@deftypefun {int} {gnutls_pem_base64_encode} (const char * @var{msg}, const gnutls_datum_t * @var{data}, char * @var{result}, size_t * @var{result_size})
@var{msg}: is a message to be put in the header (may be @code{NULL} )

@var{data}: contain the raw data

@var{result}: the place where base64 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 base64 encoding. This is the encoding used in PEM messages.

The output string will be null terminated, although the output size will
not include the terminating null.

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