命令APDU返回结果6985(不满足使用条件)

时间:2018-11-13 06:16:44

标签: java format smartcard apdu smartcardio

我正在用Java读取智能卡。当我在下面执行以下代码时,该卡将因此返回6985(不满足使用条件)。

  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());

客户端提供的参数是:

  • CLA = 00
  • INS = A4
  • P1 = 00
  • P2 = 0C
  • LC = 02
  • 数据= XXXX(此处传递的数据是文件标识符),由于我要选择EF文件,因此客户端给定文件的EFID为0002

1 个答案:

答案 0 :(得分:1)

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

不会按照您的预期去做。

new byte[]{0002}将为您提供一个字节数组,其中一个字节的值为2。此外,,0,0x01);(最后两个参数)将使构造函数仅从DATA数组中选取该字节。因此,您的APDU如下所示:

+------+------+------+------+------+------+------+
| CLA  | INS  | P1   | P2   | Lc   | DATA | Le   |
| 0x00 | 0xA4 | 0x00 | 0x0C | 0x01 | 0x02 | ---  |
+------+------+------+------+------+------+------+

这可能不是您所期望的。您要使用new byte[]{0, 2}吗?使用

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

将产生以下APDU(请注意,存在Le并将其设置为0(Ne = 256);从DATA数组的大小自动推断出Lc):

+------+------+------+------+------+-----------+------+
| CLA  | INS  | P1   | P2   | Lc   | DATA      | Le   |
| 0x00 | 0xA4 | 0x00 | 0x0C | 0x02 | 0x00 0x02 | 0x00 |
+------+------+------+------+------+-----------+------+

或使用

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

将产生以下APDU(请注意,Le不存在(Ne = 0;从DATA数组的大小自动推断出Lc):

+------+------+------+------+------+-----------+------+
| CLA  | INS  | P1   | P2   | Lc   | DATA      | Le   |
| 0x00 | 0xA4 | 0x00 | 0x0C | 0x02 | 0x00 0x02 | ---  |
+------+------+------+------+------+-----------+------+