Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/mbedtls/md.h@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

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mbedAustin 11:cada08fc8a70 1 /**
mbedAustin 11:cada08fc8a70 2 * \file mbedtls_md.h
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * \brief Generic message digest wrapper
mbedAustin 11:cada08fc8a70 5 *
mbedAustin 11:cada08fc8a70 6 * \author Adriaan de Jong <dejong@fox-it.com>
mbedAustin 11:cada08fc8a70 7 *
mbedAustin 11:cada08fc8a70 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 9 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 10 *
mbedAustin 11:cada08fc8a70 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 12 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 13 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 14 *
mbedAustin 11:cada08fc8a70 15 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 16 *
mbedAustin 11:cada08fc8a70 17 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 20 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 21 * limitations under the License.
mbedAustin 11:cada08fc8a70 22 *
mbedAustin 11:cada08fc8a70 23 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 24 */
mbedAustin 11:cada08fc8a70 25 #ifndef MBEDTLS_MD_H
mbedAustin 11:cada08fc8a70 26 #define MBEDTLS_MD_H
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 #include <stddef.h>
mbedAustin 11:cada08fc8a70 29
mbedAustin 11:cada08fc8a70 30 #define MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE -0x5080 /**< The selected feature is not available. */
mbedAustin 11:cada08fc8a70 31 #define MBEDTLS_ERR_MD_BAD_INPUT_DATA -0x5100 /**< Bad input parameters to function. */
mbedAustin 11:cada08fc8a70 32 #define MBEDTLS_ERR_MD_ALLOC_FAILED -0x5180 /**< Failed to allocate memory. */
mbedAustin 11:cada08fc8a70 33 #define MBEDTLS_ERR_MD_FILE_IO_ERROR -0x5200 /**< Opening or reading of file failed. */
mbedAustin 11:cada08fc8a70 34
mbedAustin 11:cada08fc8a70 35 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 36 extern "C" {
mbedAustin 11:cada08fc8a70 37 #endif
mbedAustin 11:cada08fc8a70 38
mbedAustin 11:cada08fc8a70 39 typedef enum {
mbedAustin 11:cada08fc8a70 40 MBEDTLS_MD_NONE=0,
mbedAustin 11:cada08fc8a70 41 MBEDTLS_MD_MD2,
mbedAustin 11:cada08fc8a70 42 MBEDTLS_MD_MD4,
mbedAustin 11:cada08fc8a70 43 MBEDTLS_MD_MD5,
mbedAustin 11:cada08fc8a70 44 MBEDTLS_MD_SHA1,
mbedAustin 11:cada08fc8a70 45 MBEDTLS_MD_SHA224,
mbedAustin 11:cada08fc8a70 46 MBEDTLS_MD_SHA256,
mbedAustin 11:cada08fc8a70 47 MBEDTLS_MD_SHA384,
mbedAustin 11:cada08fc8a70 48 MBEDTLS_MD_SHA512,
mbedAustin 11:cada08fc8a70 49 MBEDTLS_MD_RIPEMD160,
mbedAustin 11:cada08fc8a70 50 } mbedtls_md_type_t;
mbedAustin 11:cada08fc8a70 51
mbedAustin 11:cada08fc8a70 52 #if defined(MBEDTLS_SHA512_C)
mbedAustin 11:cada08fc8a70 53 #define MBEDTLS_MD_MAX_SIZE 64 /* longest known is SHA512 */
mbedAustin 11:cada08fc8a70 54 #else
mbedAustin 11:cada08fc8a70 55 #define MBEDTLS_MD_MAX_SIZE 32 /* longest known is SHA256 or less */
mbedAustin 11:cada08fc8a70 56 #endif
mbedAustin 11:cada08fc8a70 57
mbedAustin 11:cada08fc8a70 58 /**
mbedAustin 11:cada08fc8a70 59 * Opaque struct defined in md_internal.h
mbedAustin 11:cada08fc8a70 60 */
mbedAustin 11:cada08fc8a70 61 typedef struct mbedtls_md_info_t mbedtls_md_info_t;
mbedAustin 11:cada08fc8a70 62
mbedAustin 11:cada08fc8a70 63 /**
mbedAustin 11:cada08fc8a70 64 * Generic message digest context.
mbedAustin 11:cada08fc8a70 65 */
mbedAustin 11:cada08fc8a70 66 typedef struct {
mbedAustin 11:cada08fc8a70 67 /** Information about the associated message digest */
mbedAustin 11:cada08fc8a70 68 const mbedtls_md_info_t *md_info;
mbedAustin 11:cada08fc8a70 69
mbedAustin 11:cada08fc8a70 70 /** Digest-specific context */
mbedAustin 11:cada08fc8a70 71 void *md_ctx;
mbedAustin 11:cada08fc8a70 72
mbedAustin 11:cada08fc8a70 73 /** HMAC part of the context */
mbedAustin 11:cada08fc8a70 74 void *hmac_ctx;
mbedAustin 11:cada08fc8a70 75 } mbedtls_md_context_t;
mbedAustin 11:cada08fc8a70 76
mbedAustin 11:cada08fc8a70 77 /**
mbedAustin 11:cada08fc8a70 78 * \brief Returns the list of digests supported by the generic digest module.
mbedAustin 11:cada08fc8a70 79 *
mbedAustin 11:cada08fc8a70 80 * \return a statically allocated array of digests, the last entry
mbedAustin 11:cada08fc8a70 81 * is 0.
mbedAustin 11:cada08fc8a70 82 */
mbedAustin 11:cada08fc8a70 83 const int *mbedtls_md_list( void );
mbedAustin 11:cada08fc8a70 84
mbedAustin 11:cada08fc8a70 85 /**
mbedAustin 11:cada08fc8a70 86 * \brief Returns the message digest information associated with the
mbedAustin 11:cada08fc8a70 87 * given digest name.
mbedAustin 11:cada08fc8a70 88 *
mbedAustin 11:cada08fc8a70 89 * \param md_name Name of the digest to search for.
mbedAustin 11:cada08fc8a70 90 *
mbedAustin 11:cada08fc8a70 91 * \return The message digest information associated with md_name or
mbedAustin 11:cada08fc8a70 92 * NULL if not found.
mbedAustin 11:cada08fc8a70 93 */
mbedAustin 11:cada08fc8a70 94 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name );
mbedAustin 11:cada08fc8a70 95
mbedAustin 11:cada08fc8a70 96 /**
mbedAustin 11:cada08fc8a70 97 * \brief Returns the message digest information associated with the
mbedAustin 11:cada08fc8a70 98 * given digest type.
mbedAustin 11:cada08fc8a70 99 *
mbedAustin 11:cada08fc8a70 100 * \param md_type type of digest to search for.
mbedAustin 11:cada08fc8a70 101 *
mbedAustin 11:cada08fc8a70 102 * \return The message digest information associated with md_type or
mbedAustin 11:cada08fc8a70 103 * NULL if not found.
mbedAustin 11:cada08fc8a70 104 */
mbedAustin 11:cada08fc8a70 105 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type );
mbedAustin 11:cada08fc8a70 106
mbedAustin 11:cada08fc8a70 107 /**
mbedAustin 11:cada08fc8a70 108 * \brief Initialize a md_context (as NONE)
mbedAustin 11:cada08fc8a70 109 * This should always be called first.
mbedAustin 11:cada08fc8a70 110 * Prepares the context for mbedtls_md_setup() or mbedtls_md_free().
mbedAustin 11:cada08fc8a70 111 */
mbedAustin 11:cada08fc8a70 112 void mbedtls_md_init( mbedtls_md_context_t *ctx );
mbedAustin 11:cada08fc8a70 113
mbedAustin 11:cada08fc8a70 114 /**
mbedAustin 11:cada08fc8a70 115 * \brief Free and clear the internal structures of ctx.
mbedAustin 11:cada08fc8a70 116 * Can be called at any time after mbedtls_md_init().
mbedAustin 11:cada08fc8a70 117 * Mandatory once mbedtls_md_setup() has been called.
mbedAustin 11:cada08fc8a70 118 */
mbedAustin 11:cada08fc8a70 119 void mbedtls_md_free( mbedtls_md_context_t *ctx );
mbedAustin 11:cada08fc8a70 120
mbedAustin 11:cada08fc8a70 121 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
mbedAustin 11:cada08fc8a70 122 #if defined(MBEDTLS_DEPRECATED_WARNING)
mbedAustin 11:cada08fc8a70 123 #define MBEDTLS_DEPRECATED __attribute__((deprecated))
mbedAustin 11:cada08fc8a70 124 #else
mbedAustin 11:cada08fc8a70 125 #define MBEDTLS_DEPRECATED
mbedAustin 11:cada08fc8a70 126 #endif
mbedAustin 11:cada08fc8a70 127 /**
mbedAustin 11:cada08fc8a70 128 * \brief Select MD to use and allocate internal structures.
mbedAustin 11:cada08fc8a70 129 * Should be called after mbedtls_md_init() or mbedtls_md_free().
mbedAustin 11:cada08fc8a70 130 * Makes it necessary to call mbedtls_md_free() later.
mbedAustin 11:cada08fc8a70 131 *
mbedAustin 11:cada08fc8a70 132 * \deprecated Superseded by mbedtls_md_setup() in 2.0.0
mbedAustin 11:cada08fc8a70 133 *
mbedAustin 11:cada08fc8a70 134 * \param ctx Context to set up.
mbedAustin 11:cada08fc8a70 135 * \param md_info Message digest to use.
mbedAustin 11:cada08fc8a70 136 *
mbedAustin 11:cada08fc8a70 137 * \returns \c 0 on success,
mbedAustin 11:cada08fc8a70 138 * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure,
mbedAustin 11:cada08fc8a70 139 * \c MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.
mbedAustin 11:cada08fc8a70 140 */
mbedAustin 11:cada08fc8a70 141 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info ) MBEDTLS_DEPRECATED;
mbedAustin 11:cada08fc8a70 142 #undef MBEDTLS_DEPRECATED
mbedAustin 11:cada08fc8a70 143 #endif /* MBEDTLS_DEPRECATED_REMOVED */
mbedAustin 11:cada08fc8a70 144
mbedAustin 11:cada08fc8a70 145 /**
mbedAustin 11:cada08fc8a70 146 * \brief Select MD to use and allocate internal structures.
mbedAustin 11:cada08fc8a70 147 * Should be called after mbedtls_md_init() or mbedtls_md_free().
mbedAustin 11:cada08fc8a70 148 * Makes it necessary to call mbedtls_md_free() later.
mbedAustin 11:cada08fc8a70 149 *
mbedAustin 11:cada08fc8a70 150 * \param ctx Context to set up.
mbedAustin 11:cada08fc8a70 151 * \param md_info Message digest to use.
mbedAustin 11:cada08fc8a70 152 * \param hmac 0 to save some memory if HMAC will not be used,
mbedAustin 11:cada08fc8a70 153 * non-zero is HMAC is going to be used with this context.
mbedAustin 11:cada08fc8a70 154 *
mbedAustin 11:cada08fc8a70 155 * \returns \c 0 on success,
mbedAustin 11:cada08fc8a70 156 * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure,
mbedAustin 11:cada08fc8a70 157 * \c MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.
mbedAustin 11:cada08fc8a70 158 */
mbedAustin 11:cada08fc8a70 159 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac );
mbedAustin 11:cada08fc8a70 160
mbedAustin 11:cada08fc8a70 161 /**
mbedAustin 11:cada08fc8a70 162 * \brief Clone the state of an MD context
mbedAustin 11:cada08fc8a70 163 *
mbedAustin 11:cada08fc8a70 164 * \note The two contexts must have been setup to the same type
mbedAustin 11:cada08fc8a70 165 * (cloning from SHA-256 to SHA-512 make no sense).
mbedAustin 11:cada08fc8a70 166 *
mbedAustin 11:cada08fc8a70 167 * \warning Only clones the MD state, not the HMAC state! (for now)
mbedAustin 11:cada08fc8a70 168 *
mbedAustin 11:cada08fc8a70 169 * \param dst The destination context
mbedAustin 11:cada08fc8a70 170 * \param src The context to be cloned
mbedAustin 11:cada08fc8a70 171 *
mbedAustin 11:cada08fc8a70 172 * \return \c 0 on success,
mbedAustin 11:cada08fc8a70 173 * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure.
mbedAustin 11:cada08fc8a70 174 */
mbedAustin 11:cada08fc8a70 175 int mbedtls_md_clone( mbedtls_md_context_t *dst,
mbedAustin 11:cada08fc8a70 176 const mbedtls_md_context_t *src );
mbedAustin 11:cada08fc8a70 177
mbedAustin 11:cada08fc8a70 178 /**
mbedAustin 11:cada08fc8a70 179 * \brief Returns the size of the message digest output.
mbedAustin 11:cada08fc8a70 180 *
mbedAustin 11:cada08fc8a70 181 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 182 *
mbedAustin 11:cada08fc8a70 183 * \return size of the message digest output in bytes.
mbedAustin 11:cada08fc8a70 184 */
mbedAustin 11:cada08fc8a70 185 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info );
mbedAustin 11:cada08fc8a70 186
mbedAustin 11:cada08fc8a70 187 /**
mbedAustin 11:cada08fc8a70 188 * \brief Returns the type of the message digest output.
mbedAustin 11:cada08fc8a70 189 *
mbedAustin 11:cada08fc8a70 190 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 191 *
mbedAustin 11:cada08fc8a70 192 * \return type of the message digest output.
mbedAustin 11:cada08fc8a70 193 */
mbedAustin 11:cada08fc8a70 194 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info );
mbedAustin 11:cada08fc8a70 195
mbedAustin 11:cada08fc8a70 196 /**
mbedAustin 11:cada08fc8a70 197 * \brief Returns the name of the message digest output.
mbedAustin 11:cada08fc8a70 198 *
mbedAustin 11:cada08fc8a70 199 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 200 *
mbedAustin 11:cada08fc8a70 201 * \return name of the message digest output.
mbedAustin 11:cada08fc8a70 202 */
mbedAustin 11:cada08fc8a70 203 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info );
mbedAustin 11:cada08fc8a70 204
mbedAustin 11:cada08fc8a70 205 /**
mbedAustin 11:cada08fc8a70 206 * \brief Prepare the context to digest a new message.
mbedAustin 11:cada08fc8a70 207 * Generally called after mbedtls_md_setup() or mbedtls_md_finish().
mbedAustin 11:cada08fc8a70 208 * Followed by mbedtls_md_update().
mbedAustin 11:cada08fc8a70 209 *
mbedAustin 11:cada08fc8a70 210 * \param ctx generic message digest context.
mbedAustin 11:cada08fc8a70 211 *
mbedAustin 11:cada08fc8a70 212 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 213 * verification fails.
mbedAustin 11:cada08fc8a70 214 */
mbedAustin 11:cada08fc8a70 215 int mbedtls_md_starts( mbedtls_md_context_t *ctx );
mbedAustin 11:cada08fc8a70 216
mbedAustin 11:cada08fc8a70 217 /**
mbedAustin 11:cada08fc8a70 218 * \brief Generic message digest process buffer
mbedAustin 11:cada08fc8a70 219 * Called between mbedtls_md_starts() and mbedtls_md_finish().
mbedAustin 11:cada08fc8a70 220 * May be called repeatedly.
mbedAustin 11:cada08fc8a70 221 *
mbedAustin 11:cada08fc8a70 222 * \param ctx Generic message digest context
mbedAustin 11:cada08fc8a70 223 * \param input buffer holding the datal
mbedAustin 11:cada08fc8a70 224 * \param ilen length of the input data
mbedAustin 11:cada08fc8a70 225 *
mbedAustin 11:cada08fc8a70 226 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 227 * verification fails.
mbedAustin 11:cada08fc8a70 228 */
mbedAustin 11:cada08fc8a70 229 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen );
mbedAustin 11:cada08fc8a70 230
mbedAustin 11:cada08fc8a70 231 /**
mbedAustin 11:cada08fc8a70 232 * \brief Generic message digest final digest
mbedAustin 11:cada08fc8a70 233 * Called after mbedtls_md_update().
mbedAustin 11:cada08fc8a70 234 * Usually followed by mbedtls_md_free() or mbedtls_md_starts().
mbedAustin 11:cada08fc8a70 235 *
mbedAustin 11:cada08fc8a70 236 * \param ctx Generic message digest context
mbedAustin 11:cada08fc8a70 237 * \param output Generic message digest checksum result
mbedAustin 11:cada08fc8a70 238 *
mbedAustin 11:cada08fc8a70 239 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 240 * verification fails.
mbedAustin 11:cada08fc8a70 241 */
mbedAustin 11:cada08fc8a70 242 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output );
mbedAustin 11:cada08fc8a70 243
mbedAustin 11:cada08fc8a70 244 /**
mbedAustin 11:cada08fc8a70 245 * \brief Output = message_digest( input buffer )
mbedAustin 11:cada08fc8a70 246 *
mbedAustin 11:cada08fc8a70 247 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 248 * \param input buffer holding the data
mbedAustin 11:cada08fc8a70 249 * \param ilen length of the input data
mbedAustin 11:cada08fc8a70 250 * \param output Generic message digest checksum result
mbedAustin 11:cada08fc8a70 251 *
mbedAustin 11:cada08fc8a70 252 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 253 * verification fails.
mbedAustin 11:cada08fc8a70 254 */
mbedAustin 11:cada08fc8a70 255 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
mbedAustin 11:cada08fc8a70 256 unsigned char *output );
mbedAustin 11:cada08fc8a70 257
mbedAustin 11:cada08fc8a70 258 #if defined(MBEDTLS_FS_IO)
mbedAustin 11:cada08fc8a70 259 /**
mbedAustin 11:cada08fc8a70 260 * \brief Output = message_digest( file contents )
mbedAustin 11:cada08fc8a70 261 *
mbedAustin 11:cada08fc8a70 262 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 263 * \param path input file name
mbedAustin 11:cada08fc8a70 264 * \param output generic message digest checksum result
mbedAustin 11:cada08fc8a70 265 *
mbedAustin 11:cada08fc8a70 266 * \return 0 if successful,
mbedAustin 11:cada08fc8a70 267 * MBEDTLS_ERR_MD_FILE_IO_ERROR if file input failed,
mbedAustin 11:cada08fc8a70 268 * MBEDTLS_ERR_MD_BAD_INPUT_DATA if md_info was NULL.
mbedAustin 11:cada08fc8a70 269 */
mbedAustin 11:cada08fc8a70 270 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path,
mbedAustin 11:cada08fc8a70 271 unsigned char *output );
mbedAustin 11:cada08fc8a70 272 #endif /* MBEDTLS_FS_IO */
mbedAustin 11:cada08fc8a70 273
mbedAustin 11:cada08fc8a70 274 /**
mbedAustin 11:cada08fc8a70 275 * \brief Set HMAC key and prepare to authenticate a new message.
mbedAustin 11:cada08fc8a70 276 * Usually called after mbedtls_md_setup() or mbedtls_md_hmac_finish().
mbedAustin 11:cada08fc8a70 277 *
mbedAustin 11:cada08fc8a70 278 * \param ctx HMAC context
mbedAustin 11:cada08fc8a70 279 * \param key HMAC secret key
mbedAustin 11:cada08fc8a70 280 * \param keylen length of the HMAC key in bytes
mbedAustin 11:cada08fc8a70 281 *
mbedAustin 11:cada08fc8a70 282 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 283 * verification fails.
mbedAustin 11:cada08fc8a70 284 */
mbedAustin 11:cada08fc8a70 285 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
mbedAustin 11:cada08fc8a70 286 size_t keylen );
mbedAustin 11:cada08fc8a70 287
mbedAustin 11:cada08fc8a70 288 /**
mbedAustin 11:cada08fc8a70 289 * \brief Generic HMAC process buffer.
mbedAustin 11:cada08fc8a70 290 * Called between mbedtls_md_hmac_starts() or mbedtls_md_hmac_reset()
mbedAustin 11:cada08fc8a70 291 * and mbedtls_md_hmac_finish().
mbedAustin 11:cada08fc8a70 292 * May be called repeatedly.
mbedAustin 11:cada08fc8a70 293 *
mbedAustin 11:cada08fc8a70 294 * \param ctx HMAC context
mbedAustin 11:cada08fc8a70 295 * \param input buffer holding the data
mbedAustin 11:cada08fc8a70 296 * \param ilen length of the input data
mbedAustin 11:cada08fc8a70 297 *
mbedAustin 11:cada08fc8a70 298 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 299 * verification fails.
mbedAustin 11:cada08fc8a70 300 */
mbedAustin 11:cada08fc8a70 301 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input,
mbedAustin 11:cada08fc8a70 302 size_t ilen );
mbedAustin 11:cada08fc8a70 303
mbedAustin 11:cada08fc8a70 304 /**
mbedAustin 11:cada08fc8a70 305 * \brief Output HMAC.
mbedAustin 11:cada08fc8a70 306 * Called after mbedtls_md_hmac_update().
mbedAustin 11:cada08fc8a70 307 * Usually followed my mbedtls_md_hmac_reset(), mbedtls_md_hmac_starts(),
mbedAustin 11:cada08fc8a70 308 * or mbedtls_md_free().
mbedAustin 11:cada08fc8a70 309 *
mbedAustin 11:cada08fc8a70 310 * \param ctx HMAC context
mbedAustin 11:cada08fc8a70 311 * \param output Generic HMAC checksum result
mbedAustin 11:cada08fc8a70 312 *
mbedAustin 11:cada08fc8a70 313 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 314 * verification fails.
mbedAustin 11:cada08fc8a70 315 */
mbedAustin 11:cada08fc8a70 316 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output);
mbedAustin 11:cada08fc8a70 317
mbedAustin 11:cada08fc8a70 318 /**
mbedAustin 11:cada08fc8a70 319 * \brief Prepare to authenticate a new message with the same key.
mbedAustin 11:cada08fc8a70 320 * Called after mbedtls_md_hmac_finish() and before mbedtls_md_hmac_update().
mbedAustin 11:cada08fc8a70 321 *
mbedAustin 11:cada08fc8a70 322 * \param ctx HMAC context to be reset
mbedAustin 11:cada08fc8a70 323 *
mbedAustin 11:cada08fc8a70 324 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 325 * verification fails.
mbedAustin 11:cada08fc8a70 326 */
mbedAustin 11:cada08fc8a70 327 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx );
mbedAustin 11:cada08fc8a70 328
mbedAustin 11:cada08fc8a70 329 /**
mbedAustin 11:cada08fc8a70 330 * \brief Output = Generic_HMAC( hmac key, input buffer )
mbedAustin 11:cada08fc8a70 331 *
mbedAustin 11:cada08fc8a70 332 * \param md_info message digest info
mbedAustin 11:cada08fc8a70 333 * \param key HMAC secret key
mbedAustin 11:cada08fc8a70 334 * \param keylen length of the HMAC key in bytes
mbedAustin 11:cada08fc8a70 335 * \param input buffer holding the data
mbedAustin 11:cada08fc8a70 336 * \param ilen length of the input data
mbedAustin 11:cada08fc8a70 337 * \param output Generic HMAC-result
mbedAustin 11:cada08fc8a70 338 *
mbedAustin 11:cada08fc8a70 339 * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
mbedAustin 11:cada08fc8a70 340 * verification fails.
mbedAustin 11:cada08fc8a70 341 */
mbedAustin 11:cada08fc8a70 342 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
mbedAustin 11:cada08fc8a70 343 const unsigned char *input, size_t ilen,
mbedAustin 11:cada08fc8a70 344 unsigned char *output );
mbedAustin 11:cada08fc8a70 345
mbedAustin 11:cada08fc8a70 346 /* Internal use */
mbedAustin 11:cada08fc8a70 347 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data );
mbedAustin 11:cada08fc8a70 348
mbedAustin 11:cada08fc8a70 349 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 350 }
mbedAustin 11:cada08fc8a70 351 #endif
mbedAustin 11:cada08fc8a70 352
mbedAustin 11:cada08fc8a70 353 #endif /* MBEDTLS_MD_H */