mirror of https://github.com/ARMmbed/mbed-os.git
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
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* sha1_alt.h SHA-1 hash
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*******************************************************************************
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* Copyright (C) 2017, STMicroelectronics
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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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*/
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#ifndef MBEDTLS_SHA1_ALT_H
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#define MBEDTLS_SHA1_ALT_H
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#if defined MBEDTLS_SHA1_ALT
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#include "cmsis.h"
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief SHA-1 context structure
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* \note HAL_HASH_SHA1_Accumulate cannot handle less than 4 bytes, unless it is the last call to the function
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* In case of buffer size < 4, flag is set to 1, remaining bytes are copied in a temp buffer.
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* The pointer and the length are saved in sbuf and sbuf_len.
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* At the next accumulation, the saved values are taken into account, and flag is set to 0
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* If SHA1_finish is called and flag=1, the remaining bytes are accumulated before the call to HAL_HASH_SHA1_Finish
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*/
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typedef struct
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{
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unsigned char *sbuf; /*!< pointer to the remaining buffer to be processed */
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unsigned char sbuf_len; /*!< number of bytes remaining in sbuf to be processed */
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HASH_HandleTypeDef hhash_sha1; /*!< ST HAL HASH struct */
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int flag; /*!< 1 : there are sbuf_len bytes to be processed in sbuf, 0 : every data have been processed. */
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}
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mbedtls_sha1_context;
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/**
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* \brief Initialize SHA-1 context
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*
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* \param ctx SHA-1 context to be initialized
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*/
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void mbedtls_sha1_init( mbedtls_sha1_context *ctx );
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/**
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* \brief Clear SHA-1 context
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*
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* \param ctx SHA-1 context to be cleared
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*/
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void mbedtls_sha1_free( mbedtls_sha1_context *ctx );
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/**
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* \brief Clone (the state of) a SHA-1 context
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*
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* \param dst The destination context
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* \param src The context to be cloned
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*/
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void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
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const mbedtls_sha1_context *src );
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/**
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* \brief SHA-1 context setup
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*
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* \param ctx context to be initialized
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*/
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void mbedtls_sha1_starts( mbedtls_sha1_context *ctx );
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/**
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* \brief SHA-1 process buffer
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*
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* \param ctx SHA-1 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*/
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void mbedtls_sha1_update( mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-1 final digest
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*
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* \param ctx SHA-1 context
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* \param output SHA-1 checksum result
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*/
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void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, unsigned char output[20] );
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/* Internal use */
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void mbedtls_sha1_process( mbedtls_sha1_context *ctx, const unsigned char data[64] );
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* MBEDTLS_SHA1_ALT */
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#endif /* sha1_alt.h */
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