void crypto_WorkHandler(object sender, CryptoEventArgs e)
{
this.Dispatcher.Invoke((Action)(() =>
{
ProgressBar.Value = e.CompletionPercentage;
}));
}
/// <summary>
///
/// </summary>
/// <param name="inputFile"></param>
/// <param name="outputFile"></param>
/// <param name="skey"></param>
public async void DecryptFile(string inputFile, string outputFile, string skey)
{
System.Diagnostics.Debug.WriteLine(DateTime.Now.ToString() + " --> Starting Decryption");
var e = new CryptoEventArgs();
Stopwatch sw = new Stopwatch();
sw.Start();
await Task.Factory.StartNew(() =>
{
try
{
using (FileStream fsCrypt = new FileStream(inputFile, FileMode.Open))
using (FileStream fsOut = new FileStream(outputFile, FileMode.Create))
using (ICryptoTransform decryptor = CreateAESKey(skey).CreateDecryptor())
using (CryptoStream cs = new CryptoStream(fsCrypt, decryptor, CryptoStreamMode.Read))
{
int data;
int counter = 1;
while ((data = cs.ReadByte()) != -1)
{
fsOut.WriteByte((byte)data);
e.CompletionPercentage = (int)((double)fsOut.Position / (double)fsOut.Length * 100);
//Through event on no more then a percentage
if (e.CompletionPercentage > counter)
{
Debug.WriteLine("% " + e.CompletionPercentage + "\tPosition: " + fsOut.Position + "\tLength: " + fsOut.Length);
WorkHandler(this, e);
counter++;
}
}
}
}
catch (Exception ex)
{
throw new Exception("Decryption Failed", ex);
}
});
sw.Stop();
var c = new CryptoCompleteEventArgs();
c.ElapsedTime = sw.Elapsed;
CompleteHandler(this, c);
Debug.WriteLine(DateTime.Now.ToString() + " <-- Finishing Decryption after " + sw.ElapsedMilliseconds);
}
