pub unsafe extern "C" fn nettle_ocb_decrypt_message(
ocb_key: *const ocb_key,
encrypt_ctx: *const c_void,
encrypt: nettle_cipher_func,
decrypt_ctx: *const c_void,
decrypt: nettle_cipher_func,
nlength: usize,
nonce: *const u8,
alength: usize,
adata: *const u8,
tlength: usize,
mlength: usize,
dst: *mut u8,
src: *const u8,
) -> c_int