LIBKECCAK_HMAC_INITIALISE(3)                          Library Functions Manual

NAME
       libkeccak_hmac_initialise - Initialise HMAC-hashing state

SYNOPSIS
       #include <libkeccak.h>

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

       Link with -lkeccak.

DESCRIPTION
       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.

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

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

SEE ALSO
       libkeccak_hmac_create(3), libkeccak_hmac_destroy(3),
       libkeccak_hmac_fast_destroy(3), libkeccak_hmac_copy(3),
       libkeccak_spec_cshake(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      LIBKECCAK_HMAC_INITIALISE(3)