Wsrtjtyk

I am working on reading a smart card in Java. When I execute the following code below, the card returns 6985 (Conditions of use not satisfied) as a result.

  TerminalFactory factory = TerminalFactory.getDefault();

  List<CardTerminal> terminals = factory.terminals().list();

  System.out.println("Terminals: " + terminals);



  if (terminals != null && !terminals.isEmpty()) {

   // Use the first terminal

   CardTerminal terminal = terminals.get(0);



   // Connect with the card

   Card card = terminal.connect("*");

   System.out.println("card: " + card);

   CardChannel channel = card.getBasicChannel();



   CommandAPDU commandAPDU = new CommandAPDU(0x00, 0xA4, 0x00, 0x0C,

   new byte{0002},0,0x01);



   ResponseAPDU responseCheck = channel.transmit(commandApdu);

   System.out.println(responseCheck.getSW1()+":"+responseCheck.getSW2()+":"+

   commandApdu.toString());

The parameters provided by the client are:

• CLA = 00


• INS = A4


• P1 = 00


• P2 = 0C


• LC = 02


• Data = XXXX (The data passed here is File Identifier),As I want to select EF file so EFID for the file given by client is 0002

CommandAPDU commandAPDU = new CommandAPDU(0x00, 0xA4, 0x00, 0x0C, new byte{0002},0,0x01);

won't do what you expect it to do.

new byte{0002} will give you a byte array with one byte of value 2. Also, the ,0,0x01); (last two parameters) will make the constructor only pick that one byte from the DATA array. So your APDU will look like this:

+------+------+------+------+------+------+------+

| CLA  | INS  | P1   | P2   | Lc   | DATA | Le   |

| 0x00 | 0xA4 | 0x00 | 0x0C | 0x01 | 0x02 | ---  |

+------+------+------+------+------+------+------+

This is probably not what you expected. Did you want new byte{0, 2} instead? Using

CommandAPDU commandAPDU = new CommandAPDU(0x00, 0xA4, 0x00, 0x0C, new byte{0, 2}, 256)

would result in the following APDU (note that Le is present and set to 0 (Ne = 256); Lc is automatically infered from the size of the DATA array):

+------+------+------+------+------+-----------+------+

| CLA  | INS  | P1   | P2   | Lc   | DATA      | Le   |

| 0x00 | 0xA4 | 0x00 | 0x0C | 0x02 | 0x00 0x02 | 0x00 |

+------+------+------+------+------+-----------+------+

Or using

CommandAPDU commandAPDU = new CommandAPDU(0x00, 0xA4, 0x00, 0x0C, new byte{0, 2})

would result in the following APDU (note that Le is absent (Ne = 0); Lc is automatically infered from the size of the DATA array):

+------+------+------+------+------+-----------+------+

| CLA  | INS  | P1   | P2   | Lc   | DATA      | Le   |

| 0x00 | 0xA4 | 0x00 | 0x0C | 0x02 | 0x00 0x02 | ---  |

+------+------+------+------+------+-----------+------+