



@deftypefun {int} {gnutls_openpgp_crt_get_subkey_id} (gnutls_openpgp_crt_t @var{key}, unsigned int @var{idx}, gnutls_openpgp_keyid_t @var{keyid})
@var{key}: the structure that contains the OpenPGP public key.

@var{idx}: the subkey index

@var{keyid}: the buffer to save the keyid.

Get the subkey's key-id.

@strong{Returns:} the 64-bit keyID of the OpenPGP key.
@end deftypefun
