@deftypefun {int} {gnutls_pkcs12_bag_set_key_id} (gnutls_pkcs12_bag_t @var{bag}, unsigned @var{indx}, const gnutls_datum_t * @var{id})
@var{bag}: The bag

@var{indx}: The bag's element to add the id

@var{id}: the ID

This function will add the given key ID, to the specified, by the
index, bag element. The key ID will be encoded as a 'Local key
identifier' bag attribute, which is usually used to distinguish
the local private key and the certificate pair.

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