1 files changed, 730 insertions, 306 deletions

diff --git a/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/sha.c b/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/sha.c
index be8cf17af..5c80563e1 100644
--- a/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/sha.c
+++ b/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/sha.c
@@ -1,8 +1,8 @@
 /* sha.c
  *
- * Copyright (C) 2006-2015 wolfSSL Inc.
+ * Copyright (C) 2006-2020 wolfSSL Inc.
  *
- * This file is part of wolfSSL. (formerly known as CyaSSL)
+ * 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
@@ -16,7 +16,7 @@
  *
  * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
  */
 
 
@@ -28,431 +28,855 @@
 
 #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/logging.h>
 #include <wolfssl/wolfcrypt/error-crypt.h>
+#include <wolfssl/wolfcrypt/hash.h>
 
-#ifdef NO_INLINE
-    #include <wolfssl/wolfcrypt/misc.h>
-#else
-    #include <wolfcrypt/src/misc.c>
+#ifdef WOLF_CRYPTO_CB
+    #include <wolfssl/wolfcrypt/cryptocb.h>
 #endif
 
 /* fips wrapper calls, user can call direct */
-#ifdef HAVE_FIPS
-	int wc_InitSha(Sha* sha)
-	{
-	    return InitSha_fips(sha);
-	}
-
-
-	int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
-	{
-	    return ShaUpdate_fips(sha, data, len);
-	}
+#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_ShaFinal(Sha* sha, byte* out)
-	{
-	    return ShaFinal_fips(sha,out);
+    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_ShaHash(const byte* data, word32 sz, byte* out)
+    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)
     {
-        return ShaHash(data, sz, out);
+        (void)sha;
+        /* Not supported in FIPS */
     }
 
-#else /* else build without 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
-
-#ifdef WOLFSSL_PIC32MZ_HASH
-#define wc_InitSha   wc_InitSha_sw
-#define wc_ShaUpdate wc_ShaUpdate_sw
-#define wc_ShaFinal  wc_ShaFinal_sw
-#endif
 
+#else
 
-#ifdef FREESCALE_MMCAU
-    #include "cau_api.h"
-    #define XTRANSFORM(S,B)  cau_sha1_hash_n((B), 1, ((S))->digest)
+#include <wolfssl/wolfcrypt/logging.h>
+#ifdef NO_INLINE
+    #include <wolfssl/wolfcrypt/misc.h>
 #else
-    #define XTRANSFORM(S,B)  Transform((S))
+    #define WOLFSSL_MISC_INCLUDED
+    #include <wolfcrypt/src/misc.c>
 #endif
 
-#ifdef STM32F2_HASH
-/*
- * STM32F2 hardware SHA1 support through the STM32F2 standard peripheral
- * library. Documentation located in STM32F2xx Standard Peripheral Library
- * document (See note in README).
- */
-#include "stm32f2xx.h"
-#include "stm32f2xx_hash.h"
 
-int wc_InitSha(Sha* sha)
-{
-    /* STM32F2 struct notes:
-     * sha->buffer  = first 4 bytes used to hold partial block if needed
-     * sha->buffLen = num bytes currently stored in sha->buffer
-     * sha->loLen   = num bytes that have been written to STM32 FIFO
-     */
-    XMEMSET(sha->buffer, 0, SHA_REG_SIZE);
-    sha->buffLen = 0;
-    sha->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_SHA1 | HASH_AlgoMode_HASH
-                 | HASH_DataType_8b);
-
-    /* reset HASH processor */
-    HASH->CR |= HASH_CR_INIT;
+/* Hardware Acceleration */
+#if defined(WOLFSSL_PIC32MZ_HASH)
+    #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
 
-    return 0;
-}
+#elif defined(STM32_HASH)
 
-int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
-{
-    word32 i = 0;
-    word32 fill = 0;
-    word32 diff = 0;
-
-    /* if saved partial block is available */
-    if (sha->buffLen) {
-        fill = 4 - sha->buffLen;
-
-        /* if enough data to fill, fill and push to FIFO */
-        if (fill <= len) {
-            XMEMCPY((byte*)sha->buffer + sha->buffLen, data, fill);
-            HASH_DataIn(*(uint32_t*)sha->buffer);
-
-            data += fill;
-            len -= fill;
-            sha->loLen += 4;
-            sha->buffLen = 0;
-        } else {
-            /* append partial to existing stored block */
-            XMEMCPY((byte*)sha->buffer + sha->buffLen, data, len);
-            sha->buffLen += len;
-            return;
+    /* 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;
     }
 
-    /* write input block in the IN FIFO */
-    for(i = 0; i < len; i += 4)
+    int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
     {
-        diff = len - i;
-        if ( diff < 4) {
-            /* store incomplete last block, not yet in FIFO */
-            XMEMSET(sha->buffer, 0, SHA_REG_SIZE);
-            XMEMCPY((byte*)sha->buffer, data, diff);
-            sha->buffLen = diff;
-        } else {
-            HASH_DataIn(*(uint32_t*)data);
-            data+=4;
+        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;
     }
 
-    /* keep track of total data length thus far */
-    sha->loLen += (len - sha->buffLen);
+    int wc_ShaFinal(wc_Sha* sha, byte* hash)
+    {
+        int ret;
 
-    return 0;
-}
+        if (sha == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
 
-int wc_ShaFinal(Sha* sha, byte* hash)
-{
-    __IO uint16_t nbvalidbitsdata = 0;
+        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 */
 
-    /* finish reading any trailing bytes into FIFO */
-    if (sha->buffLen) {
-        HASH_DataIn(*(uint32_t*)sha->buffer);
-        sha->loLen += sha->buffLen;
+        return ret;
     }
 
-    /* calculate number of valid bits in last word of input data */
-    nbvalidbitsdata = 8 * (sha->loLen % SHA_REG_SIZE);
 
-    /* configure number of valid bits in last word of the data */
-    HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
+#elif defined(FREESCALE_LTC_SHA)
 
-    /* start HASH processor */
-    HASH_StartDigest();
+    #include "fsl_ltc.h"
+    int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
+    {
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
 
-    /* wait until Busy flag == RESET */
-    while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}
+        (void)devId;
+        (void)heap;
 
-    /* read message digest */
-    sha->digest[0] = HASH->HR[0];
-    sha->digest[1] = HASH->HR[1];
-    sha->digest[2] = HASH->HR[2];
-    sha->digest[3] = HASH->HR[3];
-    sha->digest[4] = HASH->HR[4];
+        LTC_HASH_Init(LTC_BASE, &sha->ctx, kLTC_Sha1, NULL, 0);
+        return 0;
+    }
 
-    ByteReverseWords(sha->digest, sha->digest, SHA_DIGEST_SIZE);
+    int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+    {
+        LTC_HASH_Update(&sha->ctx, data, len);
+        return 0;
+    }
 
-    XMEMCPY(hash, sha->digest, SHA_DIGEST_SIZE);
+    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 */
+    }
 
-    return wc_InitSha(sha);  /* reset state */
-}
 
-#else /* wc_ software implementation */
+#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 */
 
-#ifndef WOLFSSL_HAVE_MIN
-#define WOLFSSL_HAVE_MIN
+    #define XTRANSFORM(S,B)       Transform((S),(B))
+    #define XTRANSFORM_LEN(S,B,L) Transform_Len((S),(B),(L))
 
-    static INLINE word32 min(word32 a, word32 b)
+    #ifndef WC_HASH_DATA_ALIGNMENT
+        /* these hardware API's require 4 byte (word32) alignment */
+        #define WC_HASH_DATA_ALIGNMENT 4
+    #endif
+
+    static int InitSha(wc_Sha* sha)
     {
-        return a > b ? b : a;
+        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;
     }
 
-#endif /* WOLFSSL_HAVE_MIN */
+    static int Transform(wc_Sha* sha, const byte* data)
+    {
+        int ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_sha1_hash_n((byte*)data, 1, sha->digest);
+    #else
+            MMCAU_SHA1_HashN((byte*)data, 1, (uint32_t*)sha->digest);
+    #endif
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
 
+    static int Transform_Len(wc_Sha* sha, const byte* data, word32 len)
+    {
+        int ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+        #if defined(WC_HASH_DATA_ALIGNMENT) && WC_HASH_DATA_ALIGNMENT > 0
+            if ((size_t)data % WC_HASH_DATA_ALIGNMENT) {
+                /* data pointer is NOT aligned,
+                 * so copy and perform one block at a time */
+                byte* local = (byte*)sha->buffer;
+                while (len >= WC_SHA_BLOCK_SIZE) {
+                    XMEMCPY(local, data, WC_SHA_BLOCK_SIZE);
+                #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+                    cau_sha1_hash_n(local, 1, sha->digest);
+                #else
+                    MMCAU_SHA1_HashN(local, 1, sha->digest);
+                #endif
+                    data += WC_SHA_BLOCK_SIZE;
+                    len  -= WC_SHA_BLOCK_SIZE;
+                }
+            }
+            else
+        #endif
+            {
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_sha1_hash_n((byte*)data, len/WC_SHA_BLOCK_SIZE, sha->digest);
+    #else
+            MMCAU_SHA1_HashN((byte*)data, len/WC_SHA_BLOCK_SIZE,
+                (uint32_t*)sha->digest);
+    #endif
+            }
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
 
-int wc_InitSha(Sha* sha)
-{
-#ifdef FREESCALE_MMCAU
-    cau_sha1_initialize_output(sha->digest);
-#else
-    sha->digest[0] = 0x67452301L;
-    sha->digest[1] = 0xEFCDAB89L;
-    sha->digest[2] = 0x98BADCFEL;
-    sha->digest[3] = 0x10325476L;
-    sha->digest[4] = 0xC3D2E1F0L;
-#endif
+#elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
+    /* wolfcrypt/src/port/caam/caam_sha.c */
 
-    sha->buffLen = 0;
-    sha->loLen   = 0;
-    sha->hiLen   = 0;
+#elif defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+     !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
 
-    return 0;
-}
+    #include "wolfssl/wolfcrypt/port/Espressif/esp32-crypt.h"
 
-#ifndef FREESCALE_MMCAU
-
-#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))
-
-/* (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(Sha* sha)
-{
-    word32 W[SHA_BLOCK_SIZE / sizeof(word32)];
+    #define USE_SHA_SOFTWARE_IMPL
 
-    /* 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];
+    static int InitSha(wc_Sha* sha)
+    {
+        int ret = 0;
 
-#ifdef USE_SLOW_SHA
-    word32 t, i;
+        sha->digest[0] = 0x67452301L;
+        sha->digest[1] = 0xEFCDAB89L;
+        sha->digest[2] = 0x98BADCFEL;
+        sha->digest[3] = 0x10325476L;
+        sha->digest[4] = 0xC3D2E1F0L;
 
-    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;
-    }
+        sha->buffLen = 0;
+        sha->loLen   = 0;
+        sha->hiLen   = 0;
+
+        /* always start firstblock = 1 when using hw engine */
+        sha->ctx.isfirstblock = 1;
+        sha->ctx.sha_type = SHA1;
+        if(sha->ctx.mode == ESP32_SHA_HW){
+            /* release hw engine */
+            esp_sha_hw_unlock();
+        }
+        /* always set mode as INIT
+        *  whether using HW or SW is determined at first call of update()
+        */
+        sha->ctx.mode = ESP32_SHA_INIT;
 
-    for (; i < 20; i++) {
-        R1(a, b, c, d, e, i);
-        t = e; e = d; d = c; c = b; b = a; a = t;
+        return ret;
     }
 
-    for (; i < 40; i++) {
-        R2(a, b, c, d, e, i);
-        t = e; e = d; d = c; c = b; b = a; a = t;
-    }
+#elif defined(WOLFSSL_RENESAS_TSIP_CRYPT) && \
+    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH)
 
-    for (; i < 60; i++) {
-        R3(a, b, c, d, e, i);
-        t = e; e = d; d = c; c = b; b = a; a = t;
-    }
+    /* implemented in wolfcrypt/src/port/Renesas/renesas_tsip_sha.c */
 
-    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
+    /* Software implementation */
+    #define USE_SHA_SOFTWARE_IMPL
 
-    /* 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;
-}
+    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;
 
-#endif /* FREESCALE_MMCAU */
+        sha->buffLen = 0;
+        sha->loLen   = 0;
+        sha->hiLen   = 0;
+    #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+        sha->flags = 0;
+    #endif
+
+        return ret;
+    }
+#endif /* End Hardware Acceleration */
 
+/* Software implementation */
+#ifdef USE_SHA_SOFTWARE_IMPL
 
-static INLINE void AddLength(Sha* sha, word32 len)
+static WC_INLINE void AddLength(wc_Sha* sha, word32 len)
 {
     word32 tmp = sha->loLen;
-    if ( (sha->loLen += len) < tmp)
+    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] = *((word32*)&data[i*sizeof(word32)]))
+    #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 int Transform(wc_Sha* sha, const 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;
+        }
 
-int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
+        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 */
+
+        return 0;
+    }
+#endif /* !USE_CUSTOM_SHA_TRANSFORM */
+
+
+int wc_InitSha_ex(wc_Sha* sha, void* heap, int devId)
 {
-    /* do block size increments */
-    byte* local = (byte*)sha->buffer;
+    int ret = 0;
+
+    if (sha == NULL)
+        return BAD_FUNC_ARG;
 
-    while (len) {
-        word32 add = min(len, SHA_BLOCK_SIZE - sha->buffLen);
-        XMEMCPY(&local[sha->buffLen], data, add);
+    sha->heap = heap;
+#ifdef WOLF_CRYPTO_CB
+    sha->devId = devId;
+#endif
+
+#if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+    sha->ctx.mode = ESP32_SHA_INIT;
+    sha->ctx.isfirstblock = 1;
+#endif
+    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 */
 
-        sha->buffLen += add;
-        data         += add;
-        len          -= add;
+    return ret;
+}
 
-        if (sha->buffLen == SHA_BLOCK_SIZE) {
-#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
-            ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
+/* do block size increments/updates */
+int wc_ShaUpdate(wc_Sha* sha, const byte* data, word32 len)
+{
+    int ret = 0;
+    word32 blocksLen;
+    byte* local;
+
+    if (sha == NULL || (data == NULL && len > 0)) {
+        return BAD_FUNC_ARG;
+    }
+
+#ifdef WOLF_CRYPTO_CB
+    if (sha->devId != INVALID_DEVID) {
+        ret = wc_CryptoCb_ShaHash(sha, data, len, NULL);
+        if (ret != CRYPTOCB_UNAVAILABLE)
+            return ret;
+        ret = 0; /* reset ret */
+        /* fall-through when unavailable */
+    }
 #endif
-            XTRANSFORM(sha, local);
-            AddLength(sha, SHA_BLOCK_SIZE);
+#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;
+
+    if (data == NULL && len == 0) {
+        /* valid, but do nothing */
+        return 0;
+    }
+
+    /* add length for final */
+    AddLength(sha, len);
+
+    local = (byte*)sha->buffer;
+
+    /* process any remainder from previous operation */
+    if (sha->buffLen > 0) {
+        blocksLen = min(len, WC_SHA_BLOCK_SIZE - sha->buffLen);
+        XMEMCPY(&local[sha->buffLen], data, blocksLen);
+
+        sha->buffLen += blocksLen;
+        data         += blocksLen;
+        len          -= blocksLen;
+
+        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
+
+        #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+            !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+            if (sha->ctx.mode == ESP32_SHA_INIT) {
+                esp_sha_try_hw_lock(&sha->ctx);
+            }
+            if (sha->ctx.mode == ESP32_SHA_SW) {
+                ret = XTRANSFORM(sha, (const byte*)local);
+            } else {
+                esp_sha_process(sha, (const byte*)local);
+            }
+        #else
+            ret = XTRANSFORM(sha, (const byte*)local);
+        #endif
+            if (ret != 0)
+                return ret;
+
             sha->buffLen = 0;
         }
     }
 
-    return 0;
+    /* process blocks */
+#ifdef XTRANSFORM_LEN
+    /* get number of blocks */
+    /* 64-1 = 0x3F (~ Inverted = 0xFFFFFFC0) */
+    /* len (masked by 0xFFFFFFC0) returns block aligned length */
+    blocksLen = len & ~(WC_SHA_BLOCK_SIZE-1);
+    if (blocksLen > 0) {
+        /* Byte reversal performed in function if required. */
+        XTRANSFORM_LEN(sha, data, blocksLen);
+        data += blocksLen;
+        len  -= blocksLen;
+    }
+#else
+    while (len >= WC_SHA_BLOCK_SIZE) {
+        word32* local32 = sha->buffer;
+        /* optimization to avoid memcpy if data pointer is properly aligned */
+        /* Little Endian requires byte swap, so can't use data directly */
+    #if defined(WC_HASH_DATA_ALIGNMENT) && !defined(LITTLE_ENDIAN_ORDER)
+        if (((size_t)data % WC_HASH_DATA_ALIGNMENT) == 0) {
+            local32 = (word32*)data;
+        }
+        else
+    #endif
+        {
+            XMEMCPY(local32, data, WC_SHA_BLOCK_SIZE);
+        }
+
+        data += WC_SHA_BLOCK_SIZE;
+        len  -= WC_SHA_BLOCK_SIZE;
+
+    #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+        ByteReverseWords(local32, local32, WC_SHA_BLOCK_SIZE);
+    #endif
+
+    #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+        !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+        if (sha->ctx.mode == ESP32_SHA_INIT){
+            esp_sha_try_hw_lock(&sha->ctx);
+        }
+        if (sha->ctx.mode == ESP32_SHA_SW){
+            ret = XTRANSFORM(sha, (const byte*)local32);
+        } else {
+            esp_sha_process(sha, (const byte*)local32);
+        }
+    #else
+        ret = XTRANSFORM(sha, (const byte*)local32);
+    #endif
+    }
+#endif /* XTRANSFORM_LEN */
+
+    /* save remainder */
+    if (len > 0) {
+        XMEMCPY(local, data, len);
+        sha->buffLen = len;
+    }
+
+    return ret;
 }
 
+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(Sha* sha, byte* hash)
+int wc_ShaFinal(wc_Sha* sha, byte* hash)
 {
-    byte* local = (byte*)sha->buffer;
+    int ret;
+    byte* local;
+
+    if (sha == NULL || hash == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
+    local = (byte*)sha->buffer;
 
-    AddLength(sha, sha->buffLen);  /* before adding pads */
+#ifdef WOLF_CRYPTO_CB
+    if (sha->devId != INVALID_DEVID) {
+        ret = wc_CryptoCb_ShaHash(sha, NULL, 0, hash);
+        if (ret != CRYPTOCB_UNAVAILABLE)
+            return ret;
+        ret = 0; /* reset ret */
+        /* fall-through when unavailable */
+    }
+#endif
+#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 */
 
     local[sha->buffLen++] = 0x80;  /* add 1 */
 
     /* pad with zeros */
-    if (sha->buffLen > SHA_PAD_SIZE) {
-        XMEMSET(&local[sha->buffLen], 0, SHA_BLOCK_SIZE - sha->buffLen);
-        sha->buffLen += SHA_BLOCK_SIZE - sha->buffLen;
+    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
+
+    #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+        !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+        if (sha->ctx.mode == ESP32_SHA_INIT) {
+            esp_sha_try_hw_lock(&sha->ctx);
+        }
+        if (sha->ctx.mode == ESP32_SHA_SW) {
+            ret = XTRANSFORM(sha, (const byte*)local);
+        } else {
+            ret = esp_sha_process(sha, (const byte*)local);
+        }
+    #else
+        ret = XTRANSFORM(sha, (const byte*)local);
+    #endif
+        if (ret != 0)
+            return ret;
 
-#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
-        ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
-#endif
-        XTRANSFORM(sha, local);
         sha->buffLen = 0;
     }
-    XMEMSET(&local[sha->buffLen], 0, SHA_PAD_SIZE - sha->buffLen);
+    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->hiLen = (sha->loLen >> (8*sizeof(sha->loLen) - 3)) + (sha->hiLen << 3);
     sha->loLen = sha->loLen << 3;
 
-    /* store lengths */
-#if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
-    ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
-#endif
     /* ! length ordering dependent on digest endian type ! */
-    XMEMCPY(&local[SHA_PAD_SIZE], &sha->hiLen, sizeof(word32));
-    XMEMCPY(&local[SHA_PAD_SIZE + sizeof(word32)], &sha->loLen, sizeof(word32));
+    XMEMCPY(&local[WC_SHA_PAD_SIZE], &sha->hiLen, sizeof(word32));
+    XMEMCPY(&local[WC_SHA_PAD_SIZE + sizeof(word32)], &sha->loLen, sizeof(word32));
 
-#ifdef FREESCALE_MMCAU
+#if defined(FREESCALE_MMCAU_SHA)
     /* Kinetis requires only these bytes reversed */
-    ByteReverseWords(&sha->buffer[SHA_PAD_SIZE/sizeof(word32)],
-                     &sha->buffer[SHA_PAD_SIZE/sizeof(word32)],
+    ByteReverseWords(&sha->buffer[WC_SHA_PAD_SIZE/sizeof(word32)],
+                     &sha->buffer[WC_SHA_PAD_SIZE/sizeof(word32)],
                      2 * sizeof(word32));
 #endif
 
-    XTRANSFORM(sha, local);
+#if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+    if (sha->ctx.mode == ESP32_SHA_INIT) {
+        esp_sha_try_hw_lock(&sha->ctx);
+    }
+    if (sha->ctx.mode == ESP32_SHA_SW) {
+        ret = XTRANSFORM(sha, (const byte*)local);
+    } else {
+        ret = esp_sha_digest_process(sha, 1);
+    }
+#else
+    ret = XTRANSFORM(sha, (const byte*)local);
+#endif
+
 #ifdef LITTLE_ENDIAN_ORDER
-    ByteReverseWords(sha->digest, sha->digest, SHA_DIGEST_SIZE);
+    ByteReverseWords(sha->digest, sha->digest, WC_SHA_DIGEST_SIZE);
 #endif
-    XMEMCPY(hash, sha->digest, SHA_DIGEST_SIZE);
 
-    return wc_InitSha(sha);  /* reset state */
+    XMEMCPY(hash, sha->digest, WC_SHA_DIGEST_SIZE);
+
+    (void)InitSha(sha); /* reset state */
+
+    return ret;
 }
 
-#endif /* STM32F2_HASH */
+#endif /* USE_SHA_SOFTWARE_IMPL */
 
 
-int wc_ShaHash(const byte* data, word32 len, byte* hash)
+int wc_InitSha(wc_Sha* sha)
 {
-    int ret = 0;
-#ifdef WOLFSSL_SMALL_STACK
-    Sha* sha;
-#else
-    Sha sha[1];
-#endif
+    return wc_InitSha_ex(sha, NULL, INVALID_DEVID);
+}
 
-#ifdef WOLFSSL_SMALL_STACK
-    sha = (Sha*)XMALLOC(sizeof(Sha), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+void wc_ShaFree(wc_Sha* sha)
+{
     if (sha == NULL)
-        return MEMORY_E;
-#endif
+        return;
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA)
+    wolfAsync_DevCtxFree(&sha->asyncDev, WOLFSSL_ASYNC_MARKER_SHA);
+#endif /* WOLFSSL_ASYNC_CRYPT */
 
-    if ((ret = wc_InitSha(sha)) != 0) {
-        WOLFSSL_MSG("wc_InitSha failed");
+#ifdef WOLFSSL_PIC32MZ_HASH
+    wc_ShaPic32Free(sha);
+#endif
+#if (defined(WOLFSSL_RENESAS_TSIP_CRYPT) && \
+    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH))
+    if (sha->msg != NULL) {
+        XFREE(sha->msg, sha->heap, DYNAMIC_TYPE_TMP_BUFFER);
+        sha->msg = NULL;
     }
-    else {
-        wc_ShaUpdate(sha, data, len);
-        wc_ShaFinal(sha, hash);
+#endif
+}
+
+#endif /* !WOLFSSL_TI_HASH */
+#endif /* HAVE_FIPS */
+
+#ifndef WOLFSSL_TI_HASH
+#if !defined(WOLFSSL_RENESAS_TSIP_CRYPT) || \
+    defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH)
+int wc_ShaGetHash(wc_Sha* sha, byte* hash)
+{
+    int ret;
+    wc_Sha tmpSha;
+
+    if (sha == NULL || hash == NULL)
+        return BAD_FUNC_ARG;
+
+#if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+    if(sha->ctx.mode == ESP32_SHA_INIT){
+        esp_sha_try_hw_lock(&sha->ctx);
     }
+    if(sha->ctx.mode != ESP32_SHA_SW)
+        esp_sha_digest_process(sha, 0);
+#endif
 
-#ifdef WOLFSSL_SMALL_STACK
-    XFREE(sha, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    ret = wc_ShaCopy(sha, &tmpSha);
+    if (ret == 0) {
+       ret = wc_ShaFinal(&tmpSha, hash);
+#if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+        sha->ctx.mode = ESP32_SHA_SW;
 #endif
 
+
+    }
     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
+#if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+     dst->ctx.mode = src->ctx.mode;
+     dst->ctx.isfirstblock = src->ctx.isfirstblock;
+     dst->ctx.sha_type = src->ctx.sha_type;
+#endif
+#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+     dst->flags |= WC_HASH_FLAG_ISCOPY;
+#endif
+    return ret;
 }
+#endif /* defined(WOLFSSL_RENESAS_TSIP_CRYPT) ... */
+#endif /* !WOLFSSL_TI_HASH */
 
-#endif /* HAVE_FIPS */
-#endif /* WOLFSSL_TI_HASH */
-#endif /* NO_SHA */
 
+#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+int wc_ShaSetFlags(wc_Sha* sha, word32 flags)
+{
+    if (sha) {
+        sha->flags = flags;
+    }
+    return 0;
+}
+int wc_ShaGetFlags(wc_Sha* sha, word32* flags)
+{
+    if (sha && flags) {
+        *flags = sha->flags;
+    }
+    return 0;
+}
+#endif
+
+#endif /* !NO_SHA */