Mbed OS Reference | md5_alt.h Source File

 /**
  * \file md5.h
  *
  * \brief MD5 message digest algorithm (hash function)
  *
  * \warning   MD5 is considered a weak message digest and its use constitutes a
  *            security risk. We recommend considering stronger message
  *            digests instead.
  */
 /*
  *  Copyright (C) 2006-2015, ARM Limited, 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 MD5 API with HW services based
  *  on mbed TLS API
  */
 
 #ifndef MBEDTLS_MD5_ALT_H
 #define MBEDTLS_MD5_ALT_H
 
 #if defined (MBEDTLS_MD5_ALT)
 /* Includes ------------------------------------------------------------------*/
 #include "hash_stm32.h"
 
 #ifndef MBEDTLS_ERR_MD5_BAD_INPUT_DATA
 #define MBEDTLS_ERR_MD5_BAD_INPUT_DATA                     -0x00AF
 #endif
 
 #define ST_MD5_BLOCK_SIZE  ((size_t)  64)           /*!< HW handles 512 bits, ie 64 bytes */
 #define ST_MD5_NB_HASH_REG ((uint32_t)57)           /*!< Number of HASH HW context Registers:
                                                          CR + STR + IMR + CSR[54] */
 
 /**
  * \brief          MD5 context structure
  *
  * STMicroelectronics edition
  */
 typedef struct mbedtls_md5_context {
     HASH_HandleTypeDef hhash;                       /*!< Handle of HASH HAL */
     uint8_t sbuf[ST_MD5_BLOCK_SIZE];                /*!< Buffer to store input data until ST_MD5_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_MD5_NB_HASH_REG];
 }
 mbedtls_md5_context;
 
 
 #endif /* MBEDTLS_MD5_ALT */
 
 #endif /* MBEDTLS_MD5_ALT_H */
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