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  1. /**
  2.  * \file md_internal.h
  3.  *
  4.  * \brief Message digest wrappers.
  5.  *
  6.  * \warning This in an internal header. Do not include directly.
  7.  *
  8.  * \author Adriaan de Jong <dejong@fox-it.com>
  9.  */
  10. /*
  11.  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  12.  *  SPDX-License-Identifier: GPL-2.0
  13.  *
  14.  *  This program is free software; you can redistribute it and/or modify
  15.  *  it under the terms of the GNU General Public License as published by
  16.  *  the Free Software Foundation; either version 2 of the License, or
  17.  *  (at your option) any later version.
  18.  *
  19.  *  This program is distributed in the hope that it will be useful,
  20.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  21.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22.  *  GNU General Public License for more details.
  23.  *
  24.  *  You should have received a copy of the GNU General Public License along
  25.  *  with this program; if not, write to the Free Software Foundation, Inc.,
  26.  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  27.  *
  28.  *  This file is part of mbed TLS (https://tls.mbed.org)
  29.  */
  30. #ifndef MBEDTLS_MD_WRAP_H
  31. #define MBEDTLS_MD_WRAP_H
  32.  
  33. #if !defined(MBEDTLS_CONFIG_FILE)
  34. #include "config.h"
  35. #else
  36. #include MBEDTLS_CONFIG_FILE
  37. #endif
  38.  
  39. #include "md.h"
  40.  
  41. #ifdef __cplusplus
  42. extern "C" {
  43. #endif
  44.  
  45. /**
  46.  * Message digest information.
  47.  * Allows message digest functions to be called in a generic way.
  48.  */
  49. struct mbedtls_md_info_t
  50. {
  51.     /** Digest identifier */
  52.     mbedtls_md_type_t type;
  53.  
  54.     /** Name of the message digest */
  55.     const char * name;
  56.  
  57.     /** Output length of the digest function in bytes */
  58.     int size;
  59.  
  60.     /** Block length of the digest function in bytes */
  61.     int block_size;
  62.  
  63.     /** Digest initialisation function */
  64.     int (*starts_func)( void *ctx );
  65.  
  66.     /** Digest update function */
  67.     int (*update_func)( void *ctx, const unsigned char *input, size_t ilen );
  68.  
  69.     /** Digest finalisation function */
  70.     int (*finish_func)( void *ctx, unsigned char *output );
  71.  
  72.     /** Generic digest function */
  73.     int (*digest_func)( const unsigned char *input, size_t ilen,
  74.                         unsigned char *output );
  75.  
  76.     /** Allocate a new context */
  77.     void * (*ctx_alloc_func)( void );
  78.  
  79.     /** Free the given context */
  80.     void (*ctx_free_func)( void *ctx );
  81.  
  82.     /** Clone state from a context */
  83.     void (*clone_func)( void *dst, const void *src );
  84.  
  85.     /** Internal use only */
  86.     int (*process_func)( void *ctx, const unsigned char *input );
  87. };
  88.  
  89. #if defined(MBEDTLS_MD2_C)
  90. extern const mbedtls_md_info_t mbedtls_md2_info;
  91. #endif
  92. #if defined(MBEDTLS_MD4_C)
  93. extern const mbedtls_md_info_t mbedtls_md4_info;
  94. #endif
  95. #if defined(MBEDTLS_MD5_C)
  96. extern const mbedtls_md_info_t mbedtls_md5_info;
  97. #endif
  98. #if defined(MBEDTLS_RIPEMD160_C)
  99. extern const mbedtls_md_info_t mbedtls_ripemd160_info;
  100. #endif
  101. #if defined(MBEDTLS_SHA1_C)
  102. extern const mbedtls_md_info_t mbedtls_sha1_info;
  103. #endif
  104. #if defined(MBEDTLS_SHA256_C)
  105. extern const mbedtls_md_info_t mbedtls_sha224_info;
  106. extern const mbedtls_md_info_t mbedtls_sha256_info;
  107. #endif
  108. #if defined(MBEDTLS_SHA512_C)
  109. extern const mbedtls_md_info_t mbedtls_sha384_info;
  110. extern const mbedtls_md_info_t mbedtls_sha512_info;
  111. #endif
  112.  
  113. #ifdef __cplusplus
  114. }
  115. #endif
  116.  
  117. #endif /* MBEDTLS_MD_WRAP_H */
  118.