Reg: java card application needs

Dear experts,
i am a newbie to java card, After a lot of googling, i found JACCAL to aid java card programming development. I have downloaded and installed it but i dont know how to use it? any help will be greatly appreciated,
By the way, i need to know why do we need IDE or tools for java card programming?. Cant we complete right from typing program to till burning on card using the java card kit ? please correct me, if i am wrong.
I have tested the sample programs successfully with java card kit 2.1.2. My doubt is, What are the needs for java card application, like what CAD, card and tools should be used or purchased(most of them ,i found from the web are outdated like JCOP, OCF).
Thanks in advance.
SRI.

you mean by again doing right click src then New-other-java card Applet.

Similar Messages

Why my JCOP do not create CAPs for my java card application?

I am using Eclipse 3.3.1.1 and JCOP tools3.1.2.
When I create Java card application or applet, it doesn't create cap files for me automatically. Why?
I used JCOP before, it always created new CAP files replacing the older ones when I saved the source code.
Does the version of Eclipse conflict with that of JCOP?
By the way I am using JDK 1.6 for my default lib.
Thanks!

Well it works. I tested it with your version.
- Check out if your project has the JCOP nature.
- Check via the Navigator view if the javacard folder is created, including the .exp and .cap file (you need to refresh the last folder)
- Check if your Eclipse project setting have automatic build enabled, otherwise you need to trigger the build automatically
- Try to refresh, clean and rebuild the project

Auto start Java Card application

Hello,
is it possible to start a Java Card application from the SIM card right after the mobile is switched on?
I talked to a guy from a SIM card manufacturer and he told me it's possible since the device checks on start if a Java Card application is present to display it in the phone's menu, but it's device dependant how it's done and if the application really will be started (which sounds kind of strange).
Can someone give me more details if it's possible to auto start a application and how it's done ( code snippet would be great ; )?
Thanks in advance,
teric

The first event after ME startup, which STK applet could catch is Terminal Profile.
So, in applet class constructor should be smthng like
ToolkitRegistry reg = ToolkitRegistry.getEntry();
reg.setEvent(EVENT_PROFILE_DOWNLOAD);
and applet will trigger on Terminal Profile arrival.

Java card application and applet

Hi
I' am developing a java card application which has three applets (1-ID, 2-Purse, 3-Library). I mean the same card should be use for personal ID, purse, and as library card. Using eclipse I first have to create a new project.
File-New-New project-java card project. Then in the package Explorer view right click src then New-other-java card Applet. My question is because my java card application has more than one applet how do I add the other two. Should I add the other two by clicking src again or just add them under the same source code belonging to the java card Applet created at the beginning.

you mean by again doing right click src then New-other-java card Applet.

Beginner's Question on simulation of java card application

Hi,
I am trying to run a basic Java card application.
To simulate the java card application, I created jcwde.app and tried C:\>jcwde -p 9025 jcwde.app
I got and exception like:
Exception in thread "main" java.lang.UnsatisfiedLinkError: markHeap
at com.sun.javacard.impl.NativeMethods.markHeap(Native Method)
at javacard.framework.Dispatcher.cardInit(Dispatcher.java:188)
at javacard.framework.Dispatcher.main(Dispatcher.java:63)
at javacard.framework.JCWDEDispatcher.main(JCWDEDispatcher.java:28)
at com.sun.javacard.jcwde.Main.run(Main.java:85)
at com.sun.javacard.jcwde.Main.main(Main.java:148)
Can anyone help me to find out the reason for this exception?
The content of jcwde.app is
// applet AID
com.sun.javacard.installer.InstallerApplet 0xa0:0x0:0x0:0x0:0x62:0x3:0x1:0x8:0x1
wallet.Wallet
Thanx in advance.
anju

I see terms like ...
Core Java: The main libraries.
JDK: (J)ava (D)evelopement (K)it) - AKA: (S)oftware (D)evelopement (K)it although the terms are not exactly synonomous
J2EE:(J)ava 2 (E)nterprise (E)dition (builds on the J2SE with additional librarities for true business application building)
J2SE: (J)ava 2 (S)tandard (E)dition (The core libraries for general Java program developement, w/o the extra stuff that is in the J2EE
Go to java.sun.com and check out the tutorials, the readme files that come with the downloads, the release notes, etc ... HTH

Is it possible to simulate whole java card application on simulator?

Hello all,
currently i dont have any real java card yet,not either reader . I already made a simple applet and check its working by CJCRE (net beans simulator), it is working fine,
now i want to move to host application which will communicate with java card via card reader. Is this possible to simulate complete application ( host application + java card applets)?
I want to check it out that:- which line of java program would be helpful to know that:-
1-"how real host application will talk to reader"
2- how it connect and disconnect the reader
3- how it send apdu to java card by reader
and much more.
I am using netbeans 7.1 and it is using CJCRE as a simulator....

you mean to say this
http://askra.de/software/jcdocs/app-notes-2.2.2/apduio.html
I am quite confused now, i read this but still can not imagine the concept ,
an applet code is :-
public class GetName extends Applet
     final static byte CLASS     = (byte) 0x80; // Class of the APDU commands
     final static byte INS_READ = (byte) 0x02; // instruction for the READ APDU command
     final static byte INS_WRITE = (byte) 0x03; // instruction for the READ APDU command
     final static byte INS_DY_CO = (byte) 0x04; // instruction for the READ APDU command
     final static byte[] text    = {(byte) 'A', (byte) 'M', (byte) 'I', (byte) 'T'};
     public static byte[] holder;
     public static void install(byte[] bArray, short bOffset, byte bLength)
        new GetName();
    protected GetName()
        holder = new byte[5];// allocation of memory in runtime
        register();
    public void process(APDU apdu)
          if(selectingApplet())
               return;
        byte[] cmd_apdu = apdu.getBuffer();
         if (cmd_apdu[ISO7816.OFFSET_CLA] == CLASS)
               switch(cmd_apdu[ISO7816.OFFSET_INS])
                    case INS_READ:
                    if ((cmd_apdu[ISO7816.OFFSET_P1] != 0) || (cmd_apdu[ISO7816.OFFSET_P2] != 0))
                    ISOException.throwIt(ISO7816.SW_WRONG_P1P2);
                    short le = (short)(cmd_apdu[ISO7816.OFFSET_LC] & 0x00FF);
                    short len_text = (short)text.length;
                    if (le != len_text)
                    ISOException.throwIt((short)(ISO7816.SW_CORRECT_LENGTH_00 + len_text));
                    apdu.setOutgoing();
                    apdu.setOutgoingLength((short)len_text);
                    apdu.sendBytesLong(text, (short)0, (short)len_text);
                    break;
                // here we save data from apdu and will keep inside the data byte
                    case INS_WRITE:
                short lc = (short)(cmd_apdu[ISO7816.OFFSET_LC] & 0x00FF);
                Util.arrayCopy(cmd_apdu, (short) ((ISO7816.OFFSET_CDATA) & 0xff), holder, (short) 0, lc);
                    short len_holder_inside_write= (short) holder.length;
                   apdu.setOutgoing();
                apdu.setOutgoingLength((short)len_holder_inside_write);
                apdu.sendBytesLong(holder, (short) 0, (short) len_holder_inside_write);
                break;
                case INS_DY_CO:
                    short len_holder= (short) holder.length;
                apdu.setOutgoing();
                apdu.setOutgoingLength((short)len_holder);
                apdu.sendBytesLong(holder, (short) 0, (short) len_holder);
                break;
                    default :
                    ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
         else
                ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
}now i think i need to make a another java file which would contain a main class, Is this both file would be inside a single java card project. and how these both would be connect to each other.
for manually run a applet- there were two steps 1-
C:\java_card_kit-2_2\samples\src\demo>jcwde jcwde-getname.app
Java Card 2.2 Workstation Development Environment (version 0.18).
Copyright 2002 Sun Microsystems, Inc. All rights reserved.
jcwde is listening for T=0 Apdu's on TCP/IP port 9,025.
and in second terminal we wrote-
C:\java_card_kit-2_2\samples\src\demo>apdutool -nobanner -noatr getname.scr > ge
tname.scr.jcwde.out
Here it is clear that, if i will use javacardio then no need to pass the apdu from a file .....but i am confuse about how it possible, ie. is both file lie in same project , because i m using simulator so i need to run these both file simoltaneously........give me some roughly steps to implement this.

Can we test java card application on 2 simulators simultaneously?

to create a java card applet we also need to write card reader code to select that applet from card.but can we test it using simulators.how can 2 simulators (1 for card applet and other for reader) run simultaneously?

Hi,
to create a java card applet we also need to write card reader code to select that applet from card.but can we test it using simulators.how can 2 simulators (1 for card applet and other for reader) run simultaneously?Do you intend to have both simulators talking to each other or is the intent to code a host application that communicates with both cards at the same time?
If you are using CREF, you can start the second instance on a different port. You would then configure your host application to look for cards on both ports.
Cheers,
Shane

Writing Java Card Application

Please I am doing my final year project on secure mobile application using Java Card Technology.
I need to write and an application that can send SMS on a SIM card to another SIM card with the same application. The application will have a server side which manage the storage of messages and at the same time communicate information to the client on the SIM remotely. I am suppose to use wi-fi (TCP/IP) for transmission.
Can anybody please give me ideas and possible working codes and simulators.
I mean step by step procedure of how to start.
THANK YOU.

Dear Friend,
I would recomend you to start with learning 3GPP TS 43.019. Please surf the internet and download it. There you can also find a sample applet using SIM API.
For a simulator you can download JavaCard Development Suite from Gemalto web site.
Yours
Dmitri

Step by step approach to develope the java card application

Do anybody know how to develope a smart card application using java card.i have downloaded java card kit,but the documentation provided by the sun is bit complex to use.
so please anybody know how to proceed?
It would be appreciated if i am given a step by step approach to develope a smart card application using java card.

Do anybody know how to develope a smart card
application using java card.i have downloaded java
card kit,but the documentation provided by the sun is
bit complex to use.
so please anybody know how to proceed?I would suggest to read these articles
http://developers.sun.com/techtopics/mobility/javacard/articles/
Jan

Need suggestion regarding simulation of Java Card using a floppy

Hi All,
I am working on a project wherein I have to simulate a Java Card application using a floppy. I am writing my own Card Terminal and CardTerminalFactory. Thats what I have started working on. Will that serve the purpose or do I have to think about some other approach like just overriding the cardInserted method of CTListener class? I want to achieve communication between the host application and the floppy(which is my java card) Please advise.
I would like to thank DurangoVa and Nilesh for helping me out sorting out the error in running the converter.
Thanks in advance

Are you referring to a Floppy diskette drive ?

Basic Java Card/Card reader application question...

Hello all,
I have a basic question regarding java card applications. Do you always require a host application(on some PC/workstation server) to send and receive data from the java card (through the card reader using any of the available interfaces like OCF etc) or can you have a stand alone card reader application that interacts with java cards inserted into the reader?
For example..in a mass transit application, you have a reader that reads an e-purse smart card that is swiped and does the necessary deduction of the fare from the card. In this case, where does the host application reside (there is no other host system involved other than the reader here? ) How is this done? Does the card reader carry the necessary code to interact with cards?
Any information is greatly appreciated.
Thanks for the time.
Regards,
Ajay

Documentation is provided by the terminal vendors. Just think of it like this, there are drivers that read the card, but don't know what to do with the data without some form of middleware to process it.

Java card confusing Issues!!!!!!! java card architecture, advantage!!!!!

QUESTION -1
As I know about architecture of any application is -
                //normal java software                          java card                                  java card
                  // 1                                               2                                      3
1-            application program                        host application                           host application
2-                     JVM                                   Applets                                       Applets
3-              operating system                JCRE(which contain all classes, JVM ....)                 JCRE(act as a O.S too)
4                    hardware                              Operating system                                 H/W
5                                                                        hardwareWhat do u think- case 2 is right? or 3 is!!!!!!!!!!!
I think - case 3 is right!!!!
As i study from several sources , JCRE is complete package - it behaves as a operation system and use the functionality of component it contain. I also think if i will purchase a java card from any vendor , it would have JCRE inside it (means everthing inside it,), i only need to develop the applet according to my requirement and install it by on card installer program
QUESTION 2- what is the advantage of java card.?
// I think.
as i read out , i got the line that it is platform independent and support multiple application. applicaton point of
view , I am agree but how it is platfrom independent. if we use java card for smart card development, then
i will purchase Java card from differnt vendor , all will provide me card with supported jcre inside it, so why
this is advantage here?
// in case of window based application , it really make sense because if i will make any window application with java
// i can run it in windows , linux , unix and most of os flavours, here i can see the beauty of java language.
Clear me this and add some other java card advantages, which make java card goodquestion 3-
Now I am capaple to make simple applets, so I want to check the entire java card process atleast once before
going in deep of something, I am thinking to implement prepaid card concept , i made it applet for it ,it will
contain a page with 2 text box ( 1- for recharge 2- for money deduction ) and two button , with button click i
want to select the applet and want to pass the apdu.
( a) how i can make host window application ? (i think awt will work for me? , *
i never make any java window application yet) *
( b) still i dont have any java card , i want to make it by using simulator, is it possible?
(c) in this scenario what framework i need to study Ex. Import javacard.framework.* for making
applet or from where i need to start.Regards:
rohit pathak
Edited by: rohit pathak on Feb 9, 2012 10:10 PM

Hi,
QUESTION -1
As I know about architecture of any application is -
//normal java software                          java card                                  java card
// 1                                               2                                      3
1-            application program                        host application                           host application
2-                     JVM                                   Applets                                       Applets
3-              operating system                JCRE(which contain all classes, JVM ....)                 JCRE(act as a O.S too)
4                    hardware                              Operating system                                 H/W
5                                                                        hardwareWhat do u think- case 2 is right? or 3 is!!!!!!!!!!! If you are using Java Card then JCRE+JVM = OS and if you put this on ein package 3 then 3 is correct according to me.
As i study from several sources , JCRE is complete package - it behaves as a operation system and use the functionality of component it contain. I also think if i will purchase a java card from any vendor , it would have JCRE inside it (means everthing inside it,), i only need to develop the applet according to my requirement and install it by on card installer program Actually it depends. There can be following models in this regards:
1. Buy a empty smart card, Install your own OS and then write your applets for it.
2. As you said, Buy a card with preloaded OS and then write applets for it.
QUESTION 2- what is the advantage of java card.?
* Interoperable: Applets developed with Java Card technology will run on any Java Card technology-enabled smart card, independently of the card vendor and underlying hardware.
* Secure: Java Card technology relies on the inherent security of the Java programming language to provide a secure execution environment. Designed through an open process, the platform's proven industry deployments and security evaluations ensure that card issuers benefit from the most capable and secure technology available today.
* Multi-Application-Capable: Java Card technology enables multiple applications to co-exist securely on a single smart card.
* Dynamic: New applications can be installed securely after a card has been issued, enabling card issuers to respond to their customer's changing needs dynamically.
* Compatible with Existing Standards: The Java Card API is compatible with international standards for smart cards such as ISO7816, or EMV. Major industry-specific standards such as Global Platform and ETSI refer to it.
* Developers creating Java Card applications enjoy all the advantages of working in the Java programming language:
Object-oriented programming yields greater code modularity and reusability, leading to higher programmer productivity.
Protection features characteristic of the Java programming language apply to Java Card applets, enforcing strong typing and protection attributes.
Powerful off-the-shelf development tools are readily available.
source: http://java.sun.com/javacard/overview.jsp
And also, in case of SIM card if you are using java card then RAM is possible and native cards don't have this ability.
question 3
Now I am capaple to make simple applets, so I want to check the entire java card process atleast once before
going in deep of something, I am thinking to implement prepaid card concept , i made it applet for it ,it will
contain a page with 2 text box ( 1- for recharge 2- for money deduction ) and two button , with button click i
want to select the applet and want to pass the apdu.
( a) how i can make host window application ? (i think awt will work for me? , *You can use swing for this to make interface and use smartcardIO http://docs.oracle.com/javase/6/docs/jre/api/security/smartcardio/spec/javax/smartcardio/package-summary.html for sending APDUs.
i never make any java window application yet) * It is easy you can look here and start: http://www.roseindia.net/java/example/java/swing/
( b) still i dont have any java card , i want to make it by using simulator, is it possible?Actually, smartcardIO will only interact with actuall card and for simulator you will have to use console for sending APDUs.
(c) in this scenario what framework i need to study Ex. Import javacard.framework.* for making
applet or from where i need to start.For your current case it is enough and for host app you should study smartcardio as i mentioned above.
Hope it helps.
Regards
Umer

How to create an instance (or instances) of the java card applet?

Here I have a backend, a host application (a terminal)
and a Java card that needs to be instanced to multiple cards to different users.
I wonder how you can make instances of Java card applets of different IDs or PINs.

933351 wrote:
Yes, I would like to emulate an environment first, Unfortunately I cannot help with this (never really used this tool).
I'd like to know also how to install them later on real cards.You need something that can perform the secure channel and card content management functions of the GlobalPlatform card specification. A good starting point is GPShell. It provides a simple scripting interface to be able to:
1) Authenticate with a card with developer keys
2) Load you cap file(s)
3) Instantiate any instances you require (you can have multiple instances from a single applet)
4) Send arbitrary APDU's to the card for testing.
GPShell has a README text file that is a good reference and there are sample scripts for a number of card types.
- Shane

Java Card OS operating system

Hi all.
I'm researching "How to build an Java Card OS". Any one can suggest me how to do it, which document i should read and follow. I read 3 specifications of JavaCard JCRE, JCVM and JCAPI but i still in fog.
Thanks all

hoaibaotre wrote:
Hi all, i have a BIG question. How can i implement JCVM by C with only JCVM Specification from SUN. I think that's not enough information to do. I read it but i didn't imagine the whole picture to do a JCVM.The JVM is just an interpreter that is able to execute byte code. It does not contain any libraries or other functionality. This is where the RE and API come in. These provide additional functionality so you do not need to implement it all in your applet.
One thing more, when we build a JCVM, that will go along with JCRE because it is really difficult to separate two issues.The JCRE contains the Java Card VM. From the introduction of the JCRE spec:
The Java Card™ platform, version 2.2.1 Runtime Environment contains the Java Card virtual machine (VM), the Java Card Application Programming Interface (API) classes (and industry-specific extensions), and support services.To have a complete JCRE, you need a JCVM and JC API. You can also add additional extensions to you JC RE/API by providing additional Java Card packages, which may use native code (similar to JNI) for interfacing with the card hardware directly.
Cheers,
Shane

Java card Applet RSA encryption Problems with Android

hi all,I am new to java card development. I have used nxp jcop 31-36 java card and nexus s for testing the application.so i have faced lot of problems.first of all i want to encrypt data coming from the android app using RSA1024 and send back to the android application.there are the problems I faced
1.RSA1024 and RSA2048 algorithms can't work with the nexus s Application.it means i can't receive any encrypt data from card.but when i test the application with eclipse jcop shell tool it is work properly.
2.when i run the application in nexus s the application is crashed.it gives some wired sound when tap the java card to android phone.it may be java card application crashed or give some wired sound from android OS level.
3.Then I Test the Application with Samsung S2. Sometimes it works but sometimes it crashed.in the S2 the encryption works fine(but we have to keep wile card 2 or 3 minutes).
these are the steps i followed in established the connection i android phone.So fist i created the ISO dep connection and first select the Application(00A40400AID).Then using transive method i send data to java card.In the Java card in the installation i have created the RSA key pairs and get the RSA public key and private key.in some method i got the APDU buffer and read data and encrypt this data.Then those are send back to the card. First i want to know is there any problem in Android Os or JCOP 31/36 card.And other thing each time i requested to java crd is that need to reset the java card and how to reset the Java card.(some brief idea)

Hi,
1) Import android.smartcard libraries,
2) Try to make a connection :
ISmartcardConnectionListener connectionListener = new ISmartcardConnectionListener()3) create an instance of smartcardclient:
smartcard = new SmartcardClient(this, connectionListener);4) get the list of readers :
String[] readers = smartcard.getReaders();you can check if a specific reader is connected or nor with
smartcard.isCardPresent(readers [0]);5) create a card channel and select your applet:
cardChannel = smartcard.openLogicalChannel(cardReader, APPLET_AID);
ICardChannel cardChannel = null;
cardChannel = smartcard.openLogicalChannel(cardReader, APPLET_AID);6) you can send and receive APDUs with this line of code:
byte[] response Apdu = cardChannel.transmit(commandApdu);Regards,
Hana

Reg: java card application needs

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