private void btnDecode_Click_1(object sender, EventArgs e)
{
bmp = (Bitmap)imgPicture1.Image;
String plaintext = "";
if (txtFilelocation1.Text == String.Empty)
{
MessageBox.Show("Please choose image to Steganography!", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (txtPass1.Text == String.Empty)
{
MessageBox.Show("Password is empty!!", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
string textmahoa = LSB.extractText(bmp);
try
{
plaintext = Mahoa.DecryptPass(textmahoa, txtPass1.Text);
}
catch (Exception ex)
{
MessageBox.Show("Password is wrong!");
return;
}
txtDecode.Text = plaintext;
}
private void btnEndcode_Click(object sender, EventArgs e)
{
bmp = (Bitmap)imgPicture.Image;
if (txtFilelocation.Text == String.Empty)
{
MessageBox.Show("Please choose image to Steganography!", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (txtMessage.Text == String.Empty)
{
MessageBox.Show("Message is empty! Please try again.", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (txtPass.Text == String.Empty)
{
MessageBox.Show("Password is empty! Please try again.", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (txtPass.Text.Length < 8)
{
MessageBox.Show("Short passwords are easy to guess. Try one with at least 8 characters.", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (txtPass.Text != txtConfirm.Text)
{
MessageBox.Show("These passwords don't match! Please try again.", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
txtConfirm.Text = null;
return;
}
try
{
keyEncryp = Mahoa.EncryptPass(txtMessage.Text, txtPass.Text);
}
catch (Exception ex)
{
MessageBox.Show("Short passwords are easy to guess. Try one with at least 8 characters.", "Warring!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
bmp = LSB.MahoaLSB(keyEncryp, bmp);
MessageBox.Show("Your text was hidden in the image successfully!", "Done");
#region
SaveFileDialog saveFile = new SaveFileDialog();
saveFile.Filter = "Png Image|*.png|Jpg Imgae|*.jpg|Bitmap Image|*.bmp";
//saveFile.InitialDirectory = @"C:\User\metech\Desktop";
if (saveFile.ShowDialog() == DialogResult.OK)
{
switch (saveFile.FilterIndex)
{
case 1:
{
bmp.Save(saveFile.FileName, ImageFormat.Png);
break;
}
case 2:
{
bmp.Save(saveFile.FileName, ImageFormat.Jpeg);
break;
}
case 3: {
bmp.Save(saveFile.FileName, ImageFormat.Bmp);
break;
}
}
NoteLable.Text = " Save image successfully!! [Nguyen Thanh Nam , N14DCAT094]";
NoteLable.ForeColor = Color.Yellow;
#endregion
}
}
