private void btn_decrypt_Click(object sender, EventArgs e)
{
String drcryptPassword = txt_decryptPassword.Text.ToString();
SteganographyHelper helper = new SteganographyHelper();
try
{
string encryptedData = SteganographyHelper.ExtractText(
new Bitmap(
Image.FromFile(imageToEncrypt)
)
);
string decryptedData = StringCipher.Decrypt(encryptedData, drcryptPassword);
decodedMessage = decryptedData;
dect_message.Text = decryptedData;
}
catch
{
MessageBox.Show("Something went Wrong!");
}
}
private void btn_encrypt_Click(object sender, EventArgs e)
{
String message = txt_message.Text.ToString();
String password = txt_password.Text.ToString();
SteganographyHelper helper = new SteganographyHelper();
try
{
if (imageToEncrypt.Equals(""))
{
MessageBox.Show("Image needs to Hide the Text, Please Select Image and Try Again!");
}
else
{
if (message.Equals(""))
{
MessageBox.Show("Your Message is Empty!");
}
else
{
String encryptedMessage = StringCipher.Encrypt(message, password);
Bitmap originalImage = new Bitmap(Image.FromFile(imageToEncrypt));
Bitmap imageWithHiddenData = SteganographyHelper.MergeText(encryptedMessage, originalImage);
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Title = "Save Encrypted Image";
saveFileDialog.CheckFileExists = false;
saveFileDialog.CheckPathExists = true;
saveFileDialog.DefaultExt = "bmp";
saveFileDialog.Filter = "Bitmap Images (*.bmp)|*.bmp | PNG Image (*.png)|*.png | All files (*.*)|*.*";
saveFileDialog.FilterIndex = 2;
saveFileDialog.RestoreDirectory = true;
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
imageThatEncrypted = saveFileDialog.FileName;
if (saveFileDialog.FilterIndex == 1)
{
imageWithHiddenData.Save(imageThatEncrypted, System.Drawing.Imaging.ImageFormat.Bmp);
}
else if (saveFileDialog.FilterIndex == 2)
{
imageWithHiddenData.Save(imageThatEncrypted, System.Drawing.Imaging.ImageFormat.Png);
}
else
{
imageWithHiddenData.Save(imageThatEncrypted, System.Drawing.Imaging.ImageFormat.Bmp);
}
MessageBox.Show("Your Text is Hidden inside the Image");
}
else
{
MessageBox.Show("Process Aborted!");
}
}
}
}
catch
{
MessageBox.Show("Your Message is Too length to store inside an Image!");
}
}
