private async void InitialSetupButton_Click(object sender, RoutedEventArgs e)
        {
            String PWD = SetupAPasswordBox.Password;

            Debug.WriteLine(PWD);
            Key = CryptoInterface.GestAesKey(PWD);
            IBuffer X = CryptoInterface.CreateTestfile();
            await StorageInterface.WriteBufferToRoamingFolder("PWM/A", X);

            await StorageInterface.WriteBufferToRoamingFolder("PWM/B", CryptoInterface.EncryptAes(Key, X));

            await CryptoInterface.InitialSetup(Key);

            await CryptoInterface.StorePasswords("Dieser Passwortmanager" + INTRASPLIT + "Kein Benutzername" + INTRASPLIT + PWD + INTERSPLIT, Key);

            Debug.WriteLine("HAVE DONE SETUP WITH PASSWORD");
            MODE_REGULAR.Visibility = MODE_REGULAR_BAR.Visibility = Visibility.Visible;
            MODE_LOGIN.Visibility   = MODE_SETUP.Visibility = Visibility.Collapsed;
            await Refresh();
        }
        public static async Task StorePasswords(String Passwords, CryptographicKey AesKey)
        {
            CryptographicKey k = await GetRasKey(AesKey);

            int a = int.Parse(await StorageInterface.ReadFromRoamingFolder("PWM/INDEX"));

            for (int i = 0; i < a; i++)
            {
                await StorageInterface.DeleteFromRoamingFolder("PWM/Passwords" + i);
            }


            String[] PWD = Passwords.DivideToLength(768);
            await StorageInterface.WriteToRoamingFolder("PWM/INDEX", PWD.Length.ToString());

            for (int i = 0; i < PWD.Length; i++)
            {
                IBuffer plain   = CryptographicBuffer.ConvertStringToBinary(PWD[i], BinaryStringEncoding.Utf8);
                IBuffer cryptic = CryptographicEngine.Encrypt(k, plain, null);
                await StorageInterface.WriteBufferToRoamingFolder("PWM/Passwords" + i, cryptic);
            }
        }
 private static async void StoreRsaKey(CryptographicKey key, CryptographicKey aesKey)
 {
     await StorageInterface.WriteBufferToRoamingFolder("PWM/RsaKey", EncryptAes(aesKey, key.Export()));
 }