[398] | 1 | /**
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| 2 | * \file md2.h
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| 3 | *
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| 4 | * \brief MD2 message digest algorithm (hash function)
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| 5 | *
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| 6 | * \warning MD2 is considered a weak message digest and its use constitutes a
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| 7 | * security risk. We recommend considering stronger message digests
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| 8 | * instead.
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| 9 | */
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| 10 | /*
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| 11 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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| 12 | * SPDX-License-Identifier: Apache-2.0
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| 13 | *
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| 14 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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| 15 | * not use this file except in compliance with the License.
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| 16 | * You may obtain a copy of the License at
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| 17 | *
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| 18 | * http://www.apache.org/licenses/LICENSE-2.0
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| 19 | *
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| 20 | * Unless required by applicable law or agreed to in writing, software
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| 21 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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| 22 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 23 | * See the License for the specific language governing permissions and
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| 24 | * limitations under the License.
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| 25 | *
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| 26 | * This file is part of mbed TLS (https://tls.mbed.org)
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| 27 | *
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| 28 | */
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| 29 | #ifndef MBEDTLS_MD2_H
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| 30 | #define MBEDTLS_MD2_H
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| 31 |
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| 32 | #if !defined(MBEDTLS_CONFIG_FILE)
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| 33 | #include "config.h"
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| 34 | #else
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| 35 | #include MBEDTLS_CONFIG_FILE
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| 36 | #endif
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| 37 |
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| 38 | #include <stddef.h>
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| 39 |
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| 40 | /* MBEDTLS_ERR_MD2_HW_ACCEL_FAILED is deprecated and should not be used. */
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| 41 | #define MBEDTLS_ERR_MD2_HW_ACCEL_FAILED -0x002B /**< MD2 hardware accelerator failed */
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| 42 |
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| 43 | #ifdef __cplusplus
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| 44 | extern "C" {
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| 45 | #endif
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| 46 |
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| 47 | #if !defined(MBEDTLS_MD2_ALT)
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| 48 | // Regular implementation
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| 49 | //
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| 50 |
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| 51 | /**
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| 52 | * \brief MD2 context structure
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| 53 | *
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| 54 | * \warning MD2 is considered a weak message digest and its use
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| 55 | * constitutes a security risk. We recommend considering
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| 56 | * stronger message digests instead.
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| 57 | *
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| 58 | */
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| 59 | typedef struct mbedtls_md2_context
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| 60 | {
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| 61 | unsigned char cksum[16]; /*!< checksum of the data block */
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| 62 | unsigned char state[48]; /*!< intermediate digest state */
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| 63 | unsigned char buffer[16]; /*!< data block being processed */
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| 64 | size_t left; /*!< amount of data in buffer */
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| 65 | }
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| 66 | mbedtls_md2_context;
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| 67 |
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| 68 | #else /* MBEDTLS_MD2_ALT */
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| 69 | #include "md2_alt.h"
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| 70 | #endif /* MBEDTLS_MD2_ALT */
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| 71 |
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| 72 | /**
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| 73 | * \brief Initialize MD2 context
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| 74 | *
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| 75 | * \param ctx MD2 context to be initialized
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| 76 | *
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| 77 | * \warning MD2 is considered a weak message digest and its use
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| 78 | * constitutes a security risk. We recommend considering
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| 79 | * stronger message digests instead.
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| 80 | *
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| 81 | */
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| 82 | void mbedtls_md2_init( mbedtls_md2_context *ctx );
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| 83 |
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| 84 | /**
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| 85 | * \brief Clear MD2 context
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| 86 | *
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| 87 | * \param ctx MD2 context to be cleared
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| 88 | *
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| 89 | * \warning MD2 is considered a weak message digest and its use
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| 90 | * constitutes a security risk. We recommend considering
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| 91 | * stronger message digests instead.
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| 92 | *
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| 93 | */
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| 94 | void mbedtls_md2_free( mbedtls_md2_context *ctx );
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| 95 |
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| 96 | /**
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| 97 | * \brief Clone (the state of) an MD2 context
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| 98 | *
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| 99 | * \param dst The destination context
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| 100 | * \param src The context to be cloned
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| 101 | *
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| 102 | * \warning MD2 is considered a weak message digest and its use
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| 103 | * constitutes a security risk. We recommend considering
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| 104 | * stronger message digests instead.
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| 105 | *
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| 106 | */
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| 107 | void mbedtls_md2_clone( mbedtls_md2_context *dst,
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| 108 | const mbedtls_md2_context *src );
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| 109 |
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| 110 | /**
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| 111 | * \brief MD2 context setup
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| 112 | *
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| 113 | * \param ctx context to be initialized
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| 114 | *
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| 115 | * \return 0 if successful
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| 116 | *
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| 117 | * \warning MD2 is considered a weak message digest and its use
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| 118 | * constitutes a security risk. We recommend considering
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| 119 | * stronger message digests instead.
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| 120 | *
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| 121 | */
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| 122 | int mbedtls_md2_starts_ret( mbedtls_md2_context *ctx );
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| 123 |
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| 124 | /**
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| 125 | * \brief MD2 process buffer
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| 126 | *
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| 127 | * \param ctx MD2 context
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| 128 | * \param input buffer holding the data
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| 129 | * \param ilen length of the input data
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| 130 | *
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| 131 | * \return 0 if successful
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| 132 | *
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| 133 | * \warning MD2 is considered a weak message digest and its use
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| 134 | * constitutes a security risk. We recommend considering
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| 135 | * stronger message digests instead.
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| 136 | *
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| 137 | */
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| 138 | int mbedtls_md2_update_ret( mbedtls_md2_context *ctx,
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| 139 | const unsigned char *input,
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| 140 | size_t ilen );
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| 141 |
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| 142 | /**
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| 143 | * \brief MD2 final digest
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| 144 | *
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| 145 | * \param ctx MD2 context
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| 146 | * \param output MD2 checksum result
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| 147 | *
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| 148 | * \return 0 if successful
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| 149 | *
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| 150 | * \warning MD2 is considered a weak message digest and its use
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| 151 | * constitutes a security risk. We recommend considering
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| 152 | * stronger message digests instead.
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| 153 | *
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| 154 | */
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| 155 | int mbedtls_md2_finish_ret( mbedtls_md2_context *ctx,
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| 156 | unsigned char output[16] );
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| 157 |
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| 158 | /**
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| 159 | * \brief MD2 process data block (internal use only)
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| 160 | *
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| 161 | * \param ctx MD2 context
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| 162 | *
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| 163 | * \return 0 if successful
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| 164 | *
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| 165 | * \warning MD2 is considered a weak message digest and its use
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| 166 | * constitutes a security risk. We recommend considering
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| 167 | * stronger message digests instead.
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| 168 | *
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| 169 | */
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| 170 | int mbedtls_internal_md2_process( mbedtls_md2_context *ctx );
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| 171 |
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| 172 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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| 173 | #if defined(MBEDTLS_DEPRECATED_WARNING)
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| 174 | #define MBEDTLS_DEPRECATED __attribute__((deprecated))
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| 175 | #else
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| 176 | #define MBEDTLS_DEPRECATED
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| 177 | #endif
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| 178 | /**
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| 179 | * \brief MD2 context setup
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| 180 | *
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| 181 | * \deprecated Superseded by mbedtls_md2_starts_ret() in 2.7.0
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| 182 | *
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| 183 | * \param ctx context to be initialized
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| 184 | *
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| 185 | * \warning MD2 is considered a weak message digest and its use
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| 186 | * constitutes a security risk. We recommend considering
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| 187 | * stronger message digests instead.
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| 188 | *
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| 189 | */
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| 190 | MBEDTLS_DEPRECATED void mbedtls_md2_starts( mbedtls_md2_context *ctx );
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| 191 |
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| 192 | /**
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| 193 | * \brief MD2 process buffer
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| 194 | *
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| 195 | * \deprecated Superseded by mbedtls_md2_update_ret() in 2.7.0
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| 196 | *
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| 197 | * \param ctx MD2 context
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| 198 | * \param input buffer holding the data
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| 199 | * \param ilen length of the input data
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| 200 | *
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| 201 | * \warning MD2 is considered a weak message digest and its use
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| 202 | * constitutes a security risk. We recommend considering
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| 203 | * stronger message digests instead.
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| 204 | *
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| 205 | */
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| 206 | MBEDTLS_DEPRECATED void mbedtls_md2_update( mbedtls_md2_context *ctx,
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| 207 | const unsigned char *input,
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| 208 | size_t ilen );
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| 209 |
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| 210 | /**
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| 211 | * \brief MD2 final digest
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| 212 | *
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| 213 | * \deprecated Superseded by mbedtls_md2_finish_ret() in 2.7.0
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| 214 | *
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| 215 | * \param ctx MD2 context
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| 216 | * \param output MD2 checksum result
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| 217 | *
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| 218 | * \warning MD2 is considered a weak message digest and its use
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| 219 | * constitutes a security risk. We recommend considering
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| 220 | * stronger message digests instead.
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| 221 | *
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| 222 | */
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| 223 | MBEDTLS_DEPRECATED void mbedtls_md2_finish( mbedtls_md2_context *ctx,
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| 224 | unsigned char output[16] );
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| 225 |
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| 226 | /**
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| 227 | * \brief MD2 process data block (internal use only)
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| 228 | *
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| 229 | * \deprecated Superseded by mbedtls_internal_md2_process() in 2.7.0
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| 230 | *
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| 231 | * \param ctx MD2 context
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| 232 | *
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| 233 | * \warning MD2 is considered a weak message digest and its use
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| 234 | * constitutes a security risk. We recommend considering
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| 235 | * stronger message digests instead.
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| 236 | *
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| 237 | */
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| 238 | MBEDTLS_DEPRECATED void mbedtls_md2_process( mbedtls_md2_context *ctx );
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| 239 |
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| 240 | #undef MBEDTLS_DEPRECATED
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| 241 | #endif /* !MBEDTLS_DEPRECATED_REMOVED */
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| 242 |
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| 243 | /**
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| 244 | * \brief Output = MD2( input buffer )
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| 245 | *
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| 246 | * \param input buffer holding the data
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| 247 | * \param ilen length of the input data
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| 248 | * \param output MD2 checksum result
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| 249 | *
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| 250 | * \warning MD2 is considered a weak message digest and its use
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| 251 | * constitutes a security risk. We recommend considering
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| 252 | * stronger message digests instead.
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| 253 | *
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| 254 | */
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| 255 | int mbedtls_md2_ret( const unsigned char *input,
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| 256 | size_t ilen,
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| 257 | unsigned char output[16] );
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| 258 |
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| 259 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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| 260 | #if defined(MBEDTLS_DEPRECATED_WARNING)
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| 261 | #define MBEDTLS_DEPRECATED __attribute__((deprecated))
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| 262 | #else
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| 263 | #define MBEDTLS_DEPRECATED
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| 264 | #endif
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| 265 | /**
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| 266 | * \brief Output = MD2( input buffer )
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| 267 | *
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| 268 | * \deprecated Superseded by mbedtls_md2_ret() in 2.7.0
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| 269 | *
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| 270 | * \param input buffer holding the data
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| 271 | * \param ilen length of the input data
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| 272 | * \param output MD2 checksum result
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| 273 | *
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| 274 | * \warning MD2 is considered a weak message digest and its use
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| 275 | * constitutes a security risk. We recommend considering
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| 276 | * stronger message digests instead.
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| 277 | *
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| 278 | */
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| 279 | MBEDTLS_DEPRECATED void mbedtls_md2( const unsigned char *input,
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| 280 | size_t ilen,
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| 281 | unsigned char output[16] );
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| 282 |
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| 283 | #undef MBEDTLS_DEPRECATED
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| 284 | #endif /* !MBEDTLS_DEPRECATED_REMOVED */
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| 285 |
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| 286 | #if defined(MBEDTLS_SELF_TEST)
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| 287 |
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| 288 | /**
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| 289 | * \brief Checkup routine
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| 290 | *
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| 291 | * \return 0 if successful, or 1 if the test failed
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| 292 | *
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| 293 | * \warning MD2 is considered a weak message digest and its use
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| 294 | * constitutes a security risk. We recommend considering
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| 295 | * stronger message digests instead.
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| 296 | *
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| 297 | */
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| 298 | int mbedtls_md2_self_test( int verbose );
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| 299 |
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| 300 | #endif /* MBEDTLS_SELF_TEST */
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| 301 |
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| 302 | #ifdef __cplusplus
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| 303 | }
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| 304 | #endif
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| 305 |
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| 306 | #endif /* mbedtls_md2.h */
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