void picMaskImage_Click(object sender, EventArgs e)
{
try
{
if (openDialog.ShowDialog() == DialogResult.OK)
{
picMaskImage.BackgroundImage = Image.FromFile(openDialog.FileName);
maskImagePath = openDialog.FileName;
}
}
catch (Exception ex)
{
MsgBox msg = new MsgBox(ex.Message, MessageType.Error, ResponseButtons.OK);
msg.ShowDialog();
}
}
void Decrypt()
{
try
{
if (txtSource.Text == null || txtSource.Text.Trim() == string.Empty)
throw new Exception("Please specify file(s) to decrypt.");
if (string.IsNullOrEmpty(txtPassword.Text))
throw new Exception("Please specify the password for the encryption.");
//get source files
//for each source file
//get the embedded file
//if (delete source file), delete source file
//save embedded file (ask user to choose file name)
string[] sourceFiles = GetSourceFiles();
if (sourceFiles.Length == 0)
throw new Exception("Source file(s) could not be found.");
for (int index = 0; index < sourceFiles.Length; ++index)
{
byte[] embeddedFile = Steganographer.Dec(sourceFiles[index], txtPassword.Text);
if (embeddedFile == null)
throw new Exception("Decryption Failed.");
if (chckDeleteSource.Checked)
File.Delete(sourceFiles[index]);
if (saveDialog.ShowDialog() == DialogResult.OK)
{
FileSystemServices.WriteBytesToFile(saveDialog.FileName, embeddedFile);
}
}
}
catch (Exception ex)
{
MsgBox msg = new MsgBox(ex.Message, MessageType.Error, ResponseButtons.OK);
msg.ShowDialog();
}
}
void Encrypt()
{
try
{
if (txtSource.Text == null || txtSource.Text.Trim() == string.Empty)
throw new Exception("Please specify file(s) to encrypt.");
if (maskImagePath == null || maskImagePath.Trim() == string.Empty)
throw new Exception("Please click the large picture box to select the picture to use for masking.");
if (string.IsNullOrEmpty(txtPassword.Text))
throw new Exception("Please specify the password for the encryption.");
if (string.IsNullOrEmpty(txtConfirmPwd.Text))
throw new Exception("Please confirm the password for the encryption.");
if (txtConfirmPwd.Text != txtPassword.Text)
throw new Exception("You supplied two different passwords.");
//get source files
//for each source file
//generate the modified image
//if (delete source file), delete source file
//save modified image with automatically gened name (if file with name exists, raise alarm, ask user to choose)
string[] sourceFiles = GetSourceFiles();
if (sourceFiles.Length == 0)
throw new Exception("Source file(s) could not be found.");
for (int index = 0; index < sourceFiles.Length; ++index)
{
Bitmap bitmap = Steganographer.Enc(sourceFiles[index], maskImagePath, txtPassword.Text);
if (bitmap == null)
throw new Exception("Encryption Failed.");
if (chckDeleteSource.Checked)
File.Delete(sourceFiles[index]);
string filePath = sourceFiles[index];
string autoGenedName = filePath.Substring(0, filePath.LastIndexOf('\\')) + "\\" +
Path.GetFileNameWithoutExtension(sourceFiles[index]) + Path.GetExtension(maskImagePath);
if (File.Exists(autoGenedName))
{
if (saveDialog.ShowDialog() == DialogResult.OK)
{
bitmap.Save(saveDialog.FileName);//, ImageFormat.Png);
}
}
else
{
bitmap.Save(autoGenedName);
}
}
}
catch (Exception ex)
{
MsgBox msg = new MsgBox(ex.Message, MessageType.Error, ResponseButtons.OK);
msg.ShowDialog();
}
}
public Form1()
{
btnDelegate = SetBtnState;
msgDelegate = ShowMsgBox;
InitializeComponent();
}
public void OnAbout()
{
MsgBox msg = new MsgBox
(
App.FullName + "\n" +
"Version " + App.Version.ToString(4) + "\n" +
/*(Convert.ToChar(169)).ToString() + " 2015 " + Company.Name + " Corporation\n" +
"All rights reserved\n\n" +*/
App.Name + " demonstrates the possibiblity and potentials\n" +
"of steganography.\n" +
"I think the ability to hide info in the last bit of a byte in a\n" +
"picture is interesting. Since we are altering the last bit,\n" +
"you tend not to notice any difference in the image with the info.\n" +
"Of course you can always notice a difference in the size of the image."
/*+ "Warning:\n" +
"This computer program is protected by copyright laws\n" +
"and international treaties. Unauthorized reproduction\n" +
"or distribution of this program, or any portion of it,\n" +
"may result in severe civil and criminal penalties, and\n" +
"will be prosecuted to the maximum extent under the law"*/
,
""
,
MessageType.Information, ResponseButtons.OK);
msg.BannerImage = Properties.Resources.SplashScreen1;
msg.ShowDialog();
}
void Steganographer_Feedback(object sender, FeedbackEventArgs e)
{
statusLabel.Text = e.FilePath;
if (e.Type == FeedbackType.Progress || e.Type == FeedbackType.Begin || e.Type == FeedbackType.End)
{
statusLabel.Text += " " + e.Message + " ";
statusProgressBar.Value = e.WorkProgress;
}
else
{
MessageType msgType = MessageType.Error;
if (e.Type == FeedbackType.Information)
msgType = MessageType.Information;
else if (e.Type == FeedbackType.Question)
msgType = MessageType.Question;
else if (e.Type == FeedbackType.Warning)
msgType = MessageType.Warning;
MsgBox msg = new MsgBox(e.Message, msgType, ResponseButtons.OK);
msg.ShowDialog();
}
}
public void OnHelpTopics()
{
MsgBox msg = new MsgBox("For help topics, go to Start Page.", MessageType.Information,
ResponseButtons.OK);
msg.BannerImage = Properties.Resources.SplashScreen1;
msg.ShowDialog();
}
