md5->buffLen = 0; md5->loLen = 0; /* initialize HASH peripheral */ HASH_DeInit(); /* configure algo used, algo mode, datatype */ HASH->CR &= ~ (HASH_CR_ALGO | HASH_CR_DATATYPE | HASH_CR_MODE); HASH->CR |= (HASH_AlgoSelection_MD5 | HASH_AlgoMode_HASH | HASH_DataType_8b); /* reset HASH processor */ HASH->CR |= HASH_CR_INIT; } void Md5Update(Md5* md5, const byte* data, word32 len) { word32 i = 0; word32 fill = 0; word32 diff = 0; /* if saved partial block is available */ if (md5->buffLen > 0) { fill = 4 - md5->buffLen; /* if enough data to fill, fill and push to FIFO */ if (fill <= len) { XMEMCPY((byte*)md5->buffer + md5->buffLen, data, fill); HASH_DataIn(*(uint32_t*)md5->buffer); data += fill; len -= fill; md5->loLen += 4; md5->buffLen = 0; } else { /* append partial to existing stored block */ XMEMCPY((byte*)md5->buffer + md5->buffLen, data, len); md5->buffLen += len; return; } } /* write input block in the IN FIFO */ for (i = 0; i < len; i += 4) { diff = len - i; if (diff < 4) { /* store incomplete last block, not yet in FIFO */ XMEMSET(md5->buffer, 0, MD5_REG_SIZE); XMEMCPY((byte*)md5->buffer, data, diff); md5->buffLen = diff; } else { HASH_DataIn(*(uint32_t*)data); data+=4; } } /* keep track of total data length thus far */ md5->loLen += (len - md5->buffLen); } void Md5Final(Md5* md5, byte* hash) { __IO uint16_t nbvalidbitsdata = 0; /* finish reading any trailing bytes into FIFO */ if (md5->buffLen > 0) { HASH_DataIn(*(uint32_t*)md5->buffer); md5->loLen += md5->buffLen; } /* calculate number of valid bits in last word of input data */ nbvalidbitsdata = 8 * (md5->loLen % MD5_REG_SIZE); /* configure number of valid bits in last word of the data */ HASH_SetLastWordValidBitsNbr(nbvalidbitsdata); /* start HASH processor */ HASH_StartDigest(); /* wait until Busy flag == RESET */ while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {} /* read message digest */ md5->digest[0] = HASH->HR[0]; md5->digest[1] = HASH->HR[1]; md5->digest[2] = HASH->HR[2]; md5->digest[3] = HASH->HR[3]; ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE); XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE); InitMd5(md5); /* reset state */ } #else /* CTaoCrypt software implementation */ #ifndef min static INLINE word32 min(word32 a, word32 b) { return a > b ? b : a; } #endif /* min */ void InitMd5(Md5* md5) { md5->digest[0] = 0x67452301L; md5->digest[1] = 0xefcdab89L; md5->digest[2] = 0x98badcfeL; md5->digest[3] = 0x10325476L; md5->buffLen = 0; md5->loLen = 0; md5->hiLen = 0; } #ifndef FREESCALE_MMCAU static void Transform(Md5* md5) { #define F1(x, y, z) (z ^ (x & (y ^ z))) #define F2(x, y, z) F1(z, x, y) #define F3(x, y, z) (x ^ y ^ z) #define F4(x, y, z) (y ^ (x | ~z)) #define MD5STEP(f, w, x, y, z, data, s) \ w = rotlFixed(w + f(x, y, z) + data, s) + x /* Copy context->state[] to working vars */ word32 a = md5->digest[0]; word32 b = md5->digest[1]; word32 c = md5->digest[2]; word32 d = md5->digest[3]; MD5STEP(F1, a, b, c, d, md5->buffer[0] + 0xd76aa478, 7); MD5STEP(F1, d, a, b, c, md5->buffer[1] + 0xe8c7b756, 12); MD5STEP(F1, c, d, a, b, md5->buffer[2] + 0x242070db, 17); MD5STEP(F1, b, c, d, a, md5->buffer[3] + 0xc1bdceee, 22); MD5STEP(F1, a, b, c, d, md5->buffer[4] + 0xf57c0faf, 7); MD5STEP(F1, d, a, b, c, md5->buffer[5] + 0x4787c62a, 12); MD5STEP(F1, c, d, a, b, md5->buffer[6] + 0xa8304613, 17); MD5STEP(F1, b, c, d, a, md5->buffer[7] + 0xfd469501, 22); MD5STEP(F1, a, b, c, d, md5->buffer[8] + 0x698098d8, 7); MD5STEP(F1, d, a, b, c, md5->buffer[9] + 0x8b44f7af, 12); MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17); MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22); MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122, 7); MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12); MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17); MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22); MD5STEP(F2, a, b, c, d, md5->buffer[1] + 0xf61e2562, 5); MD5STEP(F2, d, a, b, c, md5->buffer[6] + 0xc040b340, 9); MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14); MD5STEP(F2, b, c, d, a, md5->buffer[0] + 0xe9b6c7aa, 20); MD5STEP(F2, a, b, c, d, md5->buffer[5] + 0xd62f105d, 5); MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453, 9); MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14); MD5STEP(F2, b, c, d, a, md5->buffer[4] + 0xe7d3fbc8, 20); MD5STEP(F2, a, b, c, d, md5->buffer[9] + 0x21e1cde6, 5); MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6, 9); MD5STEP(F2, c, d, a, b, md5->buffer[3] + 0xf4d50d87, 14); MD5STEP(F2, b, c, d, a, md5->buffer[8] + 0x455a14ed, 20); MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905, 5); MD5STEP(F2, d, a, b, c, md5->buffer[2] + 0xfcefa3f8, 9); MD5STEP(F2, c, d, a, b, md5->buffer[7] + 0x676f02d9, 14); MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20); MD5STEP(F3, a, b, c, d, md5->buffer[5] + 0xfffa3942, 4); MD5STEP(F3, d, a, b, c, md5->buffer[8] + 0x8771f681, 11); MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16); MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23); MD5STEP(F3, a, b, c, d, md5->buffer[1] + 0xa4beea44, 4); MD5STEP(F3, d, a, b, c, md5->buffer[4] + 0x4bdecfa9, 11); MD5STEP(F3, c, d, a, b, md5->buffer[7] + 0xf6bb4b60, 16); MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23); MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6, 4); MD5STEP(F3, d, a, b, c, md5->buffer[0] + 0xeaa127fa, 11); MD5STEP(F3, c, d, a, b, md5->buffer[3] + 0xd4ef3085, 16); MD5STEP(F3, b, c, d, a, md5->buffer[6] + 0x04881d05, 23); MD5STEP(F3, a, b, c, d, md5->buffer[9] + 0xd9d4d039, 4); MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11); MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16); MD5STEP(F3, b, c, d, a, md5->buffer[2] + 0xc4ac5665, 23); MD5STEP(F4, a, b, c, d, md5->buffer[0] + 0xf4292244, 6); MD5STEP(F4, d, a, b, c, md5->buffer[7] + 0x432aff97, 10); MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15); MD5STEP(F4, b, c, d, a, md5->buffer[5] + 0xfc93a039, 21); MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3, 6); MD5STEP(F4, d, a, b, c, md5->buffer[3] + 0x8f0ccc92, 10); MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15); MD5STEP(F4, b, c, d, a, md5->buffer[1] + 0x85845dd1, 21); MD5STEP(F4, a, b, c, d, md5->buffer[8] + 0x6fa87e4f, 6); MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10); MD5STEP(F4, c, d, a, b, md5->buffer[6] + 0xa3014314, 15); MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21); MD5STEP(F4, a, b, c, d, md5->buffer[4] + 0xf7537e82, 6); MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10); MD5STEP(F4, c, d, a, b, md5->buffer[2] + 0x2ad7d2bb, 15); MD5STEP(F4, b, c, d, a, md5->buffer[9] + 0xeb86d391, 21); /* Add the working vars back into digest state[] */ md5->digest[0] += a; md5->digest[1] += b; md5->digest[2] += c; md5->digest[3] += d; } #endif /* FREESCALE_MMCAU */ static INLINE void AddLength(Md5* md5, word32 len) { word32 tmp = md5->loLen; if ( (md5->loLen += len) < tmp) md5->hiLen++; /* carry low to high */ } void Md5Update(Md5* md5, const byte* data, word32 len) { /* do block size increments */ byte* local = (byte*)md5->buffer; while (len) { word32 add = min(len, MD5_BLOCK_SIZE - md5->buffLen); XMEMCPY(&local[md5->buffLen], data, add); md5->buffLen += add; data += add; len -= add; if (md5->buffLen == MD5_BLOCK_SIZE) { #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU) ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE); #endif XTRANSFORM(md5, local); AddLength(md5, MD5_BLOCK_SIZE); md5->buffLen = 0; } } } void Md5Final(Md5* md5, byte* hash) { byte* local = (byte*)md5->buffer; AddLength(md5, md5->buffLen); /* before adding pads */ local[md5->buffLen++] = 0x80; /* add 1 */ /* pad with zeros */ if (md5->buffLen > MD5_PAD_SIZE) { XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen); md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen; #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU) ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE); #endif XTRANSFORM(md5, local); md5->buffLen = 0; } XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen); /* put lengths in bits */ md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) + (md5->hiLen << 3); md5->loLen = md5->loLen << 3; /* store lengths */ #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU) ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE); #endif /* ! length ordering dependent on digest endian type ! */ XMEMCPY(&local[MD5_PAD_SIZE], &md5->loLen, sizeof(word32)); XMEMCPY(&local[MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32)); XTRANSFORM(md5, local); #ifdef BIG_ENDIAN_ORDER ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE); #endif XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE); InitMd5(md5); /* reset state */ } #endif /* STM32F2_HASH */ #endif /* NO_MD5 */