/* md5.c
*
- * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
+ * Copyright (C) 2006-2014 wolfSSL Inc.
*
* This file is part of CyaSSL.
*
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#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>
+#include <cyassl/ctaocrypt/error-crypt.h>
#ifdef NO_INLINE
#include <cyassl/ctaocrypt/misc.h>
#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
md5->hiLen = 0;
}
+#ifndef FREESCALE_MMCAU
static void Transform(Md5* md5)
{
md5->digest[3] += d;
}
+#endif /* FREESCALE_MMCAU */
+
static INLINE void AddLength(Md5* md5, word32 len)
{
len -= add;
if (md5->buffLen == MD5_BLOCK_SIZE) {
- #ifdef BIG_ENDIAN_ORDER
- ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
+ #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
+ ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
#endif
- Transform(md5);
+ XTRANSFORM(md5, local);
AddLength(md5, MD5_BLOCK_SIZE);
md5->buffLen = 0;
}
{
byte* local = (byte*)md5->buffer;
- AddLength(md5, md5->buffLen); /* before adding pads */
+ AddLength(md5, md5->buffLen); /* before adding pads */
local[md5->buffLen++] = 0x80; /* add 1 */
XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen);
md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen;
- #ifdef BIG_ENDIAN_ORDER
- ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
+ #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
+ ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
#endif
- Transform(md5);
+ XTRANSFORM(md5, local);
md5->buffLen = 0;
}
XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen);
md5->loLen = md5->loLen << 3;
/* store lengths */
- #ifdef BIG_ENDIAN_ORDER
- ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
+ #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));
- Transform(md5);
+ XTRANSFORM(md5, local);
#ifdef BIG_ENDIAN_ORDER
ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
#endif
InitMd5(md5); /* reset state */
}
+#endif /* STM32F2_HASH */
+
+
+int Md5Hash(const byte* data, word32 len, byte* hash)
+{
+#ifdef CYASSL_SMALL_STACK
+ Md5* md5;
+#else
+ Md5 md5[1];
+#endif
+
+#ifdef CYASSL_SMALL_STACK
+ md5 = (Md5*)XMALLOC(sizeof(Md5), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (md5 == NULL)
+ return MEMORY_E;
+#endif
+
+ InitMd5(md5);
+ Md5Update(md5, data, len);
+ Md5Final(md5, hash);
+
+#ifdef CYASSL_SMALL_STACK
+ XFREE(md5, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return 0;
+}
+
+#endif /* NO_MD5 */
projects / freertos / blobdiff