pub unsafe extern "C" fn nettle_ccm_encrypt_message(
    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
)