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/* hmac-md5.h -- HMAC_MD5 functions
*/
#ifndef HMAC_MD5_H
#define HMAC_MD5_H 1
#define HMAC_MD5_SIZE 16
/* intermediate MD5 context */
typedef struct HMAC_MD5_CTX_s {
MD5_CTX ictx, octx;
} HMAC_MD5_CTX;
/* intermediate HMAC state
* values stored in network byte order (Big Endian)
*/
typedef struct HMAC_MD5_STATE_s {
UINT4 istate[4];
UINT4 ostate[4];
} HMAC_MD5_STATE;
#ifdef __cplusplus
extern "C" {
#endif
/* One step hmac computation
*
* digest may be same as text or key
*/
void _sasl_hmac_md5(const unsigned char *text, int text_len,
const unsigned char *key, int key_len,
unsigned char digest[HMAC_MD5_SIZE]);
/* create context from key
*/
void _sasl_hmac_md5_init(HMAC_MD5_CTX *hmac,
const unsigned char *key, int key_len);
/* precalculate intermediate state from key
*/
void _sasl_hmac_md5_precalc(HMAC_MD5_STATE *hmac,
const unsigned char *key, int key_len);
/* initialize context from intermediate state
*/
void _sasl_hmac_md5_import(HMAC_MD5_CTX *hmac, HMAC_MD5_STATE *state);
#define _sasl_hmac_md5_update(hmac, text, text_len) _sasl_MD5Update(&(hmac)->ictx, (text), (text_len))
/* finish hmac from intermediate result. Intermediate result is zeroed.
*/
void _sasl_hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
HMAC_MD5_CTX *hmac);
#ifdef __cplusplus
}
#endif
#endif /* HMAC_MD5_H */