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/* cryptoCellHash.c
*
* Copyright (C) 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>
/* This source is included in wc_port.c */
/* WOLFSSL_CRYPTOCELL_HASH_C is defined by wc_port.c in case compile tries
to include this .c directly */
#ifdef WOLFSSL_CRYPTOCELL_HASH_C
#if !defined(NO_SHA256) && defined(WOLFSSL_CRYPTOCELL)
#include <wolfssl/wolfcrypt/error-crypt.h>
#include <wolfssl/wolfcrypt/logging.h>
#include <wolfssl/wolfcrypt/sha256.h>
#include <wolfssl/wolfcrypt/port/arm/cryptoCell.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
int wc_InitSha256_ex(wc_Sha256* sha256, void* heap, int devId)
{
CRYSError_t ret = 0;
(void)heap;
(void)devId;
if (sha256 == NULL)
return BAD_FUNC_ARG;
XMEMSET(sha256->digest, 0, sizeof(sha256->digest));
/* initializes the HASH context and machine to the supported mode.*/
ret = CRYS_HASH_Init(&sha256->ctx, CRYS_HASH_SHA256_mode);
if (ret != SA_SILIB_RET_OK){
WOLFSSL_MSG("Error CRYS_HASH_Init failed");
}
return ret;
}
int wc_InitSha256(Sha256* sha256)
{
return wc_InitSha256_ex(sha256, NULL, INVALID_DEVID);
}
int wc_Sha256Update(wc_Sha256* sha256, const byte* data, word32 len)
{
CRYSError_t ret = 0;
size_t length;
size_t remaining = len;
byte const * p_cur = data;
if (sha256 == NULL || (data == NULL && len > 0)) {
return BAD_FUNC_ARG;
}
if (data == NULL && len == 0) {
/* valid, but do nothing */
return 0;
}
/* If the input is larger than CC310_MAX_LENGTH_DMA, split into smaller */
do {
length = (remaining > CC310_MAX_LENGTH_DMA) ?
CC310_MAX_LENGTH_DMA : remaining;
ret = CRYS_HASH_Update(&sha256->ctx, (uint8_t *)p_cur, length);
remaining -= length;
p_cur += length;
} while (ret == CRYS_OK && remaining > 0);
return ret;
}
int wc_Sha256Final(wc_Sha256* sha256, byte* hash)
{
CRYSError_t ret = 0;
CRYS_HASH_Result_t hashResult;
if (sha256 == NULL || hash == NULL) {
return BAD_FUNC_ARG;
}
ret = CRYS_HASH_Finish(&sha256->ctx, hashResult);
if (ret != SA_SILIB_RET_OK){
WOLFSSL_MSG("Error CRYS_HASH_Finish failed");
return ret;
}
XMEMCPY(sha256->digest, hashResult, WC_SHA256_DIGEST_SIZE);
XMEMCPY(hash, sha256->digest, WC_SHA256_DIGEST_SIZE);
/* reset state */
return wc_InitSha256_ex(sha256, NULL, INVALID_DEVID);
}
void wc_Sha256Free(wc_Sha256* sha256)
{
if (sha256 == NULL)
return;
}
#endif /* !NO_SHA256 && WOLFSSL_CRYPTOCELL */
#endif /* WOLFSSL_CRYPTOCELL_HASH_C */
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