public byte[] NtagRead(byte startPage)
{
_data = Iso14443Part3PassThru(NTAG_READ, startPage);
switch (_data.Length)
{
case 1: // NAK
throw NakException.NtagNakException(_data[0]);
case 16: // PACK
return(_data);
default:
throw new SmartCardException("Response of unexpected length (" + _data.Length + ") returned");
}
}
public byte[] NtagFastRead(byte startPage, byte endPage)
{
_data = Iso14443Part3PassThru(NTAG_FAST_READ, startPage, endPage);
if (_data.Length == 4 * (endPage - startPage + 1))
{
return(_data);
}
else if (_data.Length == 1)
{
throw NakException.NtagNakException(_data[0]);
}
else
{
throw new SmartCardException("Response of unexpected length (" + _data.Length + ") returned");
}
}
public bool NtagPasswordAuth(byte[] password)
{
if (password.Length == 4)
{
_data = Iso14443Part3PassThru(NTAG_PWD_AUTH, password[0], password[1], password[2], password[3]);
switch (_data.Length)
{
case 0:
return(false); // Incorrect Password
case 1: // NAK
throw NakException.NtagNakException(_data[0]);
case 2: // PACK
return(true);
default:
throw new SmartCardException("Response of unexpected length (" + _data.Length + ") returned");
}
}
return(false);
}
public bool NtagWrite(byte page, byte[] data)
{
if (data.Length == 4)
{
_data = Iso14443Part3PassThru(NTAG_WRITE, page, data[0], data[1], data[2], data[3]);
switch (_data.Length)
{
case 1: // ACK or NAK
if (_data[0] == NTAG_ACK)
{
return(true);
}
else
{
throw NakException.NtagNakException(_data[0]);
}
default:
throw new SmartCardException("Response of unexpected length (" + _data.Length + ") returned");
}
}
throw new SmartCardException("Input data should be 4 bytes");
}
public string NtagGetVersion()
{
_data = Iso14443Part3PassThru(NTAG_GET_VERSION);
switch (_data.Length)
{
case 1: // NAK
throw NakException.NtagNakException(_data[0]);
case 8:
Debug.Assert(_data[0] == 0x00); // header
Debug.Assert(_data[1] == 0x04); // NXP Semiconductors
Debug.Assert(_data[2] == 0x04); // NTAG
Debug.Assert(_data[3] == 0x02); // product subtype
Debug.Assert(_data[4] == 0x01); // major version
Debug.Assert(_data[5] == 0x00); // minor version
Debug.Assert(_data[7] == 0x03); // protocol type
switch (_data[6])
{
case 0x0F:
return("NTAG213");
case 0x11:
return("NTAG215");
case 0x13:
return("NTAG216");
default:
return("NTAGXXX");
}
default:
throw new SmartCardException("Response of unexpected length (" + _data.Length + ") returned");
}
}
