private void btnReadBlock_Clicked(System.Object sender, System.EventArgs e)
{
byte[] cardKey = new byte[] { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
byte[] encryptedResult = nfcService.ReadByteBlock(16, cardKey, NfcKeyType.KeyB);
byte[] result = encryptionService.Decrypt(encryptedResult);
Device.BeginInvokeOnMainThread(() => lbState.Text = result == null ? "Error reading NFC block" : $"NFC block read {BitConverter.ToString(result)}");
}
private string ReadBlock(int block)
{
byte[] cardKey = new byte[] { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
byte[] encryptedResult = nfcService.ReadByteBlock(block, cardKey, NfcKeyType.KeyB);
byte[] result = encryptionService.Decrypt(encryptedResult);
if (result == null)
{
DisplayAlert("Error", "Error reading", "Ok");
return(null);
}
return(Encoding.Default.GetString(result));
}
