@deftypefun {int} {gnutls_hex_encode} (const gnutls_datum_t * @var{data}, char * @var{result}, size_t * @var{result_size})
@var{data}: contain the raw data

@var{result}: the place where hex data will be copied

@var{result_size}: holds the size of the result

This function will convert the given data to printable data, using
the hex encoding, as used in the PSK password files.

Note that the size of the result includes the null terminator.

@strong{Returns:} @code{GNUTLS_E_SHORT_MEMORY_BUFFER}  if the buffer given is not
long enough, or 0 on success.
@end deftypefun