private void RefreshRequiredSize()
{
Trithemius t = new Trithemius(null);
t.LeastSignificantBits = (int)bitsNumericUpDown.Value;
try {
byte[] msg;
if (textRadioButton.Checked) {
if (message == null)
return;
msg = Encoding.UTF8.GetBytes(message);
}
else {
if (string.IsNullOrEmpty(msgOpenDialog.FileName))
return;
msg = File.ReadAllBytes(msgOpenDialog.FileName);
}
if (!string.IsNullOrEmpty(passwordBox.Text))
msg = AESThenHMAC.SimpleEncryptWithPassword(msg, passwordBox.Text);
int msgSize = t.GetRequiredSize(msg);
requiredSizeBox.Text = SizeToString(msgSize);
if (msgSize > maxSize) {
requiredSizeLabel.ForeColor = Color.Red;
}
else {
requiredSizeLabel.ForeColor = Color.Black;
}
}
catch (FileNotFoundException ex) {
ShowError(ex);
}
finally {
t.Dispose();
}
}
private Trithemius MakeTrithemius()
{
Trithemius t = new Trithemius(OpenBitmap(pathTextbox.Text));
t.Color = (PixelColor)(pixelValueComboBox.SelectedIndex + 1);
t.InvertBits = invertBox.Checked;
if (!string.IsNullOrEmpty(seedBox.Text)) {
t.Seed = new TrithemiusSeed(seedBox.Text);
}
t.LeastSignificantBits = (int)bitsNumericUpDown.Value;
return t;
}
