@deftypefun {int} {gnutls_key_generate} (gnutls_datum_t * @var{key}, unsigned int @var{key_size}) @var{key}: is a pointer to a @code{gnutls_datum_t} which will contain a newly created key @var{key_size}: the number of bytes of the key Generates a random key of @code{key_size} bytes. @strong{Returns:} On success, @code{GNUTLS_E_SUCCESS} (0) is returned, or an error code. @strong{Since:} 3.0 @end deftypefun