private void DecryptFile_Button_Click(object sender, RoutedEventArgs e)
{
var inputFilePath = decryptionInputFileBox.Text;
var fileRootPath = Path.GetDirectoryName(inputFilePath);
var inputFileError = ValidateInputPath(inputFilePath);
var extension = extension_Label.Content.ToString();
var outputFileName = Path.Combine(fileRootPath, decryptionOutputFileBox.Text);
try
{
if (!string.IsNullOrEmpty(Path.GetExtension(outputFileName)))
{
throw new ArgumentException("You don't need to add file extension in the name - it's appended in the encrypted file. Provided extension will be overwritten.");
}
}
catch (ArgumentException ex)
{
outputFileName = Path.GetFileNameWithoutExtension(outputFileName);
outputFileName += extension;
outputFileName = Path.Combine(fileRootPath, outputFileName);
MessageBox.Show(ex.Message);
}
var outputFileError = ValidateOutputPath(outputFileName);
if (inputFileError != null)
{
MessageBox.Show(inputFileError);
return;
}
if (outputFileError != null)
{
MessageBox.Show(outputFileError);
return;
}
try
{
FileEncryption.BufferSize = 1 << 22;
var selectedUser = (User)decryptionRecipientsList.SelectedItem;
if (selectedUser == null)
{
MessageBox.Show("Please choose a user.");
return;
}
var password = decryptionPassword.Password;
FileEncryption.InitializeDecryption(inputFilePath, outputFileName, selectedUser, password);
}
catch (Exception)
{
MessageBox.Show("Error encountered during decryption");
}
}
public static Key LoadPrivateKey(string path, string password)
{
var encryptedContent = File.ReadAllBytes(path);
var passwordHash = GenerateHash(password, true);
var decryptedConten = FileEncryption.DecryptPrivateKey(encryptedContent, passwordHash);
return(new Key(decryptedConten));
}
private void DecryptionInputButton_Click(object sender, RoutedEventArgs e)
{
var openFileDialog = new OpenFileDialog();
if (openFileDialog.ShowDialog() == true)
{
decryptionInputFileBox.Text = openFileDialog.FileName;
FileEncryption.LoadPossibleRecipientsAndFileType(openFileDialog.FileName, decryptionRecipientsList, extension_Label);
}
}
public static void GenerateKeyPair(string publicKeyPath, string privateKeyPath, string privateKeyPassword)
{
using (var rsa = new RSACryptoServiceProvider(1024))
{
try
{
File.WriteAllText(publicKeyPath, rsa.ToXmlString(false));
var passwordHash = GenerateHash(privateKeyPassword, true);
var priv = FileEncryption.EncryptPrivateKey(rsa.ToXmlString(true), passwordHash);
File.WriteAllBytes(privateKeyPath, priv);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
rsa.PersistKeyInCsp = false;
}
}
}
private void EncryptFile_Button_Click(object sender, RoutedEventArgs e)
{
var inputFilePath = inputFile_TextBox.Text;
var fileRootPath = Path.GetDirectoryName(inputFilePath);
var inputFileError = ValidateInputPath(inputFilePath);
var outputFileName = Path.Combine(fileRootPath, outputFile_TextBox.Text);
var outputFileError = ValidateOutputPath(outputFileName);
if (inputFileError != null)
{
MessageBox.Show(inputFileError);
return;
}
if (outputFileError != null)
{
MessageBox.Show(outputFileError);
return;
}
try
{
FileEncryption.Users = receiversListBox.Items.Cast <User>().ToList();
FileEncryption.CipheringMode = GetSelectedCipherMode();
FileEncryption.KeySize = Int32.Parse(keySizeComboBox.Text);
FileEncryption.BufferSize = 1 << 22;
//FileEncryption.FeedbackSize = Int32.Parse(feedbackSizeComboBox.Text);
FileEncryption.IV = GetSaltBytes(8);
FileEncryption.InitializeEncryption(inputFilePath, outputFileName);
}
catch (Exception ex)
{
MessageBox.Show("Error during decryption: " + ex);
}
}
