Diff: wolfcrypt/src/md5.c

Revision:

13:f67a6c6013ca

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/md5.c	Tue Aug 22 10:48:22 2017 +0000
@@ -0,0 +1,502 @@
+/* md5.c
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * 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 02110-1335, USA
+ */
+
+
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+
+#if !defined(NO_MD5)
+
+#if defined(WOLFSSL_TI_HASH)
+    /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
+
+#else
+
+#include <wolfssl/wolfcrypt/md5.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+#include <wolfssl/wolfcrypt/logging.h>
+
+#ifdef NO_INLINE
+    #include <wolfssl/wolfcrypt/misc.h>
+#else
+    #define WOLFSSL_MISC_INCLUDED
+    #include <wolfcrypt/src/misc.c>
+#endif
+
+
+/* Hardware Acceleration */
+#if defined(STM32F2_HASH) || defined(STM32F4_HASH)
+    /*
+     * STM32F2/F4 hardware MD5 support through the standard peripheral
+     * library. (See note in README).
+     */
+
+    #define HAVE_MD5_CUST_API
+
+    int wc_InitMd5_ex(Md5* md5, void* heap, int devId)
+    {
+        (void)heap;
+        (void)devId;
+
+        /* STM32 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;
+
+        return 0;
+    }
+
+    int wc_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 0;
+            }
+        }
+
+        /* 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);
+
+        return 0;
+    }
+
+    int wc_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);
+
+        return wc_InitMd5(md5);  /* reset state */
+    }
+
+#elif defined(FREESCALE_MMCAU_SHA)
+    #include "cau_api.h"
+    #define XTRANSFORM(S,B)  Transform((S), (B))
+
+    static int Transform(Md5* md5, byte* data)
+    {
+        int ret = wolfSSL_CryptHwMutexLock();
+        if(ret == 0) {
+        #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_md5_hash_n(data, 1, (unsigned char*)md5->digest);
+        #else
+            MMCAU_MD5_HashN(data, 1, (uint32_t*)md5->digest);
+        #endif
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+#elif defined(WOLFSSL_PIC32MZ_HASH)
+    #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
+    #define HAVE_MD5_CUST_API
+
+#else
+    #define NEED_SOFT_MD5
+
+#endif /* End Hardware Acceleration */
+
+
+#ifdef NEED_SOFT_MD5
+
+    #define XTRANSFORM(S,B)  Transform((S))
+
+    #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
+
+    static int Transform(Md5* md5)
+    {
+        /* 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;
+
+        return 0;
+    }
+#endif /* NEED_SOFT_MD5 */
+
+
+#ifndef HAVE_MD5_CUST_API
+static INLINE void AddMd5Length(Md5* md5, word32 len)
+{
+    word32 tmp = md5->loLen;
+    if ((md5->loLen += len) < tmp) {
+        md5->hiLen++;                       /* carry low to high */
+    }
+}
+
+static int _InitMd5(Md5* md5)
+{
+    int ret = 0;
+
+    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;
+
+    return ret;
+}
+
+int wc_InitMd5_ex(Md5* md5, void* heap, int devId)
+{
+    int ret = 0;
+
+    if (md5 == NULL)
+        return BAD_FUNC_ARG;
+
+    md5->heap = heap;
+
+    ret = _InitMd5(md5);
+    if (ret != 0)
+        return ret;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
+    ret = wolfAsync_DevCtxInit(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5,
+                                                            md5->heap, devId);
+#else
+    (void)devId;
+#endif
+    return ret;
+}
+
+int wc_Md5Update(Md5* md5, const byte* data, word32 len)
+{
+    int ret = 0;
+    byte* local;
+
+    if (md5 == NULL || (data == NULL && len > 0)) {
+        return BAD_FUNC_ARG;
+    }
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
+    if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
+    #if defined(HAVE_INTEL_QA)
+        return IntelQaSymMd5(&md5->asyncDev, NULL, data, len);
+    #endif
+    }
+#endif /* WOLFSSL_ASYNC_CRYPT */
+
+    /* do block size increments */
+    local = (byte*)md5->buffer;
+
+    /* check that internal buffLen is valid */
+    if (md5->buffLen >= MD5_BLOCK_SIZE)
+        return BUFFER_E;
+
+    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_SHA)
+            ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
+        #endif
+            XTRANSFORM(md5, local);
+            AddMd5Length(md5, MD5_BLOCK_SIZE);
+            md5->buffLen = 0;
+        }
+    }
+    return ret;
+}
+
+int wc_Md5Final(Md5* md5, byte* hash)
+{
+    byte* local;
+
+    if (md5 == NULL || hash == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
+    if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
+    #if defined(HAVE_INTEL_QA)
+        return IntelQaSymMd5(&md5->asyncDev, hash, NULL, MD5_DIGEST_SIZE);
+    #endif
+    }
+#endif /* WOLFSSL_ASYNC_CRYPT */
+
+    local = (byte*)md5->buffer;
+
+    AddMd5Length(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_SHA)
+        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);
+
+#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+    ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
+#endif
+
+    /* put lengths in bits */
+    md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
+                 (md5->hiLen << 3);
+    md5->loLen = md5->loLen << 3;
+
+    /* store lengths */
+    /* ! 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));
+
+    /* final transform and result to hash */
+    XTRANSFORM(md5, local);
+#ifdef BIG_ENDIAN_ORDER
+    ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
+#endif
+    XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);
+
+    return _InitMd5(md5); /* reset state */
+}
+#endif /* !HAVE_MD5_CUST_API */
+
+
+int wc_InitMd5(Md5* md5)
+{
+    if (md5 == NULL) {
+        return BAD_FUNC_ARG;
+    }
+    return wc_InitMd5_ex(md5, NULL, INVALID_DEVID);
+}
+
+void wc_Md5Free(Md5* md5)
+{
+    if (md5 == NULL)
+        return;
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
+    wolfAsync_DevCtxFree(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5);
+#endif /* WOLFSSL_ASYNC_CRYPT */
+}
+
+int wc_Md5GetHash(Md5* md5, byte* hash)
+{
+    int ret;
+    Md5 tmpMd5;
+
+    if (md5 == NULL || hash == NULL)
+        return BAD_FUNC_ARG;
+
+    ret = wc_Md5Copy(md5, &tmpMd5);
+    if (ret == 0) {
+        ret = wc_Md5Final(&tmpMd5, hash);
+    }
+
+    return ret;
+}
+
+int wc_Md5Copy(Md5* src, Md5* dst)
+{
+    int ret = 0;
+
+    if (src == NULL || dst == NULL)
+        return BAD_FUNC_ARG;
+
+    XMEMCPY(dst, src, sizeof(Md5));
+
+#ifdef WOLFSSL_ASYNC_CRYPT
+    ret = wolfAsync_DevCopy(&src->asyncDev, &dst->asyncDev);
+#endif
+#ifdef WOLFSSL_PIC32MZ_HASH
+    ret = wc_Pic32HashCopy(&src->cache, &dst->cache);
+#endif
+
+    return ret;
+}
+
+#endif /* WOLFSSL_TI_HASH */
+#endif /* NO_MD5 */
+