public override byte[] GetKey(KeyProviderQueryContext ctx)
{
byte[] key = null;
try
{
KeePassRFIDConfig rfidConfig = KeePassRFIDConfig.GetFromCurrentSession();
ChipAction(new Action <Chip>(delegate(Chip chip)
{
if (rfidConfig.KeyType == KeyType.NFC)
{
// Only tag type 4 supported for now.
NFCTagCardService nfcsvc = chip.getService(CardServiceType.CST_NFC_TAG) as NFCTagCardService;
if (nfcsvc == null)
{
throw new KeePassRFIDException(Properties.Resources.UnsupportedNFCTag);
}
NdefMessage msg = nfcsvc.readNDEF();
if (msg.getRecordCount() > 0)
{
NdefRecordCollection records = msg.getRecords();
if (records.Count > 0)
{
// Always use first record only
NdefRecord record = records[0];
// Don't care about payload type, use whole payload as the key
UCharCollection payload = record.getPayload();
if (payload.Count > 0)
{
key = payload.ToArray();
}
}
}
}
else
{
UCharCollection csn = chip.getChipIdentifier();
if (csn.Count > 0)
{
key = csn.ToArray();
}
}
}), rfidConfig);
}
catch (KeePassRFIDException ex)
{
MessageBox.Show(ex.Message, Properties.Resources.PluginError, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(key);
}