private void startExtractButton_Click(object sender, EventArgs e)
{
ISteganographyAlgorithm steganography = new LeastSignificantBit();
Bitmap image;
try
{
image = steganography.GetBitmap(ImagePath);
}
catch (Exception)
{
MessageBox.Show("Podaj poprawną ścieżkę do obrazu!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (textOutputRadio.Checked)
{
outputDataRichTextBox.Text = steganography.ExtractText(image, Settings);
}
else
{
byte[] data = steganography.ExtractBytes(image, Settings);
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = "Zapisz odzyskane dane do pliku";
if (dialog.ShowDialog() == DialogResult.OK)
{
File.WriteAllBytes(dialog.FileName, data);
Process.Start(dialog.FileName);
}
}
}
/// <summary>
/// Инициализация представлений стегонографических алгоритмов.
/// </summary>
public StegoAlgorithms()
{
var algoLSB = new LeastSignificantBit();
var algoKDB = new CrossBrightnessBlueChannel();
var lsb = "Наименьшего значащего бита";
var kdb = "Алгоритм Куттера-Джордана-Боссена";
var vmpLSB = new PackerViewModel(algoLSB, lsb);
var vmuLSB = new UnpackerViewModel(algoLSB, lsb);
var vmpKDB = new PackerViewModel(algoKDB, kdb);
var vmuKDB = new UnpackerViewModel(algoKDB, kdb);
Add(new Tuple <PackerViewModel, UnpackerViewModel>(
vmpLSB, vmuLSB));
Add(new Tuple <PackerViewModel, UnpackerViewModel>(
vmpKDB, vmuKDB));
}
private void startButton_Click(object sender, EventArgs e)
{
ISteganographyAlgorithm steganography = new LeastSignificantBit();
Bitmap image;
Bitmap newImage;
try
{
image = steganography.GetBitmap(ImagePath);
}
catch (Exception)
{
MessageBox.Show("Podaj poprawną ścieżkę do obrazu!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (textInputRadio.Checked)
{
string message = inputDataRichTextBox.Text;
if (String.IsNullOrEmpty(message))
{
MessageBox.Show("Podaj tekst do ukrycia w obrazie!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (BitmapConverter.CalculateOffset(Settings.OffsetX, Settings.OffsetY, image.Width, image.Height, Settings.Direction) + message.Length * 3
> image.Width * image.Height)
{
MessageBox.Show("Podany tekst jest zbyt duży!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
newImage = steganography.HideText(message, image, Settings);
}
else
{
byte[] data;
try
{
data = File.ReadAllBytes(DataFilePath);
}
catch (Exception)
{
MessageBox.Show("Podaj poprawną ścieżkę do pliku!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (BitmapConverter.CalculateOffset(Settings.OffsetX, Settings.OffsetY, image.Width, image.Height, Settings.Direction) + data.Length * 3
> image.Width * image.Height)
{
MessageBox.Show("Podany tekst jest zbyt duży!", "Błąd", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
newImage = steganography.HideBytes(data, image, Settings);
}
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = "Zapisz nowy obraz i ustawienia algorytmu.";
dialog.Filter = "BMP Image (*.bmp)|*.bmp";
dialog.DefaultExt = ".bmp";
if (dialog.ShowDialog() == DialogResult.OK)
{
newImage.Save(dialog.FileName, ImageFormat.Bmp);
Settings.Save(dialog.FileName + ".json");
Process.Start(dialog.FileName);
}
}
