libkeccak_hmac_initialise(3)

libkeccak_hmac_initialise - Initialise HMAC-hashing state

#include <libkeccak.h>


int libkeccak_hmac_initialise(struct libkeccak_hmac_state *state, const struct libkeccak_spec *spec,
                              const void *key, size_t key_length);

The libkeccak_hmac_initialise() function initialises *state and sets the algorithm tuning parameters to those specified by *spec, and the key to key of length key_length.

The libkeccak_hmac_initialise() function returns 0 upon successful completion. On error, -1 is returned and errno is set to describe the error.

The libkeccak_hmac_initialise() function may fail for any specified for the functions malloc(3) and realloc(3).

libkeccak_hmac_create(3), libkeccak_hmac_destroy(3), libkeccak_hmac_fast_destroy(3), libkeccak_hmac_copy(3), libkeccak_hmac_marshal_size(3), libkeccak_spec_sha3(3), libkeccak_spec_shake(3), libkeccak_spec_rawshake(3), libkeccak_spec_check(3), libkeccak_generalised_spec_initialise(3), libkeccak_state_initialise(3)

libkeccak_degeneralise_spec(3), libkeccak_hmac_copy(3), libkeccak_hmac_create(3), libkeccak_hmac_destroy(3), libkeccak_hmac_digest(3), libkeccak_hmac_fast_destroy(3), libkeccak_hmac_fast_digest(3), libkeccak_hmac_fast_free(3), libkeccak_hmac_fast_update(3), libkeccak_hmac_free(3), libkeccak_hmac_reset(3), libkeccak_hmac_set_key(3), libkeccak_hmac_update(3), libkeccak_spec_check(3), libkeccak_spec_rawshake(3), libkeccak_spec_sha3(3), libkeccak_spec_shake(3), libkeccak_state_initialise(3), libkeccak(7)