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#ifndef CRYPTO__HMAC__H__
#define CRYPTO__HMAC__H__
typedef void (*hmac_init_fn)(void*);
typedef void (*hmac_update_fn)(void*, const unsigned char*, unsigned long);
typedef void (*hmac_finalize_fn)(void*, unsigned char*);
typedef void (*hmac_extract_fn)(const void*, void*);
typedef void (*hmac_inject_fn)(void*, const void*);
struct hmac_control_block
{
unsigned state_size;
unsigned block_size;
unsigned digest_size;
unsigned midstate_size;
hmac_init_fn init;
hmac_update_fn update;
hmac_finalize_fn finalize;
hmac_extract_fn extract;
hmac_inject_fn inject;
};
extern const struct hmac_control_block hmac_md5;
extern const struct hmac_control_block hmac_sha1;
extern const struct hmac_control_block hmac_sha256;
extern const struct hmac_control_block hmac_sha384;
extern const struct hmac_control_block hmac_sha512;
struct str;
extern void hmac_prepare(const struct hmac_control_block* hcb,
void* midstate,
const struct str* secret);
extern void hmac_finish(const struct hmac_control_block* hcb,
const void* midstate,
const struct str* nonce,
void* outout);
extern void hmac(const struct hmac_control_block* hcb,
const struct str* secret,
const struct str* nonce,
void* output);
#endif
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