Diff: wolfcrypt/src/sha.c

Revision:

15:117db924cf7c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/sha.c	Sat Aug 18 22:20:43 2018 +0000
@@ -0,0 +1,598 @@
+/* sha.c
+ *
+ * Copyright (C) 2006-2017 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_SHA)
+
+#if defined(HAVE_FIPS) && \
+	defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
+
+    /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
+    #define FIPS_NO_WRAPPERS
+
+    #ifdef USE_WINDOWS_API
+        #pragma code_seg(".fipsA$j")
+        #pragma const_seg(".fipsB$j")
+    #endif
+#endif
+
+#include <wolfssl/wolfcrypt/sha.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+
+/* fips wrapper calls, user can call direct */
+#if defined(HAVE_FIPS) && \
+    (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
+
+    int wc_InitSha(wc_Sha* sha)
+    {
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return InitSha_fips(sha);
+    }
+    int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
+    {
+        (void)heap;
+        (void)devId;
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return InitSha_fips(sha);
+    }
+
+    int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+    {
+        if (sha == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+        return ShaUpdate_fips(sha, data, len);
+    }
+
+    int wc_ShaFinal(wc_Sha* sha, byte* out)
+    {
+        if (sha == NULL || out == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return ShaFinal_fips(sha,out);
+    }
+    void wc_ShaFree(wc_Sha* sha)
+    {
+        (void)sha;
+        /* Not supported in FIPS */
+    }
+
+#else /* else build without fips, or for FIPS v2 */
+
+
+#if defined(WOLFSSL_TI_HASH)
+    /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
+
+#else
+
+#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(WOLFSSL_PIC32MZ_HASH)
+    #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
+
+#elif defined(STM32_HASH)
+
+    /* Supports CubeMX HAL or Standard Peripheral Library */
+    int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
+    {
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        (void)devId;
+        (void)heap;
+
+        wc_Stm32_Hash_Init(&sha->stmCtx);
+
+        return 0;
+    }
+
+    int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+    {
+        int ret;
+
+        if (sha == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Update(&sha->stmCtx, HASH_AlgoSelection_SHA1,
+                data, len);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+    int wc_ShaFinal(wc_Sha* sha, byte* hash)
+    {
+        int ret;
+
+        if (sha == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Final(&sha->stmCtx, HASH_AlgoSelection_SHA1,
+                hash, WC_SHA_DIGEST_SIZE);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+
+        (void)wc_InitSha(sha);  /* reset state */
+
+        return ret;
+    }
+
+
+#elif defined(FREESCALE_LTC_SHA)
+
+    #include "fsl_ltc.h"
+    int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
+    {
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        (void)devId;
+        (void)heap;
+
+        LTC_HASH_Init(LTC_BASE, &sha->ctx, kLTC_Sha1, NULL, 0);
+        return 0;
+    }
+
+    int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+    {
+        LTC_HASH_Update(&sha->ctx, data, len);
+        return 0;
+    }
+
+    int wc_ShaFinal(wc_Sha* sha, byte* hash)
+    {
+        uint32_t hashlen = WC_SHA_DIGEST_SIZE;
+        LTC_HASH_Finish(&sha->ctx, hash, &hashlen);
+        return wc_InitSha(sha);  /* reset state */
+    }
+
+
+#elif defined(FREESCALE_MMCAU_SHA)
+
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+        #include "cau_api.h"
+    #else
+        #include "fsl_mmcau.h"
+    #endif
+
+    #define USE_SHA_SOFTWARE_IMPL /* Only for API's, actual transform is here */
+    #define XTRANSFORM(S,B)   Transform((S),(B))
+
+    static int InitSha(wc_Sha* sha)
+    {
+        int ret = 0;
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret != 0) {
+            return ret;
+        }
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+        cau_sha1_initialize_output(sha->digest);
+    #else
+        MMCAU_SHA1_InitializeOutput((uint32_t*)sha->digest);
+    #endif
+        wolfSSL_CryptHwMutexUnLock();
+
+        sha->buffLen = 0;
+        sha->loLen   = 0;
+        sha->hiLen   = 0;
+
+        return ret;
+    }
+
+    static int Transform(wc_Sha* sha, byte* data)
+    {
+        int ret = wolfSSL_CryptHwMutexLock();
+        if(ret == 0) {
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_sha1_hash_n(data, 1, sha->digest);
+    #else
+            MMCAU_SHA1_HashN(data, 1, (uint32_t*)sha->digest);
+    #endif
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+#elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
+    /* wolfcrypt/src/port/caam/caam_sha.c */
+#else
+
+    /* Software implementation */
+    #define USE_SHA_SOFTWARE_IMPL
+
+    static int InitSha(wc_Sha* sha)
+    {
+        int ret = 0;
+
+        sha->digest[0] = 0x67452301L;
+        sha->digest[1] = 0xEFCDAB89L;
+        sha->digest[2] = 0x98BADCFEL;
+        sha->digest[3] = 0x10325476L;
+        sha->digest[4] = 0xC3D2E1F0L;
+
+        sha->buffLen = 0;
+        sha->loLen   = 0;
+        sha->hiLen   = 0;
+
+        return ret;
+    }
+
+#endif /* End Hardware Acceleration */
+
+
+/* Software implementation */
+#ifdef USE_SHA_SOFTWARE_IMPL
+
+static WC_INLINE void AddLength(wc_Sha* sha, word32 len)
+{
+    word32 tmp = sha->loLen;
+    if ((sha->loLen += len) < tmp)
+        sha->hiLen++;                       /* carry low to high */
+}
+
+/* Check if custom wc_Sha transform is used */
+#ifndef XTRANSFORM
+    #define XTRANSFORM(S,B)   Transform((S),(B))
+
+    #define blk0(i) (W[i] = sha->buffer[i])
+    #define blk1(i) (W[(i)&15] = \
+        rotlFixed(W[((i)+13)&15]^W[((i)+8)&15]^W[((i)+2)&15]^W[(i)&15],1))
+
+    #define f1(x,y,z) ((z)^((x) &((y)^(z))))
+    #define f2(x,y,z) ((x)^(y)^(z))
+    #define f3(x,y,z) (((x)&(y))|((z)&((x)|(y))))
+    #define f4(x,y,z) ((x)^(y)^(z))
+
+    #ifdef WOLFSSL_NUCLEUS_1_2
+        /* nucleus.h also defines R1-R4 */
+        #undef R1
+        #undef R2
+        #undef R3
+        #undef R4
+    #endif
+
+    /* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+    #define R0(v,w,x,y,z,i) (z)+= f1((w),(x),(y)) + blk0((i)) + 0x5A827999+ \
+        rotlFixed((v),5); (w) = rotlFixed((w),30);
+    #define R1(v,w,x,y,z,i) (z)+= f1((w),(x),(y)) + blk1((i)) + 0x5A827999+ \
+        rotlFixed((v),5); (w) = rotlFixed((w),30);
+    #define R2(v,w,x,y,z,i) (z)+= f2((w),(x),(y)) + blk1((i)) + 0x6ED9EBA1+ \
+        rotlFixed((v),5); (w) = rotlFixed((w),30);
+    #define R3(v,w,x,y,z,i) (z)+= f3((w),(x),(y)) + blk1((i)) + 0x8F1BBCDC+ \
+        rotlFixed((v),5); (w) = rotlFixed((w),30);
+    #define R4(v,w,x,y,z,i) (z)+= f4((w),(x),(y)) + blk1((i)) + 0xCA62C1D6+ \
+        rotlFixed((v),5); (w) = rotlFixed((w),30);
+
+    static void Transform(wc_Sha* sha, byte* data)
+    {
+        word32 W[WC_SHA_BLOCK_SIZE / sizeof(word32)];
+
+        /* Copy context->state[] to working vars */
+        word32 a = sha->digest[0];
+        word32 b = sha->digest[1];
+        word32 c = sha->digest[2];
+        word32 d = sha->digest[3];
+        word32 e = sha->digest[4];
+
+    #ifdef USE_SLOW_SHA
+        word32 t, i;
+
+        for (i = 0; i < 16; i++) {
+            R0(a, b, c, d, e, i);
+            t = e; e = d; d = c; c = b; b = a; a = t;
+        }
+
+        for (; i < 20; i++) {
+            R1(a, b, c, d, e, i);
+            t = e; e = d; d = c; c = b; b = a; a = t;
+        }
+
+        for (; i < 40; i++) {
+            R2(a, b, c, d, e, i);
+            t = e; e = d; d = c; c = b; b = a; a = t;
+        }
+
+        for (; i < 60; i++) {
+            R3(a, b, c, d, e, i);
+            t = e; e = d; d = c; c = b; b = a; a = t;
+        }
+
+        for (; i < 80; i++) {
+            R4(a, b, c, d, e, i);
+            t = e; e = d; d = c; c = b; b = a; a = t;
+        }
+    #else
+        /* nearly 1 K bigger in code size but 25% faster */
+        /* 4 rounds of 20 operations each. Loop unrolled. */
+        R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+        R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+        R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+        R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+
+        R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+
+        R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+        R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+        R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+        R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+        R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+
+        R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+        R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+        R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+        R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+        R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+
+        R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+        R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+        R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+        R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+        R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+    #endif
+
+        /* Add the working vars back into digest state[] */
+        sha->digest[0] += a;
+        sha->digest[1] += b;
+        sha->digest[2] += c;
+        sha->digest[3] += d;
+        sha->digest[4] += e;
+
+        (void)data; /* Not used */
+    }
+#endif /* !USE_CUSTOM_SHA_TRANSFORM */
+
+
+int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
+{
+    int ret = 0;
+
+    if (sha == NULL)
+        return BAD_FUNC_ARG;
+
+    sha->heap = heap;
+
+    ret = InitSha(sha);
+    if (ret != 0)
+        return ret;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA)
+    ret = wolfAsync_DevCtxInit(&sha->asyncDev, WOLFSSL_ASYNC_MARKER_SHA,
+                                                            sha->heap, devId);
+#else
+    (void)devId;
+#endif /* WOLFSSL_ASYNC_CRYPT */
+
+    return ret;
+}
+
+int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+{
+    byte* local;
+
+    if (sha == NULL ||(data == NULL && len > 0)) {
+        return BAD_FUNC_ARG;
+    }
+
+    /* do block size increments */
+    local = (byte*)sha->buffer;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA)
+    if (sha->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA) {
+    #if defined(HAVE_INTEL_QA)
+        return IntelQaSymSha(&sha->asyncDev, NULL, data, len);
+    #endif
+    }
+#endif /* WOLFSSL_ASYNC_CRYPT */
+
+    /* check that internal buffLen is valid */
+    if (sha->buffLen >= WC_SHA_BLOCK_SIZE)
+        return BUFFER_E;
+
+    while (len) {
+        word32 add = min(len, WC_SHA_BLOCK_SIZE - sha->buffLen);
+        XMEMCPY(&local[sha->buffLen], data, add);
+
+        sha->buffLen += add;
+        data         += add;
+        len          -= add;
+
+        if (sha->buffLen == WC_SHA_BLOCK_SIZE) {
+#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+            ByteReverseWords(sha->buffer, sha->buffer, WC_SHA_BLOCK_SIZE);
+#endif
+            XTRANSFORM(sha, local);
+            AddLength(sha, WC_SHA_BLOCK_SIZE);
+            sha->buffLen = 0;
+        }
+    }
+
+    return 0;
+}
+
+int wc_ShaFinalRaw(wc_Sha* sha, byte* hash)
+{
+#ifdef LITTLE_ENDIAN_ORDER
+    word32 digest[WC_SHA_DIGEST_SIZE / sizeof(word32)];
+#endif
+
+    if (sha == NULL || hash == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
+#ifdef LITTLE_ENDIAN_ORDER
+    ByteReverseWords((word32*)digest, (word32*)sha->digest, WC_SHA_DIGEST_SIZE);
+    XMEMCPY(hash, digest, WC_SHA_DIGEST_SIZE);
+#else
+    XMEMCPY(hash, sha->digest, WC_SHA_DIGEST_SIZE);
+#endif
+
+    return 0;
+}
+
+int wc_ShaFinal(wc_Sha* sha, byte* hash)
+{
+    byte* local;
+
+    if (sha == NULL || hash == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
+    local = (byte*)sha->buffer;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA)
+    if (sha->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA) {
+    #if defined(HAVE_INTEL_QA)
+        return IntelQaSymSha(&sha->asyncDev, hash, NULL, WC_SHA_DIGEST_SIZE);
+    #endif
+    }
+#endif /* WOLFSSL_ASYNC_CRYPT */
+
+    AddLength(sha, sha->buffLen);  /* before adding pads */
+
+    local[sha->buffLen++] = 0x80;  /* add 1 */
+
+    /* pad with zeros */
+    if (sha->buffLen > WC_SHA_PAD_SIZE) {
+        XMEMSET(&local[sha->buffLen], 0, WC_SHA_BLOCK_SIZE - sha->buffLen);
+        sha->buffLen += WC_SHA_BLOCK_SIZE - sha->buffLen;
+
+#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+        ByteReverseWords(sha->buffer, sha->buffer, WC_SHA_BLOCK_SIZE);
+#endif
+        XTRANSFORM(sha, local);
+        sha->buffLen = 0;
+    }
+    XMEMSET(&local[sha->buffLen], 0, WC_SHA_PAD_SIZE - sha->buffLen);
+
+#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+    ByteReverseWords(sha->buffer, sha->buffer, WC_SHA_BLOCK_SIZE);
+#endif
+
+    /* store lengths */
+    /* put lengths in bits */
+    sha->hiLen = (sha->loLen >> (8*sizeof(sha->loLen) - 3)) + (sha->hiLen << 3);
+    sha->loLen = sha->loLen << 3;
+
+    /* ! length ordering dependent on digest endian type ! */
+    XMEMCPY(&local[WC_SHA_PAD_SIZE], &sha->hiLen, sizeof(word32));
+    XMEMCPY(&local[WC_SHA_PAD_SIZE + sizeof(word32)], &sha->loLen, sizeof(word32));
+
+#if defined(FREESCALE_MMCAU_SHA)
+    /* Kinetis requires only these bytes reversed */
+    ByteReverseWords(&sha->buffer[WC_SHA_PAD_SIZE/sizeof(word32)],
+                     &sha->buffer[WC_SHA_PAD_SIZE/sizeof(word32)],
+                     2 * sizeof(word32));
+#endif
+
+    XTRANSFORM(sha, local);
+#ifdef LITTLE_ENDIAN_ORDER
+    ByteReverseWords(sha->digest, sha->digest, WC_SHA_DIGEST_SIZE);
+#endif
+    XMEMCPY(hash, sha->digest, WC_SHA_DIGEST_SIZE);
+
+    return InitSha(sha); /* reset state */
+}
+
+#endif /* USE_SHA_SOFTWARE_IMPL */
+
+
+int wc_InitSha(wc_Sha* sha)
+{
+    return wc_InitSha_ex(sha, NULL, INVALID_DEVID);
+}
+
+void wc_ShaFree(wc_Sha* sha)
+{
+    if (sha == NULL)
+        return;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA)
+    wolfAsync_DevCtxFree(&sha->asyncDev, WOLFSSL_ASYNC_MARKER_SHA);
+#endif /* WOLFSSL_ASYNC_CRYPT */
+}
+
+#endif /* !WOLFSSL_TI_HASH */
+#endif /* HAVE_FIPS */
+
+#ifndef WOLFSSL_TI_HASH
+int wc_ShaGetHash(wc_Sha* sha, byte* hash)
+{
+    int ret;
+    wc_Sha tmpSha;
+
+    if (sha == NULL || hash == NULL)
+        return BAD_FUNC_ARG;
+
+    ret = wc_ShaCopy(sha, &tmpSha);
+    if (ret == 0) {
+        ret = wc_ShaFinal(&tmpSha, hash);
+    }
+    return ret;
+}
+
+int wc_ShaCopy(wc_Sha* src, wc_Sha* dst)
+{
+    int ret = 0;
+
+    if (src == NULL || dst == NULL)
+        return BAD_FUNC_ARG;
+
+    XMEMCPY(dst, src, sizeof(wc_Sha));
+
+#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_SHA */
+