@deftypefun {int} {gnutls_hmac_fast} (gnutls_mac_algorithm_t @var{algorithm}, const void * @var{key}, size_t @var{keylen}, const void * @var{ptext}, size_t @var{ptext_len}, void * @var{digest})

@var{algorithm}: the hash algorithm to use

@var{key}: the key to use

@var{keylen}: the length of the key

@var{ptext}: the data to hash

@var{ptext_len}: the length of data to hash

@var{digest}: is the output value of the hash

This convenience function will hash the given data and return output

on a single call. Note, this call will not work for MAC algorithms

that require nonce (like UMAC or GMAC).

@strong{Returns:} Zero or a negative error code on error.

@strong{Since:} 2.10.0

@end deftypefun