decryptString method
Implementation
@override
Future<String?> decryptString({required String key, required String data}) async {
  return await methodChannel.invokeMethod<String?>('kDecrypt_string', {"key": key, "data": data});
}@override
Future<String?> decryptString({required String key, required String data}) async {
  return await methodChannel.invokeMethod<String?>('kDecrypt_string', {"key": key, "data": data});
}