md_internal.h

00001 /**
00002  * \file md_internal.h
00003  *
00004  * \brief Message digest wrappers.
00005  *
00006  * \warning This in an internal header. Do not include directly.
00007  *
00008  * \author Adriaan de Jong <dejong@fox-it.com>
00009  *
00010  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
00011  *  SPDX-License-Identifier: Apache-2.0
00012  *
00013  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
00014  *  not use this file except in compliance with the License.
00015  *  You may obtain a copy of the License at
00016  *
00017  *  http://www.apache.org/licenses/LICENSE-2.0
00018  *
00019  *  Unless required by applicable law or agreed to in writing, software
00020  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00021  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00022  *  See the License for the specific language governing permissions and
00023  *  limitations under the License.
00024  *
00025  *  This file is part of mbed TLS (https://tls.mbed.org)
00026  */
00027 #ifndef MBEDTLS_MD_WRAP_H
00028 #define MBEDTLS_MD_WRAP_H
00029 
00030 #if !defined(MBEDTLS_CONFIG_FILE)
00031 #include "config.h"
00032 #else
00033 #include MBEDTLS_CONFIG_FILE
00034 #endif
00035 
00036 #include "md.h"
00037 
00038 #ifdef __cplusplus
00039 extern "C" {
00040 #endif
00041 
00042 /**
00043  * Message digest information.
00044  * Allows message digest functions to be called in a generic way.
00045  */
00046 struct mbedtls_md_info_t
00047 {
00048     /** Digest identifier */
00049     mbedtls_md_type_t type;
00050 
00051     /** Name of the message digest */
00052     const char * name;
00053 
00054     /** Output length of the digest function in bytes */
00055     int size;
00056 
00057     /** Block length of the digest function in bytes */
00058     int block_size;
00059 
00060     /** Digest initialisation function */
00061     void (*starts_func)( void *ctx );
00062 
00063     /** Digest update function */
00064     void (*update_func)( void *ctx, const unsigned char *input, size_t ilen );
00065 
00066     /** Digest finalisation function */
00067     void (*finish_func)( void *ctx, unsigned char *output );
00068 
00069     /** Generic digest function */
00070     void (*digest_func)( const unsigned char *input, size_t ilen,
00071                          unsigned char *output );
00072 
00073     /** Allocate a new context */
00074     void * (*ctx_alloc_func)( void );
00075 
00076     /** Free the given context */
00077     void (*ctx_free_func)( void *ctx );
00078 
00079     /** Clone state from a context */
00080     void (*clone_func)( void *dst, const void *src );
00081 
00082     /** Internal use only */
00083     void (*process_func)( void *ctx, const unsigned char *input );
00084 };
00085 
00086 #if defined(MBEDTLS_MD2_C)
00087 extern const mbedtls_md_info_t mbedtls_md2_info;
00088 #endif
00089 #if defined(MBEDTLS_MD4_C)
00090 extern const mbedtls_md_info_t mbedtls_md4_info;
00091 #endif
00092 #if defined(MBEDTLS_MD5_C)
00093 extern const mbedtls_md_info_t mbedtls_md5_info;
00094 #endif
00095 #if defined(MBEDTLS_RIPEMD160_C)
00096 extern const mbedtls_md_info_t mbedtls_ripemd160_info;
00097 #endif
00098 #if defined(MBEDTLS_SHA1_C)
00099 extern const mbedtls_md_info_t mbedtls_sha1_info;
00100 #endif
00101 #if defined(MBEDTLS_SHA256_C)
00102 extern const mbedtls_md_info_t mbedtls_sha224_info;
00103 extern const mbedtls_md_info_t mbedtls_sha256_info;
00104 #endif
00105 #if defined(MBEDTLS_SHA512_C)
00106 extern const mbedtls_md_info_t mbedtls_sha384_info;
00107 extern const mbedtls_md_info_t mbedtls_sha512_info;
00108 #endif
00109 
00110 #ifdef __cplusplus
00111 }
00112 #endif
00113 
00114 #endif /* MBEDTLS_MD_WRAP_H */