PolarSSL v1.2.10
md.h
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1 
29 #ifndef POLARSSL_MD_H
30 #define POLARSSL_MD_H
31 
32 #include <string.h>
33 
34 #if defined(_MSC_VER) && !defined(inline)
35 #define inline _inline
36 #else
37 #if defined(__ARMCC_VERSION) && !defined(inline)
38 #define inline __inline
39 #endif /* __ARMCC_VERSION */
40 #endif /*_MSC_VER */
41 
42 #define POLARSSL_ERR_MD_FEATURE_UNAVAILABLE -0x5080
43 #define POLARSSL_ERR_MD_BAD_INPUT_DATA -0x5100
44 #define POLARSSL_ERR_MD_ALLOC_FAILED -0x5180
45 #define POLARSSL_ERR_MD_FILE_IO_ERROR -0x5200
47 typedef enum {
57 } md_type_t;
58 
59 #define POLARSSL_MD_MAX_SIZE 64 /* longest known is SHA512 */
60 
65 typedef struct {
68 
70  const char * name;
71 
73  int size;
74 
76  void (*starts_func)( void *ctx );
77 
79  void (*update_func)( void *ctx, const unsigned char *input, size_t ilen );
80 
82  void (*finish_func)( void *ctx, unsigned char *output );
83 
85  void (*digest_func)( const unsigned char *input, size_t ilen,
86  unsigned char *output );
87 
89  int (*file_func)( const char *path, unsigned char *output );
90 
92  void (*hmac_starts_func)( void *ctx, const unsigned char *key, size_t keylen );
93 
95  void (*hmac_update_func)( void *ctx, const unsigned char *input, size_t ilen );
96 
98  void (*hmac_finish_func)( void *ctx, unsigned char *output);
99 
101  void (*hmac_reset_func)( void *ctx );
102 
104  void (*hmac_func)( const unsigned char *key, size_t keylen,
105  const unsigned char *input, size_t ilen,
106  unsigned char *output );
107 
109  void * (*ctx_alloc_func)( void );
110 
112  void (*ctx_free_func)( void *ctx );
113 
114 } md_info_t;
115 
119 typedef struct {
122 
124  void *md_ctx;
125 } md_context_t;
126 
127 #define MD_CONTEXT_T_INIT { \
128  NULL, /* md_info */ \
129  NULL, /* md_ctx */ \
130 }
131 
132 #ifdef __cplusplus
133 extern "C" {
134 #endif
135 
142 const int *md_list( void );
143 
153 const md_info_t *md_info_from_string( const char *md_name );
154 
164 const md_info_t *md_info_from_type( md_type_t md_type );
165 
179 int md_init_ctx( md_context_t *ctx, const md_info_t *md_info );
180 
190 int md_free_ctx( md_context_t *ctx );
191 
199 static inline unsigned char md_get_size( const md_info_t *md_info )
200 {
201  if( md_info == NULL )
202  return( 0 );
203 
204  return md_info->size;
205 }
206 
214 static inline md_type_t md_get_type( const md_info_t *md_info )
215 {
216  if( md_info == NULL )
217  return( POLARSSL_MD_NONE );
218 
219  return md_info->type;
220 }
221 
229 static inline const char *md_get_name( const md_info_t *md_info )
230 {
231  if( md_info == NULL )
232  return( NULL );
233 
234  return md_info->name;
235 }
236 
245 int md_starts( md_context_t *ctx );
246 
257 int md_update( md_context_t *ctx, const unsigned char *input, size_t ilen );
258 
268 int md_finish( md_context_t *ctx, unsigned char *output );
269 
281 int md( const md_info_t *md_info, const unsigned char *input, size_t ilen,
282  unsigned char *output );
283 
295 int md_file( const md_info_t *md_info, const char *path, unsigned char *output );
296 
307 int md_hmac_starts( md_context_t *ctx, const unsigned char *key, size_t keylen );
308 
319 int md_hmac_update( md_context_t *ctx, const unsigned char *input, size_t ilen );
320 
330 int md_hmac_finish( md_context_t *ctx, unsigned char *output);
331 
340 int md_hmac_reset( md_context_t *ctx );
341 
355 int md_hmac( const md_info_t *md_info, const unsigned char *key, size_t keylen,
356  const unsigned char *input, size_t ilen,
357  unsigned char *output );
358 
359 #ifdef __cplusplus
360 }
361 #endif
362 
363 #endif /* POLARSSL_MD_H */
int md(const md_info_t *md_info, const unsigned char *input, size_t ilen, unsigned char *output)
Output = message_digest( input buffer )
int md_starts(md_context_t *ctx)
Set-up the given context for a new message digest.
int md_file(const md_info_t *md_info, const char *path, unsigned char *output)
Output = message_digest( file contents )
int md_init_ctx(md_context_t *ctx, const md_info_t *md_info)
Initialises and fills the message digest context structure with the appropriate values.
static unsigned char md_get_size(const md_info_t *md_info)
Returns the size of the message digest output.
Definition: md.h:199
const md_info_t * md_info_from_string(const char *md_name)
Returns the message digest information associated with the given digest name.
static md_type_t md_get_type(const md_info_t *md_info)
Returns the type of the message digest output.
Definition: md.h:214
const md_info_t * md_info
Information about the associated message digest.
Definition: md.h:121
md_type_t
Definition: md.h:47
const md_info_t * md_info_from_type(md_type_t md_type)
Returns the message digest information associated with the given digest type.
const int * md_list(void)
Returns the list of digests supported by the generic digest module.
int md_hmac_starts(md_context_t *ctx, const unsigned char *key, size_t keylen)
Generic HMAC context setup.
void * md_ctx
Digest-specific context.
Definition: md.h:124
int md_hmac(const md_info_t *md_info, const unsigned char *key, size_t keylen, const unsigned char *input, size_t ilen, unsigned char *output)
Output = Generic_HMAC( hmac key, input buffer )
int md_hmac_reset(md_context_t *ctx)
Generic HMAC context reset.
int md_hmac_update(md_context_t *ctx, const unsigned char *input, size_t ilen)
Generic HMAC process buffer.
const char * name
Name of the message digest.
Definition: md.h:70
int size
Output length of the digest function.
Definition: md.h:73
static const char * md_get_name(const md_info_t *md_info)
Returns the name of the message digest output.
Definition: md.h:229
md_type_t type
Digest identifier.
Definition: md.h:67
int md_finish(md_context_t *ctx, unsigned char *output)
Generic message digest final digest.
int md_free_ctx(md_context_t *ctx)
Free the message-specific context of ctx.
Message digest information.
Definition: md.h:65
int md_update(md_context_t *ctx, const unsigned char *input, size_t ilen)
Generic message digest process buffer.
int md_hmac_finish(md_context_t *ctx, unsigned char *output)
Generic HMAC final digest.
Generic message digest context.
Definition: md.h:119