@deftypefun {int} {gnutls_x509_ext_export_policies} (gnutls_x509_policies_t @var{policies}, gnutls_datum_t * @var{ext})
@var{policies}: A pointer to an initialized policies.

@var{ext}: The DER-encoded extension data; must be freed using @code{gnutls_free()} .

This function will convert the provided policies, to a certificate policy
DER encoded extension (2.5.29.32).

The  @code{ext} data will be allocated using @code{gnutls_malloc()} .

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a negative error value.

@strong{Since:} 3.3.0
@end deftypefun