1 /** 2 * \file md2.h 3 * 4 * \brief MD2 message digest algorithm (hash function) 5 * 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved 7 * SPDX-License-Identifier: Apache-2.0 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may 10 * not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 * This file is part of mbed TLS (https://tls.mbed.org) 22 */ 23 #ifndef MBEDTLS_MD2_H 24 #define MBEDTLS_MD2_H 25 26 #if !defined(MBEDTLS_CONFIG_FILE) 27 #include "config.h" 28 #else 29 #include MBEDTLS_CONFIG_FILE 30 #endif 31 32 #include <stddef.h> 33 34 #if !defined(MBEDTLS_MD2_ALT) 35 // Regular implementation 36 // 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /** 43 * \brief MD2 context structure 44 */ 45 typedef struct 46 { 47 unsigned char cksum[16]; /*!< checksum of the data block */ 48 unsigned char state[48]; /*!< intermediate digest state */ 49 unsigned char buffer[16]; /*!< data block being processed */ 50 size_t left; /*!< amount of data in buffer */ 51 } 52 mbedtls_md2_context; 53 54 /** 55 * \brief Initialize MD2 context 56 * 57 * \param ctx MD2 context to be initialized 58 */ 59 void mbedtls_md2_init( mbedtls_md2_context *ctx ); 60 61 /** 62 * \brief Clear MD2 context 63 * 64 * \param ctx MD2 context to be cleared 65 */ 66 void mbedtls_md2_free( mbedtls_md2_context *ctx ); 67 68 /** 69 * \brief Clone (the state of) an MD2 context 70 * 71 * \param dst The destination context 72 * \param src The context to be cloned 73 */ 74 void mbedtls_md2_clone( mbedtls_md2_context *dst, 75 const mbedtls_md2_context *src ); 76 77 /** 78 * \brief MD2 context setup 79 * 80 * \param ctx context to be initialized 81 */ 82 void mbedtls_md2_starts( mbedtls_md2_context *ctx ); 83 84 /** 85 * \brief MD2 process buffer 86 * 87 * \param ctx MD2 context 88 * \param input buffer holding the data 89 * \param ilen length of the input data 90 */ 91 void mbedtls_md2_update( mbedtls_md2_context *ctx, const unsigned char *input, size_t ilen ); 92 93 /** 94 * \brief MD2 final digest 95 * 96 * \param ctx MD2 context 97 * \param output MD2 checksum result 98 */ 99 void mbedtls_md2_finish( mbedtls_md2_context *ctx, unsigned char output[16] ); 100 101 #ifdef __cplusplus 102 } 103 #endif 104 105 #else /* MBEDTLS_MD2_ALT */ 106 #include "md2_alt.h" 107 #endif /* MBEDTLS_MD2_ALT */ 108 109 #ifdef __cplusplus 110 extern "C" { 111 #endif 112 113 /** 114 * \brief Output = MD2( input buffer ) 115 * 116 * \param input buffer holding the data 117 * \param ilen length of the input data 118 * \param output MD2 checksum result 119 */ 120 void mbedtls_md2( const unsigned char *input, size_t ilen, unsigned char output[16] ); 121 122 /** 123 * \brief Checkup routine 124 * 125 * \return 0 if successful, or 1 if the test failed 126 */ 127 int mbedtls_md2_self_test( int verbose ); 128 129 /* Internal use */ 130 void mbedtls_md2_process( mbedtls_md2_context *ctx ); 131 132 #ifdef __cplusplus 133 } 134 #endif 135 136 #endif /* mbedtls_md2.h */ 137
