APDU reading mart card serial number PROBLEM !!!!!!!!

Question

Hi.
I want to read serial number from smart card with help of OCF and reader.
But I can not find solution?
The next piece o code returns:
sw1 = 6d +>>>>>>>> Card does not support instruction class+
sw2 = 00
data = null
import opencard.core.event.CTListener;
import opencard.core.event.CardTerminalEvent;
import opencard.core.event.EventGenerator;
import opencard.core.service.SmartCard;
import opencard.core.terminal.CardTerminal;
import opencard.core.terminal.CommandAPDU;
import opencard.core.terminal.ResponseAPDU;
import opencard.opt.util.PassThruCardService;
public class Listener implements CTListener {
     private SmartCard smartcard = null;
     private CardTerminal terminal = null;
     private int slotID = 0;
     public void register() {
          EventGenerator.getGenerator().addCTListener(this);
          try {
               EventGenerator.getGenerator().createEventsForPresentCards(this);
          } catch (Exception e) {
               e.printStackTrace(System.err);
               unregister();
     public void unregister()
          EventGenerator.getGenerator().removeCTListener(this);
     public void cardInserted(CardTerminalEvent event) {
          try {
               smartcard = SmartCard.getSmartCard(event);
               PassThruCardService ptcs = (PassThruCardService) smartcard
                         .getCardService(PassThruCardService.class, true);
               PassThruCardService ptcs = (PassThruCardService) smartcard
                         .getCardService(PassThruCardService.class, true);
               CommandAPDU  apdu = new CommandAPDU(0x0045);
               ResponseAPDU res = ptcs.sendCommandAPDU(apdu);
               System.out.print(apdu.toString() + res.toString());
               System.out.printf("sw1 = %02x\n", res.sw1());
               System.out.printf("sw2 = %02x\n", res.sw2());
               System.out.println("data = " + res.data());
               terminal = event.getCardTerminal();
               slotID = event.getSlotID();
          } catch (Exception e) {
               e.printStackTrace();
     public void cardRemoved(CardTerminalEvent event) {
}Can anybody help me?
Thank in advance

Answer 1

Sebastien_Lorquet wrote:
6D00 is not "bad CLA" but "bad INS".
80 and 00 are ok for get data, the only difference is the presence of TLV encapsulation for 80 and not for 00 (AFAIR)This was to see if there was an interindestry standard GET DATA along with the proprietary GP GET DATA. Some cards may support a specific instruction with one CLA and not the other.
As far as developing a client application without developing a card applet, it all depends on the card. For instance you can get a card that already supports the IOS7816 file system operations without writing any code, while other cards are blank and require to write all code before you can do anything with it.
Cheers,
Shane
Edited by: safarmer on 3/11/2009 19:25