private void BtnHideBMP_Click(object sender, RoutedEventArgs e)
{
if (targetPathBMP != "" && inputPathBMP != "")
{
try
{
Bitmap embedded = SteganoBMP.Embed(targetPathBMP, inputPathBMP);
SaveFileDialog save = new SaveFileDialog();
save.Filter = "Bitmap Image (.bmp)|*.bmp|Png Image (.png)|*.png";
bool?result = save.ShowDialog();
if (result == true)
{
string savePath = save.FileName;
EncoderParameters encoderParams = new EncoderParameters(1);
EncoderParameter encoderP = new EncoderParameter(Encoder.Quality, 100L);
encoderParams.Param[0] = encoderP;
embedded.Save(savePath, GetEncoder(savePath.Split('.').Last()), encoderParams);
embedded.Dispose();
showImages(targetPathBMP, savePath);
}
}
catch (FileTooLargeException fileTooLargeException)
{
MessageBox.Show(fileTooLargeException.Message);
}
}
}
private void btnDesOutputBitmap_Click(object sender, RoutedEventArgs e)
{
desTargetPathBMP = txtDesBitmap.Text;
if (!desTargetPathBMP.Equals(""))
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "Bitmap Image (.bmp)|*.bmp|Png Image (.png)|*.png";
bool?result = save.ShowDialog();
if (result == true)
{
java.lang.Class clazz = typeof(Encryption);
java.lang.Thread.currentThread().setContextClassLoader(clazz.getClassLoader());
String outputFile = save.FileName;
try
{
if (Encryption.encrypt(encryptionFile, "encryptForBMP", keyFile, EncryptionMode.ENCRYPT) == java.lang.Boolean.TRUE)
{
Bitmap embedded = SteganoBMP.Embed(desTargetPathBMP, "encryptForBMP.des");
String savePath = save.FileName;
EncoderParameters encoderParams = new EncoderParameters(1);
EncoderParameter encoderP = new EncoderParameter(Encoder.Quality, 100L);
encoderParams.Param[0] = encoderP;
embedded.Save(savePath, GetEncoder(savePath.Split('.').Last()), encoderParams);
embedded.Dispose();
File.Delete("encryptForBMP.des");
MessageBox.Show("File successfully encrypted to image file");
}
}
catch (java.io.IOException ex)
{
String error = ex.getMessage();
MessageBox.Show(error);
}
catch (FileTooLargeException fileTooLargeException)
{
MessageBox.Show(fileTooLargeException.Message);
}
}
}
else
{
MessageBox.Show("Please select a valid image file");
}
}
private void BtnExtractFromCarrier_Click(object sender, RoutedEventArgs e)
{
if (ExtractPathBMP != "" && ExtractTargetPathBMP != "")
{
string extension;
byte[] extracted = SteganoBMP.Extract(ExtractPathBMP, out extension);
string savePath = ExtractTargetPathBMP + "\\Extracted." + extension;
File.WriteAllBytes(savePath, extracted);
Process.Start(savePath);
}
}
private void btnDesOutputBitmapExtract_Click(object sender, RoutedEventArgs e)
{
desTargetPathBMPExtract = txtDesBitmapExtract.Text;
if (!desTargetPathBMPExtract.Equals(""))
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "All files (*.*)|*.*";
bool?result = save.ShowDialog();
if (result == true)
{
String extension;
byte[] extracted = SteganoBMP.Extract(desTargetPathBMPExtract, out extension);
string savePath = "extractedMessage." + extension;
File.WriteAllBytes(savePath, extracted);
java.lang.Class clazz = typeof(Encryption);
java.lang.Thread.currentThread().setContextClassLoader(clazz.getClassLoader());
String outputFile = save.FileName;
try
{
if (Encryption.encrypt("extractedMessage.des", outputFile, keyFile, EncryptionMode.DECRYPT) == java.lang.Boolean.TRUE)
{
File.Delete("extractedMessage.des");
MessageBox.Show("File successfully decrypted from image file");
}
}
catch (java.io.IOException ex)
{
String error = ex.getMessage();
MessageBox.Show(error);
}
}
}
else
{
MessageBox.Show("Please select a valid image file");
}
}
static void Main(string[] args)
{
String originalFilePath = @"..\..\testFiles\hide.txt";
String extractedFilePath = @"..\..\testFiles\extract";
String savePath = @"..\..\testFiles\save.png";
Bitmap originalImage = (Bitmap)Bitmap.FromFile(@"..\..\testFiles\test.png");
Bitmap steganoImage;
steganoImage = SteganoBMP.Embed(originalImage, originalFilePath);
EncoderParameters encoderParams = new EncoderParameters(1);
EncoderParameter encoderP = new EncoderParameter(Encoder.Quality, 100L);
encoderParams.Param[0] = encoderP;
steganoImage.Save(savePath, GetEncoder(ImageFormat.Png), encoderParams);
string extension;
byte[] file = SteganoBMP.Extract(steganoImage, out extension);
File.WriteAllBytes(extractedFilePath + "." + extension, file);
Console.Write("Done. Press any key.");
Console.ReadLine();
String orFilePath = @"..\..\testFiles\blub.txt";
String sPath = @"..\..\testFiles\resultJungle.wav";
String waveFile = @"..\..\testFiles\WelcometotheJungle.wav";
byte[] resultBytes = SteganoWav.Embed(waveFile, orFilePath);
File.WriteAllBytes(sPath, resultBytes);
byte[] originalBytes = SteganoWav.Extract(sPath);
File.WriteAllBytes(@"..\..\testFiles\resulttext." + SteganoWav.Extention, originalBytes);
Console.ReadLine();
}
unsafe private BitmapImage CalculateDiff(String embeddedPath, String originalPath)
{
using (Bitmap original = new Bitmap(originalPath))
using (Bitmap embedded = new Bitmap(embeddedPath))
using (Bitmap diff = new Bitmap(original.Width, original.Height))
{
BitmapData dataOrig = SteganoBMP.PrepareImage(original);
BitmapData dataEmbed = SteganoBMP.PrepareImage(embedded);
BitmapData dataDiff = SteganoBMP.PrepareImage(diff);
byte *ptrOrig = (byte *)dataOrig.Scan0;
byte *ptrEmbed = (byte *)dataEmbed.Scan0;
byte *ptrDiff = (byte *)dataDiff.Scan0;
int bytes = dataOrig.Stride * dataOrig.Height;
byte diffValue = 1;
if (chkAmplify.IsChecked == true)
{
diffValue = 255;
}
for (int i = 0; i < bytes; i++)
{
if (ptrOrig[i] != ptrEmbed[i])
{
ptrDiff[i] = diffValue;
}
}
original.UnlockBits(dataOrig);
embedded.UnlockBits(dataEmbed);
diff.UnlockBits(dataDiff);
return(Bitmap2BitmapImage(diff));
}
}