mbed TLS v2.7.17
md.h
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1 
8 /*
9  * Copyright The Mbed TLS Contributors
10  * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
11  *
12  * This file is provided under the Apache License 2.0, or the
13  * GNU General Public License v2.0 or later.
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16  * Apache License 2.0:
17  *
18  * Licensed under the Apache License, Version 2.0 (the "License"); you may
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51 
52 #ifndef MBEDTLS_MD_H
53 #define MBEDTLS_MD_H
54 
55 #include <stddef.h>
56 
57 #if !defined(MBEDTLS_CONFIG_FILE)
58 #include "config.h"
59 #else
60 #include MBEDTLS_CONFIG_FILE
61 #endif
62 
63 #define MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE -0x5080
64 #define MBEDTLS_ERR_MD_BAD_INPUT_DATA -0x5100
65 #define MBEDTLS_ERR_MD_ALLOC_FAILED -0x5180
66 #define MBEDTLS_ERR_MD_FILE_IO_ERROR -0x5200
67 #define MBEDTLS_ERR_MD_HW_ACCEL_FAILED -0x5280
69 #ifdef __cplusplus
70 extern "C" {
71 #endif
72 
81 typedef enum {
93 
94 #if defined(MBEDTLS_SHA512_C)
95 #define MBEDTLS_MD_MAX_SIZE 64 /* longest known is SHA512 */
96 #else
97 #define MBEDTLS_MD_MAX_SIZE 32 /* longest known is SHA256 or less */
98 #endif
99 
104 
108 typedef struct {
111 
113  void *md_ctx;
114 
116  void *hmac_ctx;
118 
130 const int *mbedtls_md_list( void );
131 
141 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name );
142 
153 
163 
178 
179 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
180 #if defined(MBEDTLS_DEPRECATED_WARNING)
181 #define MBEDTLS_DEPRECATED __attribute__((deprecated))
182 #else
183 #define MBEDTLS_DEPRECATED
184 #endif
185 
203 #undef MBEDTLS_DEPRECATED
204 #endif /* MBEDTLS_DEPRECATED_REMOVED */
205 
224 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac );
225 
246  const mbedtls_md_context_t *src );
247 
257 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info );
258 
269 
279 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info );
280 
294 
310 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen );
311 
329 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output );
330 
348 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
349  unsigned char *output );
350 
351 #if defined(MBEDTLS_FS_IO)
352 
368 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path,
369  unsigned char *output );
370 #endif /* MBEDTLS_FS_IO */
371 
389 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
390  size_t keylen );
391 
410 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input,
411  size_t ilen );
412 
430 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output);
431 
447 
469 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
470  const unsigned char *input, size_t ilen,
471  unsigned char *output );
472 
473 /* Internal use */
474 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data );
475 
476 #ifdef __cplusplus
477 }
478 #endif
479 
480 #endif /* MBEDTLS_MD_H */
int mbedtls_md_init_ctx(mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info) MBEDTLS_DEPRECATED
This function selects the message digest algorithm to use, and allocates internal structures...
int mbedtls_md_hmac_reset(mbedtls_md_context_t *ctx)
This function prepares to authenticate a new message with the same key as the previous HMAC operation...
mbedtls_md_type_t mbedtls_md_get_type(const mbedtls_md_info_t *md_info)
This function extracts the message-digest type from the message-digest information structure...
int mbedtls_md_starts(mbedtls_md_context_t *ctx)
This function starts a message-digest computation.
void * hmac_ctx
Definition: md.h:116
int mbedtls_md_hmac_update(mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen)
This function feeds an input buffer into an ongoing HMAC computation.
void mbedtls_md_free(mbedtls_md_context_t *ctx)
This function clears the internal structure of ctx and frees any embedded internal structure...
void mbedtls_md_init(mbedtls_md_context_t *ctx)
This function initializes a message-digest context without binding it to a particular message-digest ...
int mbedtls_md_clone(mbedtls_md_context_t *dst, const mbedtls_md_context_t *src)
This function clones the state of an message-digest context.
void * md_ctx
Definition: md.h:113
Configuration options (set of defines)
int mbedtls_md_process(mbedtls_md_context_t *ctx, const unsigned char *data)
unsigned char mbedtls_md_get_size(const mbedtls_md_info_t *md_info)
This function extracts the message-digest size from the message-digest information structure...
int mbedtls_md_hmac_finish(mbedtls_md_context_t *ctx, unsigned char *output)
This function finishes the HMAC operation, and writes the result to the output buffer.
int mbedtls_md_setup(mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac)
This function selects the message digest algorithm to use, and allocates internal structures...
int mbedtls_md_hmac(const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen, const unsigned char *input, size_t ilen, unsigned char *output)
This function calculates the full generic HMAC on the input buffer with the provided key...
int mbedtls_md(const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen, unsigned char *output)
This function calculates the message-digest of a buffer, with respect to a configurable message-diges...
int mbedtls_md_finish(mbedtls_md_context_t *ctx, unsigned char *output)
This function finishes the digest operation, and writes the result to the output buffer.
#define MBEDTLS_DEPRECATED
Definition: md.h:183
const char * mbedtls_md_get_name(const mbedtls_md_info_t *md_info)
This function extracts the message-digest name from the message-digest information structure...
const int * mbedtls_md_list(void)
This function returns the list of digests supported by the generic digest module. ...
const mbedtls_md_info_t * mbedtls_md_info_from_type(mbedtls_md_type_t md_type)
This function returns the message-digest information associated with the given digest type...
int mbedtls_md_file(const mbedtls_md_info_t *md_info, const char *path, unsigned char *output)
This function calculates the message-digest checksum result of the contents of the provided file...
struct mbedtls_md_info_t mbedtls_md_info_t
Definition: md.h:103
int mbedtls_md_hmac_starts(mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen)
This function sets the HMAC key and prepares to authenticate a new message.
mbedtls_md_type_t
Enumeration of supported message digests.
Definition: md.h:81
const mbedtls_md_info_t * mbedtls_md_info_from_string(const char *md_name)
This function returns the message-digest information associated with the given digest name...
const mbedtls_md_info_t * md_info
Definition: md.h:110
int mbedtls_md_update(mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen)
This function feeds an input buffer into an ongoing message-digest computation.