pub unsafe extern "C" fn nettle_ocb_encrypt_message(
ocb_key: *const ocb_key,
cipher: *const c_void,
f: nettle_cipher_func,
nlength: usize,
nonce: *const u8,
alength: usize,
adata: *const u8,
tlength: usize,
clength: usize,
dst: *mut u8,
src: *const u8,
)