mirror of https://github.com/ARMmbed/mbed-os.git
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/**
|
|
* \file sha256.h
|
|
*
|
|
* \brief This file contains SHA-224 and SHA-256 definitions and functions.
|
|
*
|
|
* The Secure Hash Algorithms 224 and 256 (SHA-224 and SHA-256) cryptographic
|
|
* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
|
|
*/
|
|
/*
|
|
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
|
|
* Copyright (C) 2019-2020, STMicroelectronics, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file implements STMicroelectronics SHA256 API with HW services based
|
|
* on mbed TLS API
|
|
*/
|
|
|
|
#ifndef MBEDTLS_SHA256_ALT_H
|
|
#define MBEDTLS_SHA256_ALT_H
|
|
|
|
#if defined (MBEDTLS_SHA256_ALT)
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "hash_stm32.h"
|
|
|
|
#define ST_SHA256_BLOCK_SIZE ((size_t) 64) /*!< HW handles 512 bits, ie 64 bytes */
|
|
#define ST_SHA256_NB_HASH_REG ((uint32_t)57) /*!< Number of HASH HW context Registers:
|
|
CR + STR + IMR + CSR[54] */
|
|
|
|
/**
|
|
* \brief SHA-256 context structure
|
|
*
|
|
* The structure is used both for SHA-256 and for SHA-224
|
|
* checksum calculations. The choice between these two is
|
|
* made in the call to mbedtls_sha256_starts_ret().
|
|
*/
|
|
typedef struct mbedtls_sha256_context {
|
|
int is224; /*!< 0 = use SHA256, 1 = use SHA224 */
|
|
HASH_HandleTypeDef hhash; /*!< Handle of HASH HAL */
|
|
uint8_t sbuf[ST_SHA256_BLOCK_SIZE]; /*!< Buffer to store input data until ST_SHA256_BLOCK_SIZE
|
|
is reached, or until last input data is reached */
|
|
uint8_t sbuf_len; /*!< Number of bytes stored in sbuf */
|
|
uint32_t ctx_save_regs[ST_SHA256_NB_HASH_REG];
|
|
}
|
|
mbedtls_sha256_context;
|
|
|
|
|
|
#endif /* MBEDTLS_SHA256_ALT */
|
|
#endif /* MBEDTLS_SHA256_ALT_H */
|