Initial commit

1 files changed, 1644 insertions, 0 deletions

diff --git a/wolfcrypt/src/sha256.c b/wolfcrypt/src/sha256.c
new file mode 100644
index 0000000..eb0911b
--- /dev/null
+++ b/wolfcrypt/src/sha256.c
@@ -0,0 +1,1644 @@
+/* sha256.c
+ *
+ * Copyright (C) 2006-2020 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>
+
+/*
+ * SHA256 Build Options:
+ * USE_SLOW_SHA256:            Reduces code size by not partially unrolling
+                                (~2KB smaller and ~25% slower) (default OFF)
+ * WOLFSSL_SHA256_BY_SPEC:     Uses the Ch/Maj based on SHA256 specification
+                                (default ON)
+ * WOLFSSL_SHA256_ALT_CH_MAJ:  Alternate Ch/Maj that is easier for compilers to
+                                optimize and recognize as SHA256 (default OFF)
+ * SHA256_MANY_REGISTERS:      A SHA256 version that keeps all data in registers
+                                and partial unrolled (default OFF)
+ */
+
+/* Default SHA256 to use Ch/Maj based on specification */
+#if !defined(WOLFSSL_SHA256_BY_SPEC) && !defined(WOLFSSL_SHA256_ALT_CH_MAJ)
+    #define WOLFSSL_SHA256_BY_SPEC
+#endif
+
+
+#if !defined(NO_SHA256) && !defined(WOLFSSL_ARMASM)
+
+#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$d")
+        #pragma const_seg(".fipsB$d")
+    #endif
+#endif
+
+#include <wolfssl/wolfcrypt/sha256.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+#include <wolfssl/wolfcrypt/cpuid.h>
+#include <wolfssl/wolfcrypt/hash.h>
+
+#ifdef WOLF_CRYPTO_CB
+    #include <wolfssl/wolfcrypt/cryptocb.h>
+#endif
+
+/* fips wrapper calls, user can call direct */
+#if defined(HAVE_FIPS) && \
+    (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
+
+    int wc_InitSha256(wc_Sha256* sha)
+    {
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return InitSha256_fips(sha);
+    }
+    int wc_InitSha256_ex(wc_Sha256* sha, void* heap, int devId)
+    {
+        (void)heap;
+        (void)devId;
+        if (sha == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return InitSha256_fips(sha);
+    }
+    int wc_Sha256Update(wc_Sha256* sha, const byte* data, word32 len)
+    {
+        if (sha == NULL ||  (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        if (data == NULL && len == 0) {
+            /* valid, but do nothing */
+            return 0;
+        }
+
+        return Sha256Update_fips(sha, data, len);
+    }
+    int wc_Sha256Final(wc_Sha256* sha, byte* out)
+    {
+        if (sha == NULL || out == NULL) {
+            return BAD_FUNC_ARG;
+        }
+        return Sha256Final_fips(sha, out);
+    }
+    void wc_Sha256Free(wc_Sha256* 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 */
+#elif defined(WOLFSSL_CRYPTOCELL)
+    /* wc_port.c includes wolfcrypt/src/port/arm/cryptoCellHash.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
+
+#ifdef WOLFSSL_DEVCRYPTO_HASH
+    #include <wolfssl/wolfcrypt/port/devcrypto/wc_devcrypto.h>
+#endif
+
+
+
+#if defined(USE_INTEL_SPEEDUP)
+    #if defined(__GNUC__) && ((__GNUC__ < 4) || \
+                              (__GNUC__ == 4 && __GNUC_MINOR__ <= 8))
+        #undef  NO_AVX2_SUPPORT
+        #define NO_AVX2_SUPPORT
+    #endif
+    #if defined(__clang__) && ((__clang_major__ < 3) || \
+                               (__clang_major__ == 3 && __clang_minor__ <= 5))
+        #define NO_AVX2_SUPPORT
+    #elif defined(__clang__) && defined(NO_AVX2_SUPPORT)
+        #undef NO_AVX2_SUPPORT
+    #endif
+
+    #define HAVE_INTEL_AVX1
+    #ifndef NO_AVX2_SUPPORT
+        #define HAVE_INTEL_AVX2
+    #endif
+#endif /* USE_INTEL_SPEEDUP */
+
+#if defined(HAVE_INTEL_AVX2)
+    #define HAVE_INTEL_RORX
+#endif
+
+
+#if !defined(WOLFSSL_PIC32MZ_HASH) && !defined(STM32_HASH_SHA2) && \
+    (!defined(WOLFSSL_IMX6_CAAM) || defined(NO_IMX6_CAAM_HASH)) && \
+    !defined(WOLFSSL_AFALG_HASH) && !defined(WOLFSSL_DEVCRYPTO_HASH) && \
+    (!defined(WOLFSSL_ESP32WROOM32_CRYPT) || defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)) && \
+    (!defined(WOLFSSL_RENESAS_TSIP_CRYPT) || defined(NO_WOLFSSL_RENESAS_TSIP_HASH))
+
+static int InitSha256(wc_Sha256* sha256)
+{
+    int ret = 0;
+
+    if (sha256 == NULL)
+        return BAD_FUNC_ARG;
+
+    XMEMSET(sha256->digest, 0, sizeof(sha256->digest));
+    sha256->digest[0] = 0x6A09E667L;
+    sha256->digest[1] = 0xBB67AE85L;
+    sha256->digest[2] = 0x3C6EF372L;
+    sha256->digest[3] = 0xA54FF53AL;
+    sha256->digest[4] = 0x510E527FL;
+    sha256->digest[5] = 0x9B05688CL;
+    sha256->digest[6] = 0x1F83D9ABL;
+    sha256->digest[7] = 0x5BE0CD19L;
+
+    sha256->buffLen = 0;
+    sha256->loLen   = 0;
+    sha256->hiLen   = 0;
+#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+    sha256->flags = 0;
+#endif
+
+    return ret;
+}
+#endif
+
+
+/* Hardware Acceleration */
+#if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+
+    /* in case intel instructions aren't available, plus we need the K[] global */
+    #define NEED_SOFT_SHA256
+
+    /*****
+    Intel AVX1/AVX2 Macro Control Structure
+
+    #define HAVE_INTEL_AVX1
+    #define HAVE_INTEL_AVX2
+
+    #define HAVE_INTEL_RORX
+
+
+    int InitSha256(wc_Sha256* sha256) {
+         Save/Recover XMM, YMM
+         ...
+    }
+
+    #if defined(HAVE_INTEL_AVX1)|| defined(HAVE_INTEL_AVX2)
+      Transform_Sha256(); Function prototype
+    #else
+      Transform_Sha256() {   }
+      int Sha256Final() {
+         Save/Recover XMM, YMM
+         ...
+      }
+    #endif
+
+    #if defined(HAVE_INTEL_AVX1)|| defined(HAVE_INTEL_AVX2)
+        #if defined(HAVE_INTEL_RORX
+             #define RND with rorx instruction
+        #else
+            #define RND
+        #endif
+    #endif
+
+    #if defined(HAVE_INTEL_AVX1)
+
+       #define XMM Instructions/inline asm
+
+       int Transform_Sha256() {
+           Stitched Message Sched/Round
+        }
+
+    #elif defined(HAVE_INTEL_AVX2)
+
+      #define YMM Instructions/inline asm
+
+      int Transform_Sha256() {
+          More granular Stitched Message Sched/Round
+      }
+
+    #endif
+
+    */
+
+    /* Each platform needs to query info type 1 from cpuid to see if aesni is
+     * supported. Also, let's setup a macro for proper linkage w/o ABI conflicts
+     */
+
+    /* #if defined(HAVE_INTEL_AVX1/2) at the tail of sha256 */
+    static int Transform_Sha256(wc_Sha256* sha256, const byte* data);
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+    #if defined(HAVE_INTEL_AVX1)
+        extern int Transform_Sha256_AVX1(wc_Sha256 *sha256, const byte* data);
+        extern int Transform_Sha256_AVX1_Len(wc_Sha256* sha256,
+                                             const byte* data, word32 len);
+    #endif
+    #if defined(HAVE_INTEL_AVX2)
+        extern int Transform_Sha256_AVX2(wc_Sha256 *sha256, const byte* data);
+        extern int Transform_Sha256_AVX2_Len(wc_Sha256* sha256,
+                                             const byte* data, word32 len);
+        #ifdef HAVE_INTEL_RORX
+        extern int Transform_Sha256_AVX1_RORX(wc_Sha256 *sha256, const byte* data);
+        extern int Transform_Sha256_AVX1_RORX_Len(wc_Sha256* sha256,
+                                                  const byte* data, word32 len);
+        extern int Transform_Sha256_AVX2_RORX(wc_Sha256 *sha256, const byte* data);
+        extern int Transform_Sha256_AVX2_RORX_Len(wc_Sha256* sha256,
+                                                  const byte* data, word32 len);
+        #endif /* HAVE_INTEL_RORX */
+    #endif /* HAVE_INTEL_AVX2 */
+
+#ifdef __cplusplus
+    }  /* extern "C" */
+#endif
+
+    static int (*Transform_Sha256_p)(wc_Sha256* sha256, const byte* data);
+                                                       /* = _Transform_Sha256 */
+    static int (*Transform_Sha256_Len_p)(wc_Sha256* sha256, const byte* data,
+                                         word32 len);
+                                                                    /* = NULL */
+    static int transform_check = 0;
+    static word32 intel_flags;
+
+    #define XTRANSFORM(S, D)         (*Transform_Sha256_p)((S),(D))
+    #define XTRANSFORM_LEN(S, D, L)  (*Transform_Sha256_Len_p)((S),(D),(L))
+
+    static void Sha256_SetTransform(void)
+    {
+
+        if (transform_check)
+            return;
+
+        intel_flags = cpuid_get_flags();
+
+    #ifdef HAVE_INTEL_AVX2
+        if (1 && IS_INTEL_AVX2(intel_flags)) {
+        #ifdef HAVE_INTEL_RORX
+            if (IS_INTEL_BMI2(intel_flags)) {
+                Transform_Sha256_p = Transform_Sha256_AVX2_RORX;
+                Transform_Sha256_Len_p = Transform_Sha256_AVX2_RORX_Len;
+            }
+            else
+        #endif
+            if (1)
+            {
+                Transform_Sha256_p = Transform_Sha256_AVX2;
+                Transform_Sha256_Len_p = Transform_Sha256_AVX2_Len;
+            }
+        #ifdef HAVE_INTEL_RORX
+            else {
+                Transform_Sha256_p = Transform_Sha256_AVX1_RORX;
+                Transform_Sha256_Len_p = Transform_Sha256_AVX1_RORX_Len;
+            }
+        #endif
+        }
+        else
+    #endif
+    #ifdef HAVE_INTEL_AVX1
+        if (IS_INTEL_AVX1(intel_flags)) {
+            Transform_Sha256_p = Transform_Sha256_AVX1;
+            Transform_Sha256_Len_p = Transform_Sha256_AVX1_Len;
+        }
+        else
+    #endif
+        {
+            Transform_Sha256_p = Transform_Sha256;
+            Transform_Sha256_Len_p = NULL;
+        }
+
+        transform_check = 1;
+    }
+
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        int ret = 0;
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        sha256->heap = heap;
+    #ifdef WOLF_CRYPTO_CB
+        sha256->devId = devId;
+    #endif
+
+        ret = InitSha256(sha256);
+        if (ret != 0)
+            return ret;
+
+        /* choose best Transform function under this runtime environment */
+        Sha256_SetTransform();
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA256)
+        ret = wolfAsync_DevCtxInit(&sha256->asyncDev,
+                            WOLFSSL_ASYNC_MARKER_SHA256, sha256->heap, devId);
+    #else
+        (void)devId;
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        return ret;
+    }
+
+#elif defined(FREESCALE_LTC_SHA)
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        (void)heap;
+        (void)devId;
+
+        LTC_HASH_Init(LTC_BASE, &sha256->ctx, kLTC_Sha256, NULL, 0);
+
+        return 0;
+    }
+
+#elif defined(FREESCALE_MMCAU_SHA)
+
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+        #include "cau_api.h"
+    #else
+        #include "fsl_mmcau.h"
+    #endif
+
+    #define XTRANSFORM(S, D)         Transform_Sha256((S),(D))
+    #define XTRANSFORM_LEN(S, D, L)  Transform_Sha256_Len((S),(D),(L))
+
+    #ifndef WC_HASH_DATA_ALIGNMENT
+        /* these hardware API's require 4 byte (word32) alignment */
+        #define WC_HASH_DATA_ALIGNMENT 4
+    #endif
+
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        int ret = 0;
+
+        (void)heap;
+        (void)devId;
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret != 0) {
+            return ret;
+        }
+
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+        cau_sha256_initialize_output(sha256->digest);
+    #else
+        MMCAU_SHA256_InitializeOutput((uint32_t*)sha256->digest);
+    #endif
+        wolfSSL_CryptHwMutexUnLock();
+
+        sha256->buffLen = 0;
+        sha256->loLen   = 0;
+        sha256->hiLen   = 0;
+    #ifdef WOLFSSL_SMALL_STACK_CACHE
+        sha256->W = NULL;
+    #endif
+
+        return ret;
+    }
+
+    static int Transform_Sha256(wc_Sha256* sha256, const byte* data)
+    {
+        int ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_sha256_hash_n((byte*)data, 1, sha256->digest);
+    #else
+            MMCAU_SHA256_HashN((byte*)data, 1, sha256->digest);
+    #endif
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+    static int Transform_Sha256_Len(wc_Sha256* sha256, 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*)sha256->buffer;
+                while (len >= WC_SHA256_BLOCK_SIZE) {
+                    XMEMCPY(local, data, WC_SHA256_BLOCK_SIZE);
+                #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+                    cau_sha256_hash_n(local, 1, sha256->digest);
+                #else
+                    MMCAU_SHA256_HashN(local, 1, sha256->digest);
+                #endif
+                    data += WC_SHA256_BLOCK_SIZE;
+                    len  -= WC_SHA256_BLOCK_SIZE;
+                }
+            }
+            else
+        #endif
+            {
+    #ifdef FREESCALE_MMCAU_CLASSIC_SHA
+            cau_sha256_hash_n((byte*)data, len/WC_SHA256_BLOCK_SIZE,
+                sha256->digest);
+    #else
+            MMCAU_SHA256_HashN((byte*)data, len/WC_SHA256_BLOCK_SIZE,
+                sha256->digest);
+    #endif
+            }
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+#elif defined(WOLFSSL_PIC32MZ_HASH)
+    #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
+
+#elif defined(STM32_HASH_SHA2)
+
+    /* Supports CubeMX HAL or Standard Peripheral Library */
+
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        (void)devId;
+        (void)heap;
+
+        wc_Stm32_Hash_Init(&sha256->stmCtx);
+        return 0;
+    }
+
+    int wc_Sha256Update(wc_Sha256* sha256, const byte* data, word32 len)
+    {
+        int ret = 0;
+
+        if (sha256 == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Update(&sha256->stmCtx,
+                HASH_AlgoSelection_SHA256, data, len);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+    int wc_Sha256Final(wc_Sha256* sha256, byte* hash)
+    {
+        int ret = 0;
+
+        if (sha256 == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Final(&sha256->stmCtx,
+                HASH_AlgoSelection_SHA256, hash, WC_SHA256_DIGEST_SIZE);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+
+        (void)wc_InitSha256(sha256); /* reset state */
+
+        return ret;
+    }
+
+#elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
+    /* functions defined in wolfcrypt/src/port/caam/caam_sha256.c */
+
+#elif defined(WOLFSSL_AFALG_HASH)
+    /* implemented in wolfcrypt/src/port/af_alg/afalg_hash.c */
+
+#elif defined(WOLFSSL_DEVCRYPTO_HASH)
+    /* implemented in wolfcrypt/src/port/devcrypto/devcrypt_hash.c */
+
+#elif defined(WOLFSSL_SCE) && !defined(WOLFSSL_SCE_NO_HASH)
+    #include "hal_data.h"
+
+    #ifndef WOLFSSL_SCE_SHA256_HANDLE
+        #define WOLFSSL_SCE_SHA256_HANDLE g_sce_hash_0
+    #endif
+
+    #define WC_SHA256_DIGEST_WORD_SIZE 16
+    #define XTRANSFORM(S, D) wc_Sha256SCE_XTRANSFORM((S), (D))
+    static int wc_Sha256SCE_XTRANSFORM(wc_Sha256* sha256, const byte* data)
+    {
+        if (WOLFSSL_SCE_GSCE_HANDLE.p_cfg->endian_flag ==
+                CRYPTO_WORD_ENDIAN_LITTLE)
+        {
+            ByteReverseWords((word32*)data, (word32*)data,
+                    WC_SHA256_BLOCK_SIZE);
+            ByteReverseWords(sha256->digest, sha256->digest,
+                    WC_SHA256_DIGEST_SIZE);
+        }
+
+        if (WOLFSSL_SCE_SHA256_HANDLE.p_api->hashUpdate(
+                    WOLFSSL_SCE_SHA256_HANDLE.p_ctrl, (word32*)data,
+                    WC_SHA256_DIGEST_WORD_SIZE, sha256->digest) != SSP_SUCCESS){
+            WOLFSSL_MSG("Unexpected hardware return value");
+            return WC_HW_E;
+        }
+
+        if (WOLFSSL_SCE_GSCE_HANDLE.p_cfg->endian_flag ==
+                CRYPTO_WORD_ENDIAN_LITTLE)
+        {
+            ByteReverseWords((word32*)data, (word32*)data,
+                    WC_SHA256_BLOCK_SIZE);
+            ByteReverseWords(sha256->digest, sha256->digest,
+                    WC_SHA256_DIGEST_SIZE);
+        }
+
+        return 0;
+    }
+
+
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        int ret = 0;
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        sha256->heap = heap;
+
+        ret = InitSha256(sha256);
+        if (ret != 0)
+            return ret;
+
+        (void)devId;
+
+        return ret;
+    }
+
+#elif defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+
+    #define NEED_SOFT_SHA256
+
+    static int InitSha256(wc_Sha256* sha256)
+    {
+        int ret = 0;
+
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        XMEMSET(sha256->digest, 0, sizeof(sha256->digest));
+        sha256->digest[0] = 0x6A09E667L;
+        sha256->digest[1] = 0xBB67AE85L;
+        sha256->digest[2] = 0x3C6EF372L;
+        sha256->digest[3] = 0xA54FF53AL;
+        sha256->digest[4] = 0x510E527FL;
+        sha256->digest[5] = 0x9B05688CL;
+        sha256->digest[6] = 0x1F83D9ABL;
+        sha256->digest[7] = 0x5BE0CD19L;
+
+        sha256->buffLen = 0;
+        sha256->loLen   = 0;
+        sha256->hiLen   = 0;
+
+        /* always start firstblock = 1 when using hw engine */
+        sha256->ctx.isfirstblock = 1;
+        sha256->ctx.sha_type = SHA2_256;
+        if(sha256->ctx.mode == ESP32_SHA_HW) {
+            /* release hw */
+            esp_sha_hw_unlock();
+        }
+        /* always set mode as INIT
+        *  whether using HW or SW is determined at first call of update()
+        */
+        sha256->ctx.mode = ESP32_SHA_INIT;
+
+        return ret;
+    }
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        int ret = 0;
+
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        XMEMSET(sha256, 0, sizeof(wc_Sha256));
+        sha256->ctx.mode = ESP32_SHA_INIT;
+        sha256->ctx.isfirstblock = 1;
+        (void)devId;
+
+        ret = InitSha256(sha256);
+
+        return ret;
+    }
+
+#elif defined(WOLFSSL_RENESAS_TSIP_CRYPT) && \
+    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH)
+
+    /* implemented in wolfcrypt/src/port/Renesas/renesas_tsip_sha.c */
+
+#else
+    #define NEED_SOFT_SHA256
+
+    int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
+    {
+        int ret = 0;
+        if (sha256 == NULL)
+            return BAD_FUNC_ARG;
+
+        sha256->heap = heap;
+    #ifdef WOLF_CRYPTO_CB
+        sha256->devId = devId;
+        sha256->devCtx = NULL;
+    #endif
+
+        ret = InitSha256(sha256);
+        if (ret != 0)
+            return ret;
+
+    #ifdef WOLFSSL_SMALL_STACK_CACHE
+        sha256->W = NULL;
+    #endif
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA256)
+        ret = wolfAsync_DevCtxInit(&sha256->asyncDev,
+                            WOLFSSL_ASYNC_MARKER_SHA256, sha256->heap, devId);
+    #else
+        (void)devId;
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        return ret;
+    }
+#endif /* End Hardware Acceleration */
+
+#ifdef NEED_SOFT_SHA256
+
+    static const ALIGN32 word32 K[64] = {
+        0x428A2F98L, 0x71374491L, 0xB5C0FBCFL, 0xE9B5DBA5L, 0x3956C25BL,
+        0x59F111F1L, 0x923F82A4L, 0xAB1C5ED5L, 0xD807AA98L, 0x12835B01L,
+        0x243185BEL, 0x550C7DC3L, 0x72BE5D74L, 0x80DEB1FEL, 0x9BDC06A7L,
+        0xC19BF174L, 0xE49B69C1L, 0xEFBE4786L, 0x0FC19DC6L, 0x240CA1CCL,
+        0x2DE92C6FL, 0x4A7484AAL, 0x5CB0A9DCL, 0x76F988DAL, 0x983E5152L,
+        0xA831C66DL, 0xB00327C8L, 0xBF597FC7L, 0xC6E00BF3L, 0xD5A79147L,
+        0x06CA6351L, 0x14292967L, 0x27B70A85L, 0x2E1B2138L, 0x4D2C6DFCL,
+        0x53380D13L, 0x650A7354L, 0x766A0ABBL, 0x81C2C92EL, 0x92722C85L,
+        0xA2BFE8A1L, 0xA81A664BL, 0xC24B8B70L, 0xC76C51A3L, 0xD192E819L,
+        0xD6990624L, 0xF40E3585L, 0x106AA070L, 0x19A4C116L, 0x1E376C08L,
+        0x2748774CL, 0x34B0BCB5L, 0x391C0CB3L, 0x4ED8AA4AL, 0x5B9CCA4FL,
+        0x682E6FF3L, 0x748F82EEL, 0x78A5636FL, 0x84C87814L, 0x8CC70208L,
+        0x90BEFFFAL, 0xA4506CEBL, 0xBEF9A3F7L, 0xC67178F2L
+    };
+
+/* Both versions of Ch and Maj are logically the same, but with the second set
+    the compilers can recognize them better for optimization */
+#ifdef WOLFSSL_SHA256_BY_SPEC
+    /* SHA256 math based on specification */
+    #define Ch(x,y,z)       ((z) ^ ((x) & ((y) ^ (z))))
+    #define Maj(x,y,z)      ((((x) | (y)) & (z)) | ((x) & (y)))
+#else
+    /* SHA256 math reworked for easier compiler optimization */
+    #define Ch(x,y,z)       ((((y) ^ (z)) & (x)) ^ (z))
+    #define Maj(x,y,z)      ((((x) ^ (y)) & ((y) ^ (z))) ^ (y))
+#endif
+    #define R(x, n)         (((x) & 0xFFFFFFFFU) >> (n))
+
+    #define S(x, n)         rotrFixed(x, n)
+    #define Sigma0(x)       (S(x, 2)  ^ S(x, 13) ^ S(x, 22))
+    #define Sigma1(x)       (S(x, 6)  ^ S(x, 11) ^ S(x, 25))
+    #define Gamma0(x)       (S(x, 7)  ^ S(x, 18) ^ R(x, 3))
+    #define Gamma1(x)       (S(x, 17) ^ S(x, 19) ^ R(x, 10))
+
+    #define a(i) S[(0-i) & 7]
+    #define b(i) S[(1-i) & 7]
+    #define c(i) S[(2-i) & 7]
+    #define d(i) S[(3-i) & 7]
+    #define e(i) S[(4-i) & 7]
+    #define f(i) S[(5-i) & 7]
+    #define g(i) S[(6-i) & 7]
+    #define h(i) S[(7-i) & 7]
+
+    #ifndef XTRANSFORM
+         #define XTRANSFORM(S, D)         Transform_Sha256((S),(D))
+    #endif
+
+#ifndef SHA256_MANY_REGISTERS
+    #define RND(j) \
+         t0 = h(j) + Sigma1(e(j)) + Ch(e(j), f(j), g(j)) + K[i+j] + W[i+j]; \
+         t1 = Sigma0(a(j)) + Maj(a(j), b(j), c(j)); \
+         d(j) += t0; \
+         h(j)  = t0 + t1
+
+    static int Transform_Sha256(wc_Sha256* sha256, const byte* data)
+    {
+        word32 S[8], t0, t1;
+        int i;
+
+    #ifdef WOLFSSL_SMALL_STACK_CACHE
+        word32* W = sha256->W;
+        if (W == NULL) {
+            W = (word32*)XMALLOC(sizeof(word32) * WC_SHA256_BLOCK_SIZE, NULL,
+                                                           DYNAMIC_TYPE_DIGEST);
+            if (W == NULL)
+                return MEMORY_E;
+            sha256->W = W;
+        }
+    #elif defined(WOLFSSL_SMALL_STACK)
+        word32* W;
+        W = (word32*)XMALLOC(sizeof(word32) * WC_SHA256_BLOCK_SIZE, NULL,
+                                                       DYNAMIC_TYPE_TMP_BUFFER);
+        if (W == NULL)
+            return MEMORY_E;
+    #else
+        word32 W[WC_SHA256_BLOCK_SIZE];
+    #endif
+
+        /* Copy context->state[] to working vars */
+        for (i = 0; i < 8; i++)
+            S[i] = sha256->digest[i];
+
+        for (i = 0; i < 16; i++)
+            W[i] = *((word32*)&data[i*sizeof(word32)]);
+
+        for (i = 16; i < WC_SHA256_BLOCK_SIZE; i++)
+            W[i] = Gamma1(W[i-2]) + W[i-7] + Gamma0(W[i-15]) + W[i-16];
+
+    #ifdef USE_SLOW_SHA256
+        /* not unrolled - ~2k smaller and ~25% slower */
+        for (i = 0; i < WC_SHA256_BLOCK_SIZE; i += 8) {
+            int j;
+            for (j = 0; j < 8; j++) { /* braces needed here for macros {} */
+                RND(j);
+            }
+        }
+    #else
+        /* partially loop unrolled */
+        for (i = 0; i < WC_SHA256_BLOCK_SIZE; i += 8) {
+            RND(0); RND(1); RND(2); RND(3);
+            RND(4); RND(5); RND(6); RND(7);
+        }
+    #endif /* USE_SLOW_SHA256 */
+
+        /* Add the working vars back into digest state[] */
+        for (i = 0; i < 8; i++) {
+            sha256->digest[i] += S[i];
+        }
+
+    #if defined(WOLFSSL_SMALL_STACK) && !defined(WOLFSSL_SMALL_STACK_CACHE)
+        XFREE(W, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    #endif
+        return 0;
+    }
+#else
+    /* SHA256 version that keeps all data in registers */
+    #define SCHED1(j) (W[j] = *((word32*)&data[j*sizeof(word32)]))
+    #define SCHED(j) (               \
+                   W[ j     & 15] += \
+            Gamma1(W[(j-2)  & 15])+  \
+                   W[(j-7)  & 15] +  \
+            Gamma0(W[(j-15) & 15])   \
+        )
+
+    #define RND1(j) \
+         t0 = h(j) + Sigma1(e(j)) + Ch(e(j), f(j), g(j)) + K[i+j] + SCHED1(j); \
+         t1 = Sigma0(a(j)) + Maj(a(j), b(j), c(j)); \
+         d(j) += t0; \
+         h(j)  = t0 + t1
+    #define RNDN(j) \
+         t0 = h(j) + Sigma1(e(j)) + Ch(e(j), f(j), g(j)) + K[i+j] + SCHED(j); \
+         t1 = Sigma0(a(j)) + Maj(a(j), b(j), c(j)); \
+         d(j) += t0; \
+         h(j)  = t0 + t1
+
+    static int Transform_Sha256(wc_Sha256* sha256, const byte* data)
+    {
+        word32 S[8], t0, t1;
+        int i;
+        word32 W[WC_SHA256_BLOCK_SIZE/sizeof(word32)];
+
+        /* Copy digest to working vars */
+        S[0] = sha256->digest[0];
+        S[1] = sha256->digest[1];
+        S[2] = sha256->digest[2];
+        S[3] = sha256->digest[3];
+        S[4] = sha256->digest[4];
+        S[5] = sha256->digest[5];
+        S[6] = sha256->digest[6];
+        S[7] = sha256->digest[7];
+
+        i = 0;
+        RND1( 0); RND1( 1); RND1( 2); RND1( 3);
+        RND1( 4); RND1( 5); RND1( 6); RND1( 7);
+        RND1( 8); RND1( 9); RND1(10); RND1(11);
+        RND1(12); RND1(13); RND1(14); RND1(15);
+        /* 64 operations, partially loop unrolled */
+        for (i = 16; i < 64; i += 16) {
+            RNDN( 0); RNDN( 1); RNDN( 2); RNDN( 3);
+            RNDN( 4); RNDN( 5); RNDN( 6); RNDN( 7);
+            RNDN( 8); RNDN( 9); RNDN(10); RNDN(11);
+            RNDN(12); RNDN(13); RNDN(14); RNDN(15);
+        }
+
+        /* Add the working vars back into digest */
+        sha256->digest[0] += S[0];
+        sha256->digest[1] += S[1];
+        sha256->digest[2] += S[2];
+        sha256->digest[3] += S[3];
+        sha256->digest[4] += S[4];
+        sha256->digest[5] += S[5];
+        sha256->digest[6] += S[6];
+        sha256->digest[7] += S[7];
+
+        return 0;
+    }
+#endif /* SHA256_MANY_REGISTERS */
+#endif
+/* End wc_ software implementation */
+
+
+#ifdef XTRANSFORM
+
+    static WC_INLINE void AddLength(wc_Sha256* sha256, word32 len)
+    {
+        word32 tmp = sha256->loLen;
+        if ((sha256->loLen += len) < tmp) {
+            sha256->hiLen++;                       /* carry low to high */
+        }
+    }
+
+    /* do block size increments/updates */
+    static WC_INLINE int Sha256Update(wc_Sha256* sha256, const byte* data, word32 len)
+    {
+        int ret = 0;
+        word32 blocksLen;
+        byte* local;
+
+        if (sha256 == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        if (data == NULL && len == 0) {
+            /* valid, but do nothing */
+            return 0;
+        }
+
+        /* check that internal buffLen is valid */
+        if (sha256->buffLen >= WC_SHA256_BLOCK_SIZE) {
+            return BUFFER_E;
+        }
+
+        /* add length for final */
+        AddLength(sha256, len);
+
+        local = (byte*)sha256->buffer;
+
+        /* process any remainder from previous operation */
+        if (sha256->buffLen > 0) {
+            blocksLen = min(len, WC_SHA256_BLOCK_SIZE - sha256->buffLen);
+            XMEMCPY(&local[sha256->buffLen], data, blocksLen);
+
+            sha256->buffLen += blocksLen;
+            data            += blocksLen;
+            len             -= blocksLen;
+
+            if (sha256->buffLen == WC_SHA256_BLOCK_SIZE) {
+            #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+                #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+                if (!IS_INTEL_AVX1(intel_flags) && !IS_INTEL_AVX2(intel_flags))
+                #endif
+                {
+                    ByteReverseWords(sha256->buffer, sha256->buffer,
+                        WC_SHA256_BLOCK_SIZE);
+                }
+            #endif
+
+            #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+                !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+                if (sha256->ctx.mode == ESP32_SHA_INIT){
+                    esp_sha_try_hw_lock(&sha256->ctx);
+                }
+                if (sha256->ctx.mode == ESP32_SHA_SW){
+                    ret = XTRANSFORM(sha256, (const byte*)local);
+                } else {
+                    esp_sha256_process(sha256, (const byte*)local);
+                }
+            #else
+                ret = XTRANSFORM(sha256, (const byte*)local);
+            #endif
+
+                if (ret == 0)
+                    sha256->buffLen = 0;
+                else
+                    len = 0; /* error */
+            }
+        }
+
+        /* process blocks */
+    #ifdef XTRANSFORM_LEN
+        #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+        if (Transform_Sha256_Len_p != NULL)
+        #endif
+        {
+            /* get number of blocks */
+            /* 64-1 = 0x3F (~ Inverted = 0xFFFFFFC0) */
+            /* len (masked by 0xFFFFFFC0) returns block aligned length */
+            blocksLen = len & ~(WC_SHA256_BLOCK_SIZE-1);
+            if (blocksLen > 0) {
+                /* Byte reversal and alignment handled in function if required */
+                XTRANSFORM_LEN(sha256, data, blocksLen);
+                data += blocksLen;
+                len  -= blocksLen;
+            }
+        }
+        #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+        else
+        #endif
+    #endif /* XTRANSFORM_LEN */
+    #if !defined(XTRANSFORM_LEN) || defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+        {
+            while (len >= WC_SHA256_BLOCK_SIZE) {
+                word32* local32 = sha256->buffer;
+                /* optimization to avoid memcpy if data pointer is properly aligned */
+                /* Intel transform function requires use of sha256->buffer */
+                /* Little Endian requires byte swap, so can't use data directly */
+            #if defined(WC_HASH_DATA_ALIGNMENT) && !defined(LITTLE_ENDIAN_ORDER) && \
+                !defined(HAVE_INTEL_AVX1) && !defined(HAVE_INTEL_AVX2)
+                if (((size_t)data % WC_HASH_DATA_ALIGNMENT) == 0) {
+                    local32 = (word32*)data;
+                }
+                else
+            #endif
+                {
+                    XMEMCPY(local32, data, WC_SHA256_BLOCK_SIZE);
+                }
+
+                data += WC_SHA256_BLOCK_SIZE;
+                len  -= WC_SHA256_BLOCK_SIZE;
+
+            #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+                #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+                if (!IS_INTEL_AVX1(intel_flags) && !IS_INTEL_AVX2(intel_flags))
+                #endif
+                {
+                    ByteReverseWords(local32, local32, WC_SHA256_BLOCK_SIZE);
+                }
+            #endif
+
+            #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+                !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+                if (sha256->ctx.mode == ESP32_SHA_INIT){
+                    esp_sha_try_hw_lock(&sha256->ctx);
+                }
+                if (sha256->ctx.mode == ESP32_SHA_SW){
+                    ret = XTRANSFORM(sha256, (const byte*)local32);
+                } else {
+                    esp_sha256_process(sha256, (const byte*)local32);
+                }
+            #else
+                ret = XTRANSFORM(sha256, (const byte*)local32);
+            #endif
+
+                if (ret != 0)
+                    break;
+            }
+        }
+    #endif
+
+        /* save remainder */
+        if (len > 0) {
+            XMEMCPY(local, data, len);
+            sha256->buffLen = len;
+        }
+
+        return ret;
+    }
+
+    int wc_Sha256Update(wc_Sha256* sha256, const byte* data, word32 len)
+    {
+        if (sha256 == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        if (data == NULL && len == 0) {
+            /* valid, but do nothing */
+            return 0;
+        }
+
+    #ifdef WOLF_CRYPTO_CB
+        if (sha256->devId != INVALID_DEVID) {
+            int ret = wc_CryptoCb_Sha256Hash(sha256, data, len, NULL);
+            if (ret != CRYPTOCB_UNAVAILABLE)
+                return ret;
+            /* fall-through when unavailable */
+        }
+    #endif
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA256)
+        if (sha256->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA256) {
+        #if defined(HAVE_INTEL_QA)
+            return IntelQaSymSha256(&sha256->asyncDev, NULL, data, len);
+        #endif
+        }
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        return Sha256Update(sha256, data, len);
+    }
+
+    static WC_INLINE int Sha256Final(wc_Sha256* sha256)
+    {
+
+        int ret;
+        byte* local;
+
+        if (sha256 == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        local = (byte*)sha256->buffer;
+        local[sha256->buffLen++] = 0x80; /* add 1 */
+
+        /* pad with zeros */
+        if (sha256->buffLen > WC_SHA256_PAD_SIZE) {
+            XMEMSET(&local[sha256->buffLen], 0,
+                WC_SHA256_BLOCK_SIZE - sha256->buffLen);
+            sha256->buffLen += WC_SHA256_BLOCK_SIZE - sha256->buffLen;
+
+        #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+            #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+            if (!IS_INTEL_AVX1(intel_flags) && !IS_INTEL_AVX2(intel_flags))
+            #endif
+            {
+                ByteReverseWords(sha256->buffer, sha256->buffer,
+                                                      WC_SHA256_BLOCK_SIZE);
+            }
+        #endif
+
+        #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+             !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+            if (sha256->ctx.mode == ESP32_SHA_INIT) {
+                esp_sha_try_hw_lock(&sha256->ctx);
+            }
+            if (sha256->ctx.mode == ESP32_SHA_SW) {
+                ret = XTRANSFORM(sha256, (const byte*)local);
+            } else {
+                ret = esp_sha256_process(sha256, (const byte*)local);
+            }
+        #else
+            ret = XTRANSFORM(sha256, (const byte*)local);
+        #endif
+            if (ret != 0)
+                return ret;
+
+            sha256->buffLen = 0;
+        }
+        XMEMSET(&local[sha256->buffLen], 0,
+            WC_SHA256_PAD_SIZE - sha256->buffLen);
+
+        /* put lengths in bits */
+        sha256->hiLen = (sha256->loLen >> (8 * sizeof(sha256->loLen) - 3)) +
+                                                         (sha256->hiLen << 3);
+        sha256->loLen = sha256->loLen << 3;
+
+        /* store lengths */
+    #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
+        #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+        if (!IS_INTEL_AVX1(intel_flags) && !IS_INTEL_AVX2(intel_flags))
+        #endif
+        {
+            ByteReverseWords(sha256->buffer, sha256->buffer,
+                WC_SHA256_BLOCK_SIZE);
+        }
+    #endif
+        /* ! length ordering dependent on digest endian type ! */
+        XMEMCPY(&local[WC_SHA256_PAD_SIZE], &sha256->hiLen, sizeof(word32));
+        XMEMCPY(&local[WC_SHA256_PAD_SIZE + sizeof(word32)], &sha256->loLen,
+                sizeof(word32));
+
+    #if defined(FREESCALE_MMCAU_SHA) || defined(HAVE_INTEL_AVX1) || \
+        defined(HAVE_INTEL_AVX2)
+        /* Kinetis requires only these bytes reversed */
+        #if defined(HAVE_INTEL_AVX1) || defined(HAVE_INTEL_AVX2)
+        if (IS_INTEL_AVX1(intel_flags) || IS_INTEL_AVX2(intel_flags))
+        #endif
+        {
+            ByteReverseWords(
+                &sha256->buffer[WC_SHA256_PAD_SIZE / sizeof(word32)],
+                &sha256->buffer[WC_SHA256_PAD_SIZE / sizeof(word32)],
+                2 * sizeof(word32));
+        }
+    #endif
+
+    #if defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+         !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+        if (sha256->ctx.mode == ESP32_SHA_INIT) {
+            esp_sha_try_hw_lock(&sha256->ctx);
+        }
+        if (sha256->ctx.mode == ESP32_SHA_SW) {
+            ret = XTRANSFORM(sha256, (const byte*)local);
+        } else {
+            ret = esp_sha256_digest_process(sha256, 1);
+        }
+    #else
+        ret = XTRANSFORM(sha256, (const byte*)local);
+    #endif
+
+        return ret;
+    }
+
+    int wc_Sha256FinalRaw(wc_Sha256* sha256, byte* hash)
+    {
+    #ifdef LITTLE_ENDIAN_ORDER
+        word32 digest[WC_SHA256_DIGEST_SIZE / sizeof(word32)];
+    #endif
+
+        if (sha256 == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+    #ifdef LITTLE_ENDIAN_ORDER
+        ByteReverseWords((word32*)digest, (word32*)sha256->digest,
+                                                         WC_SHA256_DIGEST_SIZE);
+        XMEMCPY(hash, digest, WC_SHA256_DIGEST_SIZE);
+    #else
+        XMEMCPY(hash, sha256->digest, WC_SHA256_DIGEST_SIZE);
+    #endif
+
+        return 0;
+    }
+
+    int wc_Sha256Final(wc_Sha256* sha256, byte* hash)
+    {
+        int ret;
+
+        if (sha256 == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+    #ifdef WOLF_CRYPTO_CB
+        if (sha256->devId != INVALID_DEVID) {
+            ret = wc_CryptoCb_Sha256Hash(sha256, NULL, 0, hash);
+            if (ret != CRYPTOCB_UNAVAILABLE)
+                return ret;
+            /* fall-through when unavailable */
+        }
+    #endif
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA256)
+        if (sha256->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA256) {
+        #if defined(HAVE_INTEL_QA)
+            return IntelQaSymSha256(&sha256->asyncDev, hash, NULL,
+                                            WC_SHA256_DIGEST_SIZE);
+        #endif
+        }
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        ret = Sha256Final(sha256);
+        if (ret != 0)
+            return ret;
+
+    #if defined(LITTLE_ENDIAN_ORDER)
+        ByteReverseWords(sha256->digest, sha256->digest, WC_SHA256_DIGEST_SIZE);
+    #endif
+        XMEMCPY(hash, sha256->digest, WC_SHA256_DIGEST_SIZE);
+
+        return InitSha256(sha256);  /* reset state */
+    }
+
+#endif /* XTRANSFORM */
+
+#ifdef WOLFSSL_SHA224
+
+#ifdef STM32_HASH_SHA2
+
+    /* Supports CubeMX HAL or Standard Peripheral Library */
+
+    int wc_InitSha224_ex(wc_Sha224* sha224, void* heap, int devId)
+    {
+        if (sha224 == NULL)
+            return BAD_FUNC_ARG;
+
+        (void)devId;
+        (void)heap;
+
+        wc_Stm32_Hash_Init(&sha224->stmCtx);
+        return 0;
+    }
+
+    int wc_Sha224Update(wc_Sha224* sha224, const byte* data, word32 len)
+    {
+        int ret = 0;
+
+        if (sha224 == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Update(&sha224->stmCtx,
+                HASH_AlgoSelection_SHA224, data, len);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+        return ret;
+    }
+
+    int wc_Sha224Final(wc_Sha224* sha224, byte* hash)
+    {
+        int ret = 0;
+
+        if (sha224 == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        ret = wolfSSL_CryptHwMutexLock();
+        if (ret == 0) {
+            ret = wc_Stm32_Hash_Final(&sha224->stmCtx,
+                HASH_AlgoSelection_SHA224, hash, WC_SHA224_DIGEST_SIZE);
+            wolfSSL_CryptHwMutexUnLock();
+        }
+
+        (void)wc_InitSha224(sha224); /* reset state */
+
+        return ret;
+    }
+
+#elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
+    /* functions defined in wolfcrypt/src/port/caam/caam_sha256.c */
+
+#elif defined(WOLFSSL_AFALG_HASH)
+    #error SHA224 currently not supported with AF_ALG enabled
+
+#elif defined(WOLFSSL_DEVCRYPTO_HASH)
+    /* implemented in wolfcrypt/src/port/devcrypto/devcrypt_hash.c */
+
+#else
+
+    #define NEED_SOFT_SHA224
+
+
+    static int InitSha224(wc_Sha224* sha224)
+    {
+        int ret = 0;
+
+        if (sha224 == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+        sha224->digest[0] = 0xc1059ed8;
+        sha224->digest[1] = 0x367cd507;
+        sha224->digest[2] = 0x3070dd17;
+        sha224->digest[3] = 0xf70e5939;
+        sha224->digest[4] = 0xffc00b31;
+        sha224->digest[5] = 0x68581511;
+        sha224->digest[6] = 0x64f98fa7;
+        sha224->digest[7] = 0xbefa4fa4;
+
+        sha224->buffLen = 0;
+        sha224->loLen   = 0;
+        sha224->hiLen   = 0;
+
+    #if defined(HAVE_INTEL_AVX1)|| defined(HAVE_INTEL_AVX2)
+        /* choose best Transform function under this runtime environment */
+        Sha256_SetTransform();
+    #endif
+    #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+        sha224->flags = 0;
+    #endif
+
+        return ret;
+    }
+
+#endif
+
+#ifdef NEED_SOFT_SHA224
+    int wc_InitSha224_ex(wc_Sha224* sha224, void* heap, int devId)
+    {
+        int ret = 0;
+
+        if (sha224 == NULL)
+            return BAD_FUNC_ARG;
+
+        sha224->heap = heap;
+
+        ret = InitSha224(sha224);
+        if (ret != 0)
+            return ret;
+
+    #ifdef WOLFSSL_SMALL_STACK_CACHE
+        sha224->W = NULL;
+    #endif
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA224)
+        ret = wolfAsync_DevCtxInit(&sha224->asyncDev,
+                            WOLFSSL_ASYNC_MARKER_SHA224, sha224->heap, devId);
+    #else
+        (void)devId;
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        return ret;
+    }
+
+    int wc_Sha224Update(wc_Sha224* sha224, const byte* data, word32 len)
+    {
+        int ret;
+
+        if (sha224 == NULL || (data == NULL && len > 0)) {
+            return BAD_FUNC_ARG;
+        }
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA224)
+        if (sha224->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA224) {
+        #if defined(HAVE_INTEL_QA)
+            return IntelQaSymSha224(&sha224->asyncDev, NULL, data, len);
+        #endif
+        }
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        ret = Sha256Update((wc_Sha256*)sha224, data, len);
+
+        return ret;
+    }
+
+    int wc_Sha224Final(wc_Sha224* sha224, byte* hash)
+    {
+        int ret;
+
+        if (sha224 == NULL || hash == NULL) {
+            return BAD_FUNC_ARG;
+        }
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA224)
+        if (sha224->asyncDev.marker == WOLFSSL_ASYNC_MARKER_SHA224) {
+        #if defined(HAVE_INTEL_QA)
+            return IntelQaSymSha224(&sha224->asyncDev, hash, NULL,
+                                            WC_SHA224_DIGEST_SIZE);
+        #endif
+        }
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+        ret = Sha256Final((wc_Sha256*)sha224);
+        if (ret != 0)
+            return ret;
+
+    #if defined(LITTLE_ENDIAN_ORDER)
+        ByteReverseWords(sha224->digest, sha224->digest, WC_SHA224_DIGEST_SIZE);
+    #endif
+        XMEMCPY(hash, sha224->digest, WC_SHA224_DIGEST_SIZE);
+
+        return InitSha224(sha224);  /* reset state */
+    }
+#endif /* end of SHA224 software implementation */
+
+    int wc_InitSha224(wc_Sha224* sha224)
+    {
+        return wc_InitSha224_ex(sha224, NULL, INVALID_DEVID);
+    }
+
+    void wc_Sha224Free(wc_Sha224* sha224)
+    {
+        if (sha224 == NULL)
+            return;
+
+#ifdef WOLFSSL_SMALL_STACK_CACHE
+    if (sha224->W != NULL) {
+        XFREE(sha224->W, NULL, DYNAMIC_TYPE_DIGEST);
+        sha224->W = NULL;
+    }
+#endif
+
+    #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA224)
+        wolfAsync_DevCtxFree(&sha224->asyncDev, WOLFSSL_ASYNC_MARKER_SHA224);
+    #endif /* WOLFSSL_ASYNC_CRYPT */
+
+    #ifdef WOLFSSL_PIC32MZ_HASH
+        wc_Sha256Pic32Free(sha224);
+    #endif
+    }
+#endif /* WOLFSSL_SHA224 */
+
+
+int wc_InitSha256(wc_Sha256* sha256)
+{
+    return wc_InitSha256_ex(sha256, NULL, INVALID_DEVID);
+}
+
+void wc_Sha256Free(wc_Sha256* sha256)
+{
+    if (sha256 == NULL)
+        return;
+
+#ifdef WOLFSSL_SMALL_STACK_CACHE
+    if (sha256->W != NULL) {
+        XFREE(sha256->W, NULL, DYNAMIC_TYPE_DIGEST);
+        sha256->W = NULL;
+    }
+#endif
+
+#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_SHA256)
+    wolfAsync_DevCtxFree(&sha256->asyncDev, WOLFSSL_ASYNC_MARKER_SHA256);
+#endif /* WOLFSSL_ASYNC_CRYPT */
+#ifdef WOLFSSL_PIC32MZ_HASH
+    wc_Sha256Pic32Free(sha256);
+#endif
+#if defined(WOLFSSL_AFALG_HASH)
+    if (sha256->alFd > 0) {
+        close(sha256->alFd);
+        sha256->alFd = -1; /* avoid possible double close on socket */
+    }
+    if (sha256->rdFd > 0) {
+        close(sha256->rdFd);
+        sha256->rdFd = -1; /* avoid possible double close on socket */
+    }
+#endif /* WOLFSSL_AFALG_HASH */
+#ifdef WOLFSSL_DEVCRYPTO_HASH
+    wc_DevCryptoFree(&sha256->ctx);
+#endif /* WOLFSSL_DEVCRYPTO */
+#if (defined(WOLFSSL_AFALG_HASH) && defined(WOLFSSL_AFALG_HASH_KEEP)) || \
+    (defined(WOLFSSL_DEVCRYPTO_HASH) && defined(WOLFSSL_DEVCRYPTO_HASH_KEEP)) || \
+    (defined(WOLFSSL_RENESAS_TSIP_CRYPT) && \
+    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH))
+    if (sha256->msg != NULL) {
+        XFREE(sha256->msg, sha256->heap, DYNAMIC_TYPE_TMP_BUFFER);
+        sha256->msg = NULL;
+    }
+#endif
+}
+
+#endif /* !WOLFSSL_TI_HASH */
+#endif /* HAVE_FIPS */
+
+
+#ifndef WOLFSSL_TI_HASH
+#ifdef WOLFSSL_SHA224
+    int wc_Sha224GetHash(wc_Sha224* sha224, byte* hash)
+    {
+        int ret;
+        wc_Sha224 tmpSha224;
+
+        if (sha224 == NULL || hash == NULL)
+            return BAD_FUNC_ARG;
+
+        ret = wc_Sha224Copy(sha224, &tmpSha224);
+        if (ret == 0) {
+            ret = wc_Sha224Final(&tmpSha224, hash);
+            wc_Sha224Free(&tmpSha224);
+        }
+        return ret;
+    }
+    int wc_Sha224Copy(wc_Sha224* src, wc_Sha224* dst)
+    {
+        int ret = 0;
+
+        if (src == NULL || dst == NULL)
+            return BAD_FUNC_ARG;
+
+        XMEMCPY(dst, src, sizeof(wc_Sha224));
+    #ifdef WOLFSSL_SMALL_STACK_CACHE
+        dst->W = NULL;
+    #endif
+
+    #ifdef WOLFSSL_ASYNC_CRYPT
+        ret = wolfAsync_DevCopy(&src->asyncDev, &dst->asyncDev);
+    #endif
+    #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+        dst->flags |= WC_HASH_FLAG_ISCOPY;
+    #endif
+
+        return ret;
+    }
+
+#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+    int wc_Sha224SetFlags(wc_Sha224* sha224, word32 flags)
+    {
+        if (sha224) {
+            sha224->flags = flags;
+        }
+        return 0;
+    }
+    int wc_Sha224GetFlags(wc_Sha224* sha224, word32* flags)
+    {
+        if (sha224 && flags) {
+            *flags = sha224->flags;
+        }
+        return 0;
+    }
+#endif
+
+#endif /* WOLFSSL_SHA224 */
+
+#ifdef WOLFSSL_AFALG_HASH
+    /* implemented in wolfcrypt/src/port/af_alg/afalg_hash.c */
+
+#elif defined(WOLFSSL_DEVCRYPTO_HASH)
+    /* implemented in wolfcrypt/src/port/devcrypto/devcrypt_hash.c */
+
+#elif defined(WOLFSSL_RENESAS_TSIP_CRYPT) && \
+    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH)
+
+    /* implemented in wolfcrypt/src/port/Renesas/renesas_tsip_sha.c */
+#else
+
+int wc_Sha256GetHash(wc_Sha256* sha256, byte* hash)
+{
+    int ret;
+    wc_Sha256 tmpSha256;
+
+    if (sha256 == NULL || hash == NULL)
+        return BAD_FUNC_ARG;
+
+#if  defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+    if(sha256->ctx.mode == ESP32_SHA_INIT){
+        esp_sha_try_hw_lock(&sha256->ctx);
+    }
+    if(sha256->ctx.mode == ESP32_SHA_HW)
+    {
+        esp_sha256_digest_process(sha256, 0);
+    }
+#endif
+    ret = wc_Sha256Copy(sha256, &tmpSha256);
+    if (ret == 0) {
+        ret = wc_Sha256Final(&tmpSha256, hash);
+#if  defined(WOLFSSL_ESP32WROOM32_CRYPT) && \
+    !defined(NO_WOLFSSL_ESP32WROOM32_CRYPT_HASH)
+        sha256->ctx.mode = ESP32_SHA_SW;
+#endif
+
+        wc_Sha256Free(&tmpSha256);
+    }
+    return ret;
+}
+int wc_Sha256Copy(wc_Sha256* src, wc_Sha256* dst)
+{
+    int ret = 0;
+
+    if (src == NULL || dst == NULL)
+        return BAD_FUNC_ARG;
+
+    XMEMCPY(dst, src, sizeof(wc_Sha256));
+#ifdef WOLFSSL_SMALL_STACK_CACHE
+    dst->W = NULL;
+#endif
+
+#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
+
+#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
+int wc_Sha256SetFlags(wc_Sha256* sha256, word32 flags)
+{
+    if (sha256) {
+        sha256->flags = flags;
+    }
+    return 0;
+}
+int wc_Sha256GetFlags(wc_Sha256* sha256, word32* flags)
+{
+    if (sha256 && flags) {
+        *flags = sha256->flags;
+    }
+    return 0;
+}
+#endif
+#endif /* !WOLFSSL_TI_HASH */
+
+#endif /* NO_SHA256 */