private void btnEncrypt_Click(object sender, EventArgs e)
{
if (pbImage.Image == null)
{
WarningNotice.NoImage();
return;
}
if (tbPassword.Text.Length != 16 && tbPassword.Text.Length != 24 && tbPassword.Text.Length != 32)
{
WarningNotice.KeyLength(16, 24, 32);
return;
}
if (tbIV.Text.Length != 16)
{
WarningNotice.IVLength(16);
return;
}
Bitmap bitmap = (Bitmap)pbImage.Image;
Bitmap result;
if (sfdFile.ShowDialog() == DialogResult.OK)
{
string fileName = sfdFile.FileName;
Task.Factory.StartNew(() =>
{
try
{
string hiddenText = AESEncryption.Encrypt(tbFromText.Text, tbPassword.Text, tbIV.Text);
ControlEnable(this.Controls, false);
fileSize = bitmap.Height;
result = SteganographyConvert.Encrypt(hiddenText, (Bitmap)bitmap.Clone());
switch (sfdFile.FilterIndex)
{
case 0: result.Save(fileName, ImageFormat.Png); break;
case 1: result.Save(fileName, ImageFormat.Bmp); break;
case 2: result.Save(fileName, ImageFormat.Jpeg); break;
}
this.Invoke(new Action(() => WarningNotice.Save()));
}
catch (SteganographySizeException ex)
{
this.Invoke(new Action(() => WarningNotice.CantConvertImage()));
}
finally
{
ControlEnable(this.Controls, true);
}
});
}
sfdFile.FileName = "";
}
private void btnDecrypt_Click(object sender, EventArgs e)
{
if (pbImage.Image == null)
{
WarningNotice.NoImage();
return;
}
if (tbPassword.Text.Length != 16 && tbPassword.Text.Length != 24 && tbPassword.Text.Length != 32)
{
WarningNotice.KeyLength(16, 24, 32);
return;
}
if (tbIV.Text.Length != 16)
{
WarningNotice.IVLength(16);
return;
}
Bitmap bitmap = (Bitmap)pbImage.Image;
Task.Factory.StartNew(() =>
{
ControlEnable(this.Controls, false);
fileSize = bitmap.Height;
string hiddenText = SteganographyConvert.Decrypt(bitmap);
this.Invoke(new Action(() =>
{
try
{
tbToText.Text = AESEncryption.Decrypt(hiddenText, tbPassword.Text, tbIV.Text);
WarningNotice.Completed();
}
catch (Exception)
{
this.Invoke(new Action(() => WarningNotice.WrongKey()));
}
}));
ControlEnable(this.Controls, true);
});
}
