private void ButtonEncrypt_Click(object sender, RoutedEventArgs e)
{
iv = null;
if (string.IsNullOrWhiteSpace(textBoxPW.Text))
{
MessageBox.Show(
"Passwort darf nicht leer sein!",
"Fehler",
MessageBoxButton.OK,
MessageBoxImage.Error);
assistant.WriteLog("Fehler: Passwort leer!");
}
else if (string.IsNullOrWhiteSpace(textBoxIN.Text))
{
MessageBox.Show(
"Eingabefeld darf nicht leer sein!",
"Fehler",
MessageBoxButton.OK,
MessageBoxImage.Error);
assistant.WriteLog("Fehler: Eingabe leer!");
}
else
{
try
{
if (iv == null)
{
iv = assistant.RandomGen(16);
assistant.WriteLog("IV erstellt!");
}
assistant.CreateSalt();
assistant.SetIV(iv);
assistant.SetPW(textBoxPW.Text);
aes.SetParams(assistant.GetPW(), assistant.GetIV());
textBoxOUT.Text = aes.Encrypt(textBoxIN.Text);
if (CheckBoxAddIV.IsChecked == true)
{
textBoxOUT.Text += " :::/ " + assistant.GetIV() + " ::::: " + assistant.GetSalt();
}
assistant.WriteLog("Text verschlüsselt!");
}
catch (Exception err)
{
MessageBox.Show(
"Kann nicht Verschlüsseln!",
"Fehler",
MessageBoxButton.OK,
MessageBoxImage.Error);
assistant.WriteLog("Fehler: Verschlüsseln fehlgeschlagen! " + err.Message);
}
}
}
public MainWindow()
{
InitializeComponent();
if (!Directory.Exists(dataDir))
{
Directory.CreateDirectory(dataDir);
assistant.CreateSalt();
assistant.SetIV(assistant.RandomGen(16));
StreamWriter sw = File.AppendText(cryptoData);
sw.Write("IV:" + assistant.GetIV() + Environment.NewLine);
sw.Write("Salt:" + assistant.GetSalt());
sw.Close();
}
else
{
}
string content = File.ReadAllText(cryptoData);
assistant.SetIV(content.Substring(3, 16));
assistant.SetSalt(content.Substring(content.LastIndexOf("Salt:") + 5));
assistant.SetPW(pass);
myAes.SetParams(assistant.GetPW(), assistant.GetIV());
}
