Code Sample: cardinfo for JCOP41V22 Card

Question

Listed below is the code sample, cardinfo.java, deduced from loader.java for JCOP41V22 card:
import java.io.*;
import com.ibm.jc.*;
import com.ibm.jc.terminal.*;
* Sample cardinfo. Demonstrates how to use the offcard API to list applets informatoin,
* JCOP41V22 by shrinking the loader.java code.
* Modified by: freiheit / 13/10/2005
public class cardinfo{
     protected static final byte[] JCOP_CARD_MANAGER_AID = { (byte) 0xa0, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00};
     protected static final byte defaultInstallParam[] = { -55, 0 }; // don't know what it's for
     public static void main(String[] args){
     if (args.length == 0){
     System.out.println("cardinfo.main(): missing cap-file argument");
     System.exit(1);
     try{
     cardinfo l = new cardinfo();
     //l.load(args[0]);
     l.getcardinfo();
     }catch(Exception e){
     System.err.println("EX: msg " + e.getMessage() + ", class " + e.getClass());
     e.printStackTrace(System.err);
     System.exit(0);
private cardinfo(){}
//private void load(String capFileName) throws Exception{
private void getcardinfo() throws Exception{
     //CapFile capFile = new CapFile(capFileName, null);
/*CapFile capFile = new CapFile("C:\\Documents and Settings\\Seah Peng Chew\\workspace\\Helloworld\\bin\\com\\acme\\helloworld\\javacard\\helloworld.cap", null);
     System.out.println("Package name: " + capFile.pkg);
     byte[][] applets = capFile.aids;
     if ((applets == null) || (applets.length == 0)){
     throw new RuntimeException("no applets in cap file");
     // Get connection to terminal, we look for the simulation.
     // As you might want to use "pcsc", "4" or "tcl", "10" in case of
     // Windows or "PCSC", null in case of Linux, you should pass the name
     // of the terminal on the command line or in a properties file
     System.out.println("Open terminal ...");     
     //Make sure the simulator jcop.exe is activated before unmark this satement
     //before running
     //Issue /close command at "cm" prompt if the card is in use,, ie it should
     //have "-" prompt.
     JCTerminal term = JCTerminal.getInstance("Remote", null);
     //For real JCOP41V22 card, please unmark this statement before running
     //Issue /close command at "cm" prompt if the card is in use,, ie it should
     //have "-" prompt.
     //JCTerminal term = JCTerminal.getInstance("pcsc:4", null);
     term.open();
     term.waitForCard(5000);
     TraceJCTerminal _term = new TraceJCTerminal();
     _term.setLog(new PrintWriter(System.out));
     _term.init(term);
     term = _term;
     System.out.println("Get card ...");
     JCard card = new JCard(term, null, 2000);
     System.out.println("Select card manager ...");
     CardManager cardManager = new CardManager(card, CardManager.daid);     
     cardManager.select();
     byte[] dfltKey = c2b("404142434445464748494a4b4c4d4e4f");
     cardManager.setKey(new OPKey(255, 1, OPKey.DES_ECB, dfltKey));
     cardManager.setKey(new OPKey(255, 2, OPKey.DES_ECB, dfltKey));
     cardManager.setKey(new OPKey(255, 3, OPKey.DES_ECB, dfltKey));
     System.out.println("Authenticate to card manager ...");
     cardManager.initializeUpdate(255, 0, CardManager.SCP_UNDEFINED);
     cardManager.externalAuthenticate(OPApplet.APDU_CLR);
     cardManager.update();
     JCInfo info = JCInfo.INFO;
     System.out.println("\nCardManager AID : " + JCInfo.dataToString(cardManager.getAID()));
     System.out.println("CardManager state : " + info.toString("card.status", (byte) cardManager.getState()) + "\n");
     Object[] app = cardManager.getApplets(1, 0, true);
     if (app == null) {
     System.out.println("No applets installed on-card");
     } else {
     System.out.println("Applets:");
     for (int i = 0; i < app.length; i++) {
          System.out.println(info.toString("applet.status", (byte) ((OPApplet) app).getState()) + " " + JCInfo.dataToString(((OPApplet) app[i]).getAID()));
     Object[] lf = cardManager.getLoadFiles(0, true);
     if (lf == null) {
     System.out.println("No packages installed on-card");
     } else {
     System.out.println("Packages:");
     for (int i = 0; i < lf.length; i++) {
          System.out.println(info.toString("loadfile.status", (byte)((LoadFile) lf[i]).getState()) + " " + JCInfo.dataToString(((LoadFile) lf[i]).getAID()));
     term.close();
static String numbers = "0123456789abcdef";
private byte[] c2b(String s) {
     if (s == null) return null;
     if (s.length() % 2 != 0) throw new RuntimeException("invalid length");
     byte[] result = new byte[s.length() / 2];
     for (int i = 0; i < s.length(); i += 2) {
     int i1 = numbers.indexOf(s.charAt(i));
     if (i1 == -1) throw new RuntimeException("invalid number");
     int i2 = numbers.indexOf(s.charAt(i + 1));
     if (i2 == -1) throw new RuntimeException("invalid number");
     result[i / 2] = (byte) ((i1 << 4) | i2);
     return result;
I have tested the code with JCOP Plug-in 3.1.1a in Windows environment.
Please give your comments and feedback.

Answer 1

The posted code had some errors in the part which enumerate the installed applets and packages. I corrected that.
Second I changed the class name from "cardinfo" to "CardInfo", because of java code style.
import java.io.PrintWriter;
import com.ibm.jc.CardManager;
import com.ibm.jc.JCInfo;
import com.ibm.jc.JCTerminal;
import com.ibm.jc.JCard;
import com.ibm.jc.LoadFile;
import com.ibm.jc.OPApplet;
import com.ibm.jc.OPKey;
import com.ibm.jc.terminal.TraceJCTerminal;
* Sample cardinfo. Demonstrates how to use the offcard API to list applets informatoin, JCOP41V22
* by shrinking the loader.java code. Modified by: freiheit / 13/10/2005
public class CardInfo {
    protected static final byte[] JCOP_CARD_MANAGER_AID = { (byte) 0xa0, 0x00, 0x00, 0x00, 0x03,
            0x00, 0x00, 0x00 };
    protected static final byte defaultInstallParam[] = { -55, 0 }; // don't know what it's for
    public static void main(String[] args) {
         * if (args.length == 0){ System.out.println("cardinfo.main(): missing cap-file argument");
         * System.exit(1); }
        try {
            CardInfo l = new CardInfo();
            // l.load(args[0]);
            l.getcardinfo();
        } catch (Exception e) {
            System.err.println("EX: msg " + e.getMessage() + ", class " + e.getClass());
            e.printStackTrace(System.err);
        System.exit(0);
    private CardInfo() {
    // private void load(String capFileName) throws Exception{
    private void getcardinfo() throws Exception {
        // CapFile capFile = new CapFile(capFileName, null);
         * CapFile capFile = new CapFile("C:\\Documents and Settings\\Seah Peng
         * Chew\\workspace\\Helloworld\\bin\\com\\acme\\helloworld\\javacard\\helloworld.cap",
         * null); System.out.println("Package name: " + capFile.pkg); byte[][] applets =
         * capFile.aids; if ((applets == null) || (applets.length == 0)){ throw new
         * RuntimeException("no applets in cap file"); }
        // Get connection to terminal, we look for the simulation.
        // As you might want to use "pcsc", "4" or "tcl", "10" in case of
        // Windows or "PCSC", null in case of Linux, you should pass the name
        // of the terminal on the command line or in a properties file
        System.out.println("Open terminal ...");
        // Make sure the simulator jcop.exe is activated before unmark this satement
        // before running
        // Issue /close command at "cm" prompt if the card is in use,, ie it should
        // have "-" prompt.
        JCTerminal term = JCTerminal.getInstance("Remote", null);
        // For real JCOP41V22 card, please unmark this statement before running
        // Issue /close command at "cm" prompt if the card is in use,, ie it should
        // have "-" prompt.
        // JCTerminal term = JCTerminal.getInstance("pcsc:4", null);
        term.open();
        term.waitForCard(5000);
        TraceJCTerminal _term = new TraceJCTerminal();
        _term.setLog(new PrintWriter(System.out));
        _term.init(term);
        term = _term;
        System.out.println("Get card ...");
        JCard card = new JCard(term, null, 2000);
        System.out.println("Select card manager ...");
        CardManager cardManager = new CardManager(card, CardManager.daid);
        cardManager.select();
        byte[] dfltKey = c2b("404142434445464748494a4b4c4d4e4f");
        cardManager.setKey(new OPKey(255, 1, OPKey.DES_ECB, dfltKey));
        cardManager.setKey(new OPKey(255, 2, OPKey.DES_ECB, dfltKey));
        cardManager.setKey(new OPKey(255, 3, OPKey.DES_ECB, dfltKey));
        System.out.println("Authenticate to card manager ...");
        cardManager.initializeUpdate(255, 0, CardManager.SCP_UNDEFINED);
        cardManager.externalAuthenticate(OPApplet.APDU_CLR);
        cardManager.update();
        JCInfo info = JCInfo.INFO;
        System.out.println("\nCardManager AID : " + JCInfo.dataToString(cardManager.getAID()));
        System.out.println("CardManager state : "
                + info.toString("card.status", (byte) cardManager.getState()) + "\n");
        OPApplet[] app = (OPApplet[]) cardManager.getApplets(1, 0, true);
        if (app == null) {
            System.out.println("No applets installed on-card");
        } else {
            System.out.println("Applets:");
            for (int i = 0; i < app.length; i++) {
                System.out.println(info.toString("applet.status", (byte) app.getState()) + " "
+ JCInfo.dataToString(app[i].getAID()));
LoadFile[] lf = cardManager.getLoadFiles(0, true);
if (lf == null) {
System.out.println("No packages installed on-card");
} else {
System.out.println("Packages:");
for (int i = 0; i < lf.length; i++) {
System.out.println(info.toString("loadfile.status", (byte) lf[i].getState()) + " "
+ JCInfo.dataToString(lf[i].getAID()));
term.close();
static String numbers = "0123456789abcdef";
private byte[] c2b(String s) {
if (s == null)
return null;
if (s.length() % 2 != 0)
throw new RuntimeException("invalid length");
byte[] result = new byte[s.length() / 2];
for (int i = 0; i < s.length(); i += 2) {
int i1 = numbers.indexOf(s.charAt(i));
if (i1 == -1)
throw new RuntimeException("invalid number");
int i2 = numbers.indexOf(s.charAt(i + 1));
if (i2 == -1)
throw new RuntimeException("invalid number");
result[i / 2] = (byte) ((i1 << 4) | i2);
return result;