/**
 * \file md5_alt.h
 *
 * \brief MD5 hw acceleration (hash function)
 *
 * Copyright (c) 2017, STMicroelectronics
 *  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.
 *
 */
#ifndef MBEDTLS_MD5_ALT_H
#define MBEDTLS_MD5_ALT_H

#if defined(MBEDTLS_MD5_ALT)
#include "mbedtls/platform.h"
#include "mbedtls/config.h"

#include "cmsis.h"
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * \brief          MD5 context structure
 */
typedef struct
{
    HASH_HandleTypeDef hhash_md5;
}
mbedtls_md5_context;

/**
 * \brief          Initialize MD5 context
 *
 * \param ctx      MD5 context to be initialized
 */
void mbedtls_md5_init( mbedtls_md5_context *ctx );

/**
 * \brief          Clear MD5 context
 *
 * \param ctx      MD5 context to be cleared
 */
void mbedtls_md5_free( mbedtls_md5_context *ctx );

/**
 * \brief          Clone (the state of) an MD5 context
 *
 * \param dst      The destination context
 * \param src      The context to be cloned
 */
void mbedtls_md5_clone( mbedtls_md5_context *dst,
                        const mbedtls_md5_context *src );

/**
 * \brief          MD5 context setup
 *
 * \param ctx      context to be initialized
 */
void mbedtls_md5_starts( mbedtls_md5_context *ctx );

/**
 * \brief          MD5 process buffer
 *
 * \param ctx      MD5 context
 * \param input    buffer holding the  data
 * \param ilen     length of the input data
 */
void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen );

/**
 * \brief          MD5 final digest
 *
 * \param ctx      MD5 context
 * \param output   MD5 checksum result
 */
void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] );

/* Internal use */
void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] );

#ifdef __cplusplus
}
#endif

#endif /* MBEDTLS_MD5_ALT */

#endif /* md5_alt.h */