@deftypefun {int} {gnutls_aead_cipher_init} (gnutls_aead_cipher_hd_t * @var{handle}, gnutls_cipher_algorithm_t @var{cipher}, const gnutls_datum_t * @var{key})
@var{handle}: is a @code{gnutls_aead_cipher_hd_t}  type.

@var{cipher}: the authenticated-encryption algorithm to use

@var{key}: The key to be used for encryption

This function will initialize an context that can be used for
encryption/decryption of data. This will effectively use the
current crypto backend in use by gnutls or the cryptographic
accelerator in use.

@strong{Returns:} Zero or a negative error code on error.

@strong{Since:} 3.4.0
@end deftypefun