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78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* Copyright (C) 2019-2020, STMicroelectronics, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file implements ST shared HASH services based on API from mbed TLS
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*/
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/* Includes ------------------------------------------------------------------*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_SHA1_ALT) || defined(MBEDTLS_SHA256_ALT) || defined(MBEDTLS_MD5_ALT)
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#include "hash_stm32.h"
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/* Variables -----------------------------------------------------------------*/
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/* Mutex protection because of one Hash Hw instance is shared over several */
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/* algorithms (SHA-1, SHA-256, MD5 implementations may be enabled together) */
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#if defined(MBEDTLS_THREADING_C)
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mbedtls_threading_mutex_t hash_mutex;
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unsigned char hash_mutex_started = 0;
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#endif /* MBEDTLS_THREADING_C */
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unsigned int hash_context_count = 0;
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/* Functions -----------------------------------------------------------------*/
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/* Implementation that should never be optimized out by the compiler */
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void hash_zeroize(void *v, size_t n)
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{
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volatile unsigned char *p = (unsigned char *)v;
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while (n--) {
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*p++ = 0;
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}
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}
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/* HAL function that should be implemented in the user file */
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/**
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* @brief HASH MSP Initialization
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* This function configures the hardware resources used in this example
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* @param hhash: HASH handle pointer
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* @retval None
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*/
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void HAL_HASH_MspInit(HASH_HandleTypeDef *hhash)
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{
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/* Peripheral clock enable */
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__HAL_RCC_HASH_CLK_ENABLE();
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}
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/**
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* @brief HASH MSP De-Initialization
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* This function freeze the hardware resources used in this example
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* @param hhash: HASH handle pointer
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* @retval None
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*/
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void HAL_HASH_MspDeInit(HASH_HandleTypeDef *hhash)
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{
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/* Peripheral clock disable */
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__HAL_RCC_HASH_CLK_DISABLE();
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}
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#endif /* MBEDTLS_SHA1_ALT or MBEDTLS_SHA256_ALT or MBEDTLS_MD5_ALT */ |