// TODO Make values dependent on settings
private async void Encrypt_Click(object sender, RoutedEventArgs e)
{
EncryptLoadingGif.Visibility = Visibility.Visible;
// Create a random salt and iv
var salt = new byte[16];
var iv = new byte[16];
var rng = new RNGCryptoServiceProvider();
rng.GetBytes(salt);
rng.GetBytes(iv);
// Pre declaration of them for assigning during the secure string scope
string filePath = FileTextBox.Text;
if (!File.Exists(filePath))
{
EncryptOutput.Content = "File not valid";
return;
}
// Assign the values to the CryptographicInfo object
var data = new AesCryptographicInfo
{
CryptoManager = typeof(TripleDesCryptoManager).AssemblyQualifiedName,
Hmac = null,
InstanceKeyCreator = new KeyCreator
{
root_HashAlgorithm = typeof(SCryptKeyDerive).AssemblyQualifiedName,
PerformanceDerivative = _performanceDerivative.PerformanceDerivativeValue,
salt = salt
},
EncryptionModeInfo = new EncryptionModeInfo
{
InitializationVector = iv,
KeySize = KeySize,
BlockSize = 128,
Mode = CipherMode.CBC
}
};
// Run the encryption in a separate thread and return control to the UI thread
await Task.Run(() => EncryptDataWithHeader(data, EncryptPasswordBox.SecurePassword, filePath));
EncryptLoadingGif.Visibility = Visibility.Hidden;
}
private async void Decrypt_Click(object sender, RoutedEventArgs e)
{
DecryptLoadingGif.Visibility = Visibility.Visible;
// Create the object used to represent the header data
var data = new AesCryptographicInfo();
// Get the path from the box
string outFilePath = DecryptFileLocBox.Text;
// Read the header
await Task.Run(() => data = (AesCryptographicInfo)data.ReadHeaderFromFile(outFilePath));
// Decrypt the data
await Task.Run(() => DecryptDataWithHeader(data, DecryptPasswordBox.SecurePassword, outFilePath));
DecryptLoadingGif.Visibility = Visibility.Hidden;
}
