Java Card Manager NetBeans plug-in

Just to announce, I've uploaded a simple plug-in for NetBeans that provides basic functionality for Java Cards. Send APDU commands to card or simulator, browse content loaded on card, load & install & delete applets, open secure channel... Plug-in follows Open platform specification.
It has been used with GemXpresso cards (and works well) so there is no experience with other cards, but suppose that the card is OP compliant, it should work ok.
I have some ideas to improve and to extend it to support full OP/GP specs as well as plug-in for Java Card project type. However, I have no idea about what Sun prepares as tools with JC3.0 (I've noticed that it will be NB plug-ins too).
http://plugins.netbeans.org/PluginPortal/faces/PluginDetailPage.jsp?pluginid=10935

Hello, neinaggar1.
Well, on NetBeans plug-in portal, I've uploaded Java Card Manager plug-in. This plug-in brings to NetBeans the possibility to communicate (APDU commands, installing applets, etc.) with card or running simulator; no project types.
In comments on plug-in discussion, i.e. http://plugins.netbeans.org/PluginPortal/faces/PluginDetailPage.jsp?pluginid=10935 , I've put a link to second plug-in Java Card Project that provides the "project" functionality - new project type (new project type category "Java Card"), code completion, compiling, converting, starting simulator... However, this plug-in is in "beta" stage because it has some unsolved pitfalls - for example, you can provide just one export path for converting and there is a problem with plug-in depedency to internal NetBeans modules so it is strongly dependent on certain ide version (and probably even on its build).
Check the link above and discussion present there.
Just a note:
the access to the functionality Java Card Manager plug-in is from "Service" tab.
the access to the functionality Java Card Project plug-in is from properties (right click on the project name in project treeview) of existing java card project made by this plug-in or via new project wizard to make a new java card project.
Edited by: Vlasakcz on Aug 1, 2008 7:24 AM

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http://netbeans.org/bugzilla/show_bug.cgi?id=189823
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Mehmet wrote:
Hello Rohit,
If you download the Java Card Development Kit (http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javame-419430.html#java_card_kit-2.2.1-oth-JPR)
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https://minotaur.fi.muni.cz:8443/~xsvenda/docuwiki/doku.php?id=public:smartcard:javacardcompilation
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MehmetI already have , Netbeans 7.1 and now i have gpshell 1.4.4 ,i think netbeans is capable to making .cap file, did you mean that with use of gpshell i can connect with java card through reader? gp shell would work stand alone or we need to set this to netbeans? i read the link which u passed to me, it seems very good but "it seems very tough to implement" . HELL IS WAITING FOR ME... KIDDING DEAR,
one last thing, anything other than net beans { here we create applet and it automatically create cap file} and gp shell are require to load applet onto the card? OR these is enough to implement wholo java card application- I asked this because i get the term JCOP and etc when i read uploading applet to card.
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sorry, i'm not answering your question..
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Java Card Memory Managament: How do you free-up allocated memory?

I have a problem with java card memory management, that causes the applet to hang. I think the java card runs out of RAM when my applet runs for several iterations or process() calls. My program requires significant size of bytes for each APDU command to be sent. (around 100-250 bytes, for each apdu.sendBytes() call).
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I suspect, that when tmpBuff is reinitialized before each process() call, the Java Card garbage collector does now free-up the memory that was used for the previous tmpBuff byte array initialization.
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Cenon,
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Edited by: safarmer on Jul 8, 2008 12:25 PM

How to ensure applet is written in java card?

Hi all,
I have written a java card applet, in which i am using the Biometry API of java card to enroll a fingerprint template in java card. Code is attached below:
package classicapplet1;
import javacard.framework.*;
import javacardx.biometry.BioBuilder;
import javacardx.biometry.OwnerBioTemplate;
import javacardx.biometry.SharedBioTemplate;
import javacardx.biometry.BioException;
public class JavaBiometrics extends Applet implements SharedBioTemplate{
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     public final static byte INS_ENROLL = (byte)0x10;
     public final static byte MATCH_TRY_LIMIT = (byte)3;
     public final static byte INVALID_DATA = (byte)0x77;
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     public static final byte CARD_ENROL_FAILED = (byte)0x6900;
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     * Installs this applet.
     * @param bArray
     *            the array containing installation parameters
     * @param bOffset
     *            the starting offset in bArray
     * @param bLength
     *            the length in bytes of the parameter data in bArray
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public boolean select()
return true;
     * Processes an incoming APDU.
     * @see APDU
     * @param apdu
     *            the incoming APDU
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        //get the incoming APDU buffer
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     buffer[ISO7816.OFFSET_CLA] = (byte)(buffer[ISO7816.OFFSET_CLA] & (byte)0xFC);
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     if(buffer[ISO7816.OFFSET_CLA] == 0 && buffer[ISO7816.OFFSET_INS] == (byte)(0xA4))
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          ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
     switch(buffer[ISO7816.OFFSET_INS])
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          enroll(apdu);
          break;
     default:
          ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
public void enroll(APDU apdu)
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        short bytesRead = apdu.setIncomingAndReceive();
        bio_temp.init(buffer, ISO7816.OFFSET_CDATA, bytesRead);
        bio_temp.doFinal();
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        return this;
///////////// These methods implemets the ShareableBio interface///////////////
public boolean isInitialized() {
        return bio_temp.isInitialized();
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        return bio_temp.isValidated();
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        bio_temp.reset();
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        return bio_temp.getTriesRemaining();
    public byte getBioType() {
        return bio_temp.getBioType();
    public short getVersion(byte[] dest, short offset) {
        return bio_temp.getVersion(dest, offset);
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            throws BioException {
        return bio_temp.getPublicTemplateData(publicOffset, dest, destOffset, length);
    public short initMatch(byte[] candidate, short offset, short length) throws BioException {
        return bio_temp.initMatch(candidate, offset, length);
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Problem :
I have developed this program in Netbeans using java card plug ins. when i am running this program, all the required CAP files and EXP files are generated.
Now, i have to write this applet on java card through a card reader. My card reader is installed in an embedded system GeoAmida with IP 192.133.133.2 and port number 6789.
I have used the following settings for my java card device in Netbeans:
Host : 192.133.133.2
Server URL: http://192.133.133.2:6789/
Card Manager URL: http://192.133.133.2:6789/cardmanager/
HTTP port: 6789
The output shows me that Instances of this program has been successfully has been created on java card.
But the problem is how can i ensure that my applet is been successfully installed on the java card?
The code of host application program, accessing the developed java card applet is given below (it is written in C):
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <smartcard.h>
int main()
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     unsigned char applet_id[100], apdu_len, apdu[300],response[300]={0};
     smartcard_info *context;
     smartcard=CONTACTLESS;
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     if((context = smartcard_init(smartcard)) == NULL){
          printf("Smartcard Initi. Failed\n");
          return 0xBB;
     /* checking for smartcard */
     while (1){
          if(ret=smartcard_is_present(context, smartcard)!=0)
               sleep(1);
          else
               break;
     printf("Selecting Applet \n");
     i = 0;
     applet_id[i++]=0x00; applet_id[i++]=0xA4; applet_id[i++]=0x04; applet_id[i++]=0x00; applet_id[i++]=0x06;
     applet_id[i++]=0xA9; applet_id[i++]=0xBF; applet_id[i++]=0xA2; applet_id[i++]=0xB6; applet_id[i++]=0xB1; applet_id[i++]=0x3E; applet_id[i++]=0x7F;
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          printf("select applet failed %02x\n",ret);
          return ;
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#if 1
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     apdu[i++]=0xCF; apdu[i++]=0x10; apdu[i++]=0x04; apdu[i++]=0x04; apdu[i++]=0x7F;
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     apdu_len = i;
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          //return;
     }else
          printf("APDU Success\n");
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#endif
     smartcard_deinit(context);
     return 0;
}The output of this program is showing me that applet is been successfully selected, but APDU selection failed. Please solve this problem as soon as possible, because my project is deadline is not very much far.
Thanks in advance.
Mukul Gupta

Hi Shane,
I am getting error 6a86 which means that value of P1 is less than 1 or more than 8, and we have to change its value to any in between 1 to 8. I did that also but error still remains :(
Please tell me what is reason behind this error. And, i'll try out your previous solution today, Thanks for it.

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