@deftypefun {void} {gnutls_hmac_set_nonce} (gnutls_hmac_hd_t @var{handle}, const void * @var{nonce}, size_t @var{nonce_len}) @var{handle}: is a @code{gnutls_hmac_hd_t} type @var{nonce}: the data to set as nonce @var{nonce_len}: the length of data This function will set the nonce in the MAC algorithm. @strong{Since:} 3.2.0 @end deftypefun