private void LoadProgramButton_Click(object sender, RoutedEventArgs e)
{
var dialog = new OpenFileDialog();
if (dialog.ShowDialog() == true)
{
try
{
this.firmware = new MspFirmware(dialog.FileName);
this.UpdateFirmwareSource(this.firmware);
this.bytesToSend = MspBoot.EncodeProgram(this.firmware);
this.loadedFileName.Text = $"{dialog.FileName} ({this.bytesToSend.Length} bytes)";
Console.WriteLine($"Sending: {this.bytesToSend.ToByteString("0x", ",")} Length = {this.bytesToSend.Length}");
this.sendDataAllButton.IsEnabled = (this.bytesToSend != null && this.isConnected);
this.sendDataAllButton100.IsEnabled = (this.bytesToSend != null && this.isConnected);
this.UpdateEncryptedDataTextBox();
this.UpdateEnryptedKey();
}
catch (Exception ex)
{
BasicMessageBox.Show($"{ex.Message}\n{ex.StackTrace}", "Failed to load program");
}
}
}
/// Helper function for generating session data for a specific tag
private byte[] GetSessionData(Tag tag, bool isObserver)
{
var payload = MspBoot.EncodeProgram(this.config.Firmware);
var signature = GenerateSignature(this.config.SessionKey, payload, tag.Version, this.config.TargetVersion);
var observerFlag = isObserver ? (byte)0x01 : (byte)0x00;
return(Native.TinyCrypt.AesEncrypt_DefaultIV(tag.DeviceKey, this.config.SessionKey)
.Concat(signature)
.Concat(new byte[] { this.config.TargetVersion, 0, 0, observerFlag })
.ToArray());
}
/// Attempts to send the encrypted firmware encoded as MSPBoot commands to the target tag
private async Task <bool> SendEncryptedFirmware(ushort tag)
{
var bytes = MspBoot.EncodeProgram(this.config.Firmware);
this.progress.Info($"Sending payload to {tag:X04}");
var response = await SendData(this.reader, tag, bytes, this.config.SessionKey, (byte)this.config.BlockSize, this.progress);
if (!response.IsSuccess())
{
this.progress.Error($"Failed to send data: {response.status}.", tag);
return(false);
}
return(true);
}
