public static extern bool pair_loop(IntPtr shared, string servicename, string extraData, IntPtr returnedStoredData, QrCallbackFunctionInternal qrCallback, IntPtr data, int loopVerifier);
public static extern bool auth(IntPtr shared, IntPtr authorizedUsers, IntPtr returnedStoredData, QrCallbackFunctionInternal qrCallback, IntPtr data, IntPtr localSymmetricKey);