private void BtnWipe_Click(object sender, RoutedEventArgs e)
{
Stopwatch sp = Stopwatch.StartNew();
UpdateMainProgressBarDelegate updateMainPBar = new UpdateMainProgressBarDelegate(mainProgressBar.SetValue);
UpdateProgressBarDelegate updateProgressBarDelegate = new UpdateProgressBarDelegate(progressBar.SetValue);
_fileCount = files.Count;
int fileIndex = 1;
for (int i = _fileCount - 1; i >= 0; i--)
{
if (WipeFile(files[i]))
{
//progressBar.Value = Convert.ToInt32((double)fileIndex / _fileCount * 100);
Dispatcher.Invoke(updateProgressBarDelegate, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, (double)fileIndex / _fileCount * 100 });
files.RemoveAt(i);
fileIndex++;
}
FileListView.ItemsSource = files;
resultMsg.Text = $"{files.Count} files ready for shredding";
}
if (folders.Count > 0)
{
int folderCount = folders.Count;
for (int i = folders.Count - 1; i >= 0; i--)
{
Directory.Delete(folders[i]);
folders.RemoveAt(i);
FolderListView.ItemsSource = folders;
}
}
Dispatcher.Invoke(updateProgressBarDelegate, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, 100.0 });
Dispatcher.Invoke(updateMainPBar, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, 100.0 });
//for (int i = (int)progressBar.Minimum; i <= (int)progressBar.Maximum; i++)
//{
// Dispatcher.Invoke(updateProgressBarDelegate, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, Convert.ToDouble(i) });
//}
resultMsg.Text = $"Files successfully shreded";
Logging.LogMessage(LoggingLevel.Info, resultMsg.Text);
sp.Stop();
completedIn.Text = $"{sp.Elapsed.TotalMilliseconds.ToString("F3")} ms";
Logging.LogMessage(LoggingLevel.Info, completedIn.Text);
}
private bool WipeFile(FileModel file)
{
UpdateMainProgressBarDelegate updateMainPBar = new UpdateMainProgressBarDelegate(mainProgressBar.SetValue);
try
{
int timesToWrite = 10;
File.SetAttributes(file.Path, FileAttributes.Normal);
double sectors = Math.Ceiling(new FileInfo(file.Path).Length / 512.0);
byte[] dummyBuffer = new byte[512];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
for (int i = 0; i <= 3; i++)
{
byte[] infile = File.ReadAllBytes(file.Path);
AES.SetDefaultKey(FileControls.GenerateRandomKey(25));
if (infile.Length > 0)
{
FileStream inputStream = new FileStream(file.Path, FileMode.Open);
byte[] data = AES.Encrypt(infile);
inputStream.SetLength(0);
inputStream.Seek(0, SeekOrigin.Begin);
inputStream.Write(data, 0, data.Length);
for (int passIndex = 0; passIndex < timesToWrite; passIndex++)
{
inputStream.Position = 0;
for (int sectorIndex = 0; sectorIndex < sectors; sectorIndex++)
{
rng.GetBytes(dummyBuffer);
inputStream.Write(dummyBuffer, 0, dummyBuffer.Length);
}
Dispatcher.Invoke(updateMainPBar, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, (double)passIndex / timesToWrite * 100 });
}
//inputStream.SetLength(0);
inputStream.Close();
}
}
FileStream instream = new FileStream(file.Path, FileMode.Open);
instream.SetLength(0);
instream.Close();
DateTime dt = new DateTime(2037, 1, 1, 0, 0, 0);
File.SetCreationTime(file.Path, dt);
File.SetLastAccessTime(file.Path, dt);
File.SetLastWriteTime(file.Path, dt);
File.SetCreationTimeUtc(file.Path, dt);
File.SetLastAccessTimeUtc(file.Path, dt);
File.SetLastWriteTimeUtc(file.Path, dt);
File.Delete(file.Path);
AES.UnsetDefaultKey();
return(true);
}
catch (Exception)
{
return(false);
}
finally
{
if (folders.Count > 0)
{
}
}
}
