/**
 * \file sha1.h
 *
 * \brief SHA-1 cryptographic hash function
 *
 *  Copyright (C) 2006-2015, ARM Limited, 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 is part of mbed TLS (https://tls.mbed.org)
 */
#ifndef MBEDTLS_SHA1_ALT_H
#define MBEDTLS_SHA1_ALT_H

#ifdef __cplusplus
extern "C" {
#endif

#include "sec_crypto_sha.h"
/**
 * \brief          SHA-1 context structure
 */

typedef struct {
    sc_sha_t sc_sha;
    sc_sha_context_t sc_ctx;
}
mbedtls_sha1_context;

/**
 * \brief          Initialize SHA-1 context
 *
 * \param ctx      SHA-1 context to be initialized
 */
void mbedtls_sha1_init(mbedtls_sha1_context *ctx);

/**
 * \brief          Clear SHA-1 context
 *
 * \param ctx      SHA-1 context to be cleared
 */
void mbedtls_sha1_free(mbedtls_sha1_context *ctx);

/**
 * \brief          Clone (the state of) a SHA-1 context
 *
 * \param dst      The destination context
 * \param src      The context to be cloned
 */
void mbedtls_sha1_clone(mbedtls_sha1_context *dst, const mbedtls_sha1_context *src);

/**
 * \brief          SHA-1 context setup
 *
 * \param ctx      context to be initialized
 */
void mbedtls_sha1_starts(mbedtls_sha1_context *ctx);

/**
 * \brief          SHA-1 process buffer
 *
 * \param ctx      SHA-1 context
 * \param input    buffer holding the  data
 * \param ilen     length of the input data
 */
void mbedtls_sha1_update(mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen);

/**
 * \brief          SHA-1 final digest
 *
 * \param ctx      SHA-1 context
 * \param output   SHA-1 checksum result
 */
void mbedtls_sha1_finish(mbedtls_sha1_context *ctx, unsigned char output[20]);

/* Internal use */
void mbedtls_sha1_process(mbedtls_sha1_context *ctx, const unsigned char data[64]);

#ifdef __cplusplus
}
#endif

#endif /* mbedtls_sha1.h */