private void EncodeMessage()
{
Bitmap bitmap = (Bitmap)imagePictureBox.BackgroundImage;
if (!String.IsNullOrEmpty(messageTextBox.Text))
{
if ((bool)encryptTextCheckBox.IsChecked)
{
if (!String.IsNullOrEmpty(passwordTextBox.Password))
{
try
{
string encryptedText = Crypto.EncryptStringAES(messageTextBox.Text, passwordTextBox.Password);
bitmap = StegHelper.EmbedText(encryptedText, bitmap);
SaveFile(bitmap);
}
catch (Exception ex)
{
MessageBox.Show("An error occurred\n" + ex.Message);
}
}
else
{
MessageBox.Show("Please enter a password");
}
}
else
{
string message = "Do you not want to encrypt the text to be saved in the image by using a password?";
MessageBoxResult result = System.Windows.MessageBox.Show(message, "Information", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.None, System.Windows.MessageBoxOptions.DefaultDesktopOnly);
switch (result)
{
case MessageBoxResult.Yes:
encryptTextCheckBox.IsChecked = true;
System.Windows.MessageBox.Show("Please enter a password", "Enter password", MessageBoxButton.OK, MessageBoxImage.Information);
break;
case MessageBoxResult.No:
encryptTextCheckBox.IsChecked = false;
StegHelper.EmbedText(messageTextBox.Text, bitmap);
SaveFile(bitmap);
break;
}
;
}
}
else
{
MessageBox.Show("Please enter message or load message");
}
}
private void sendEncodedImageButton_Click(object sender, RoutedEventArgs e)
{
Bitmap bitmap = (Bitmap)emailImagePictureBox.BackgroundImage;
if (!String.IsNullOrEmpty(emailMessageTextBox.Text))
{
if ((bool)emailEncryptTextCheckBox.IsChecked)
{
if (!String.IsNullOrEmpty(emailPasswordTextBox.Password))
{
if (!String.IsNullOrEmpty(emailMessageSubjectTextBox.Text) && !String.IsNullOrEmpty(emailMessageBodyTextBox.Text))
{
//try
//{
string encryptedText = Crypto.EncryptStringAES(emailMessageTextBox.Text, emailPasswordTextBox.Password);
bitmap = StegHelper.EmbedText(encryptedText, bitmap);
SendImageWithAttachment(emailMessageSubjectTextBox.Text, emailMessageSubjectTextBox.Text, bitmap);
/*}
* catch (Exception ex)
* {
* MessageBox.Show("An error occurred\n");
* }*/
}
else
{
MessageBox.Show("Please enter message into subject and body of email");
}
}
else
{
MessageBox.Show("Please enter a password");
}
}
else
{
//Just send without encryption
}
}
else
{
MessageBox.Show("Please enter a message to encode into image");
}
}
private void decodeButton_Click(object sender, RoutedEventArgs e)
{
Bitmap bitmap = (Bitmap)decodeImagePictureBox.BackgroundImage;
if (decodeImagePictureBox.BackgroundImage != null)
{
if ((bool)decryptTextCheckBox.IsChecked)
{
if (!String.IsNullOrEmpty(decodePasswordTextBox.Password))
{
string extractedEncryptedText = StegHelper.ExtractText(bitmap);
try
{
string extractText = Crypto.DecryptStringAES(extractedEncryptedText, decodePasswordTextBox.Password);
decodeMessageTextBox.Text = extractText;
}
catch (Exception ex)
{
MessageBox.Show(String.Format("Wrong password", ex.Message));
}
}
else
{
MessageBox.Show("Please enter a password");
}
}
else
{
decodeMessageTextBox.Text = StegHelper.ExtractText(bitmap);
}
}
else
{
MessageBox.Show("Please select an image");
}
}
