public void Encode_and_decode_text_to_bitmap()
{
var text = "Some text that i want to pass through";
var bitmap = new Bitmap(50, 50);
LSB.Encode(bitmap, text);
var decoded = LSB.Decode(bitmap);
Assert.AreEqual(text, decoded);
}
public void All_together_now()
{
var text = "Some text that i want to pass through";
var key = Guid.NewGuid();
var bitmap = new Bitmap(50, 50);
var encrypted = Crypter.Encrypt(text, key);
LSB.Encode(bitmap, encrypted);
var decoded = LSB.Decode(bitmap);
var decrypted = Crypter.Decrypt(decoded, key);
Assert.AreEqual(text, decrypted);
}
public virtual void OnView()
{
var pixels = this.Texture2D.GetPixels32();
LSB.Decode(pixels,
(code, data) => {
if (code == LSB.Code.Error)
{
Debug.LogError("Could not decode message!");
return;
}
var message = System.Text.Encoding.UTF8.GetString(data);
int index = -1;
for (int i = 0; i < message.Length; ++i)
{
// sanity check of when transmission
// fails (don't know why don't care)
if (message[i] == ']')
{
if ((i + 1) < message.Length)
{
if (message[i + 1] == '|' && message[i + 2] == '[')
{
index = i;
break;
}
}
else
{
index = -1;
}
}
}
if (index == -1)
{
return;
}
message = message.Substring(0, index);
Dialog.Show(message);
});
}
private void Decrypt(object sender, RoutedEventArgs routedEventArgs)
{
if (string.IsNullOrWhiteSpace(KeyInput.Text))
{
TextInput.Text = LSB.Decode(bitmap);
StatusLabel.Content = "Decrypted without key";
}
else if (Guid.TryParse(KeyInput.Text.Trim(), out var guid))
{
var text = LSB.Decode(bitmap);
TextInput.Text = Crypter.Decrypt(text, guid);
StatusLabel.Content = "Decrypted with given key";
}
else
{
StatusLabel.Content = "Invalid key";
}
}
