sha256.h

Go to the documentation of this file.

 
/*
 *  Copyright The Mbed TLS Contributors
 *  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_SHA256_H
#define MBEDTLS_SHA256_H
 
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
 
#include <stddef.h>
#include <stdint.h>
 
/* MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED                -0x0037  
#define MBEDTLS_ERR_SHA256_BAD_INPUT_DATA                 -0x0074  
#ifdef __cplusplus
extern "C" {
#endif
 
#if !defined(MBEDTLS_SHA256_ALT)
// Regular implementation
//
 
typedef struct mbedtls_sha256_context
{
    uint32_t total[2];          
    uint32_t state[8];          
    unsigned char buffer[64];   
    int is224;                  
}
mbedtls_sha256_context;
 
#else  /* MBEDTLS_SHA256_ALT */
#include "sha256_alt.h"
#endif /* MBEDTLS_SHA256_ALT */
 
void mbedtls_sha256_init( mbedtls_sha256_context *ctx );
 
void mbedtls_sha256_free( mbedtls_sha256_context *ctx );
 
void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
                           const mbedtls_sha256_context *src );
 
int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 );
 
int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx,
                               const unsigned char *input,
                               size_t ilen );
 
int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx,
                               unsigned char output[32] );
 
int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
                                     const unsigned char data[64] );
 
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED      __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx,
                                               int is224 );
 
MBEDTLS_DEPRECATED void mbedtls_sha256_update( mbedtls_sha256_context *ctx,
                                               const unsigned char *input,
                                               size_t ilen );
 
MBEDTLS_DEPRECATED void mbedtls_sha256_finish( mbedtls_sha256_context *ctx,
                                               unsigned char output[32] );
 
MBEDTLS_DEPRECATED void mbedtls_sha256_process( mbedtls_sha256_context *ctx,
                                                const unsigned char data[64] );
 
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
 
int mbedtls_sha256_ret( const unsigned char *input,
                        size_t ilen,
                        unsigned char output[32],
                        int is224 );
 
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED      __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
 
MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input,
                                        size_t ilen,
                                        unsigned char output[32],
                                        int is224 );
 
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
 
#if defined(MBEDTLS_SELF_TEST)
 
int mbedtls_sha256_self_test( int verbose );
 
#endif /* MBEDTLS_SELF_TEST */
 
#ifdef __cplusplus
}
#endif
 
#endif /* mbedtls_sha256.h */