/// <summary>
/// Provides files recovery feature
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnRecoverFiles_Click(object sender, RoutedEventArgs e)
{
string securityAnswer = textBoxSecurityAnswer.Text.ToLower();
string password = textBoxRecoveryPassword.Password;
if (EncryptedFiles.Count.Equals(0))
{
MessageBox.Show("You have no files to recover.", "No encrypted files found", MessageBoxButton.OK, MessageBoxImage.Information);
}
else
{
if (DataCryptography.SHA512(securityAnswer).Equals(LoggedUser.GetAnswer()) && DataCryptography.SHA512(password).Equals(LoggedUser.GetPassword()))
{
MessageBoxResult result = MessageBox.Show("Do you want to recover your files? All your program settings and keys will be deleted.", "Files recovery system", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (result.Equals(MessageBoxResult.Yes))
{
string aesKey = DataCryptography.SHA512(DataCryptography.GenerateAesKey(this.Username,
password,
LoggedUser.GetQuestion(),
securityAnswer));
List <string> tempEncryptedFiles = new List <string>(EncryptedFiles);
EncryptedFiles.Clear();
Files.Clear();
Folders.Clear();
TrustedDevices.Clear();
var decryptionTask = Task.Run(() =>
{
foreach (string encryptedFilePath in tempEncryptedFiles)
{
string filePath = DataCryptography.FileDecrypt(encryptedFilePath, aesKey);
}
});
decryptionTask.Wait();
LoggedUser.SetPublicKeyXmlString(String.Empty);
LoggedUser.SetAesKey(aesKey);
IOClass.SaveFilesList(Files, this.UserFilesFilepath);
IOClass.SaveFilesList(EncryptedFiles, this.UserEncryptedFilesFilepath);
IOClass.SaveFoldersList(Folders, this.UserFoldersFilepath);
IOClass.SaveTrustedDevicesList(TrustedDevices, this.UserKeyDataFilepath);
IOClass.UpdateUser(LoggedUser);
bindFilesListBox();
bindFoldersListBox();
MessageBox.Show("Your files are decrypted now.", "Files recovery system", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
else
{
MessageBox.Show("Security answer or password incorrect!", "Files recovery system", MessageBoxButton.OK, MessageBoxImage.Warning);
}
}
}
/// <summary>
/// Deletes folder paths that are no longer protected
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void deleteFoldersBtn_Click(object sender, RoutedEventArgs e)
{
string selectedItem = listBoxFolders.SelectedItem.ToString();
ProcessDirectory(selectedItem, false);
IOClass.SaveFilesList(Files, this.UserFilesFilepath);
Folders.Remove(selectedItem);
IOClass.SaveFoldersList(Folders, this.UserFoldersFilepath);
listBoxFiles.ItemsSource = Files;
listBoxFolders.ItemsSource = Folders;
}
/// <summary>
/// Activates File Dialog and saves folder paths that will be protected
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void addFoldersBtn_Click(object sender, RoutedEventArgs e)
{
CommonOpenFileDialog folderDialog = new CommonOpenFileDialog
{
InitialDirectory = @"C:\",
IsFolderPicker = true
};
if (folderDialog.ShowDialog() == CommonFileDialogResult.Ok)
{
Folders = IOClass.ReadFoldersList(this.UserFoldersFilepath);
Folders.AddRange(folderDialog.FileNames);
foreach (string folderPath in folderDialog.FileNames)
{
ProcessDirectory(folderPath, true);
}
IOClass.SaveFilesList(Files, this.UserFilesFilepath);
listBoxFolders.ItemsSource = Folders;
listBoxFiles.ItemsSource = Files;
IOClass.SaveFoldersList(Folders, this.UserFoldersFilepath);
}
}
