Java Card simulator with MD5 MessageDigest support?

Are there any Java Card simulators with support for the MD5 MessageDigest available? I checked both cref and jcwde, but they only support ALG_SHA.

Thanks.
By the way, do you happen to know if the newer JCOP cards (e.g. the NXP (Philips) JCOP 41 V2.2.1/72K USB
NXP (Philips) JCOP 41 V2.2.1/72K) still support the MD5 MessageDigest? Older JCOP cards seem to support MD5, but at least in the publicly available JCOP 41 specs there is no mention of MD5 anymore; e.g. at http://www.bsi.bund.de/zertifiz/zert/reporte/0426b.pdf

Similar Messages

How does the Java Card simulator work? (Using NetBeans)

Hi,
I'm using NetBeans and am trying to simulate:
Someone powering up the card, saving a value, and powering down... And then they power it up again, get the value, and power down.
When I edit my APDU script to do the second part, the value I entered the first time is never stored, which probably means that when I 'run' my code, my application is loaded and everything is initialized again.
How do I edit NetBeans to not install the application every time I hit 'run'? And not to initialize the values, so that when i power it up again, I can get a value stored in a previous running of a script?
When I use powerup, powerdown and then powerup again, NetBeans doesn't powerup the simulator the second time. So understanding the Java Card Simulator would also help... where it is, how it runs, what options it runs with, etc.

Hi Shane,
I have not read anywhere else that the JC3 cards are not available, thank you so much for that tip! I am not doing it for research, but I am working on this alone and will have to deploy a card later on. I will be getting all the right versions now.
I'll ask the question then, using just the JCDK:
If I want to save a value on the card, and then need it at a later time, how do I go about it. Do I do the following?
(1) Install the application on the card. (I know how to do this)
(2) Run the simulator using -o "eeprom data filename"
(3) Save the value using the APDU calls and Java code on the card + close connection.
Code:
public class MyApp extends Applet {
    private static byte[] data = {0x00, 0x00, 0x00};
    // Install method, method to register, process method that can call saveData or recallData, etc
    public static void saveData()
       // code to change data
       data = {0x01, 0x01, 0x01};
    public static byte[] recallData()
       // code to return data
       return data;
}(4) Run the simulator using -i "eeprom data filename". get the value using recallData().
Will selecting the app not make data initialize to {0x00, 0x00, 0x00} again?
If I know this is the correct way of going about it, then I can work towards it getting done.
From other examples I can see that this is probably the way it should work, but my data array always returns as {0x00, 0x00, 0x00}.

Java card simulator and WTK communication problem.

Hi ,
I am a newbie to java card .I am doing project on java card based sim.
For that I am using JavaCard SDK 2.2.2 and WTK 2.5.2 .
Now when i am trying to connect to cref(java card simulator) from java card midlet,I am getting protocol mismatch error.This is because of WTK runs on slot T=0 and cref runs on T=1.
then i tried with jcdk3.0.1 classic edition.It provides cref configured to run on both slots T=0 and T=1.
But when I tried to deploy jcrmi applet on cref running on T=0 i am getting the same error "Protocol mismatch error".
Can anybody please tell, if there is any way to configure cref to run with T=0?
Please reply ASAP, as i am stucked with the problem from more than a month.
Thanks in advance,
Saviy

Thanks Anki for replying.
I am trying to run RMISample from development kit.With steps given in guide as follows
1.cref -o demoee
2.Navigate to the
JC_CLASSIC_HOME\samples\classic_applets\RMIPurse\applet
directory.
3.ant all
it works fine but when i do it with following steps:
1.cref -o -t0 demoee
2.Navigate to the
JC_CLASSIC_HOME\samples\classic_applets\RMIPurse\applet
directory.
3.ant all
i am getting protocol mismatch error.

Firewall - Java Card project with two packages.

My Java Card project has got two Java Card packages. One of them contains only the Java Card applet. The other package contains all other classes. We did the splitting because our application is large and if all the code is left inside the one package if debug mode was checked, the size of the cap file was more than 64 bytes and the CAP file with that size cannot be installed inside the simulator. That situation made the programming difficult. Therefore the splitting took place. What is my question? If we have two packages, is there a firewall between them or the packages are in the same group context.

A library package has different restrictions to an applet package. As for the firewall, the data created in your library package is owned by the applet instance that created it. That means any data or objects created by calling your library from your applet will be in the same context as your applet. Any other applet accessing this library will not be able to access instances from the original context. This is only a problem with static fields and methods etc that are shared between both applets.
Cheers,
Shane

Java Card compatibility with readers... (please help me!!)

Hi,
I would like to know how to determine the compatibility of a existing reader with the JavaCard technology.
I have studied the standar ISO 7816 and I'm not sure if a reader must be compliant with absolutely all
parts of the standar (Part 1,2,3,4,5,6) to be capable of read, write Java Cards and select the applet to
execute.
Especifically I need to know if the readers GEMPC410 and CASTLES EZ200 are able to read, write
and execute multiple java applications.
The specifications that a read, said that GEMPC410 can read and write ISO7816 1/2/3/4 and
CASTLES EZ200 can read and write ISO7816 1/2/3 but i have the following doubt:
These readers should be compatible with the part 4 and/or 5 of the ISO standar to
interchange commands with the reader (Part 4) and identifie the applications to execute (Part 5)?.
Where I can find more information about this issues?
Thank you very much for your soon answer.

Well,
There are two type of readers you can use with JavaCards:
Contact readers
As specified in ISO7816, for the contact readers working with T=0 and T=1 protocols. On win machines they are normally supported with the PC/SC interface, most of the readers are able to talk to that interface. In other words - if you can use any card on ur comp and if it is win platform JC will work fine.
Contactless readers
As specified in ISO14443, this babies are talking T=CL protocol. For now I know only JCOP30 products that are operating also in contactless mode. For this you will have to acquire some contactless reader and they are commong with drivers for standalone apps or for the PC/SC IF.
But chance that you will use the second option in next 3 years is rather small.

Java Card simulator & Windows 2000

Hi all,
I chose to use the sun's card simulator (java card Development Kit Version 2.2_01) under windows 2K but from the readme, only WinNT 4.0 platforms are supported. Is there anybody that tried it under Win2K successfully?
thanks in advance,
KAnis

works fine on w2k

How do I test a Java card applet with different AIDs on the fly?

... Like sweeping cards from employees in a queue of people lining up in the morning?
When I created my applet, the aid is a fixed value inside the class.
Whenever I wanted to test it with another value, I changed that AID and rerun the applet.
I find it very cumbersome that needs to be rerun and rerun, over and over again.
How do I test the applet easily with any values of AIDs that I'd like to put in, on the fly.
I know I can't simulate the sweeps of card in the applet because I can't have a main method with a signature
of Strings[] args or String[] args. I can only have JUnit to help me out, but still java card doesn't allow either
main(Strings[] args) or TestCase to inherit from.
Thanks
Jack

your question is hard to understand but:
an applet always has one definite AID and you cant change it after install as far as i know
a) you want to test many cards with diffrent AIDs?
->send a list of select commands and check the return values
b)you want one card with the same applet to be available for many AIDs?
->install many dummy applets forwarding the commands to one core applet
c)i think i didnt get your point :/

How do I communicate a Java Card applet with a server?

I'm new to Java and Java Card and currently developing a smart card system. I'm not sure what to use on my applet or server, JCSystem or SecureConnection or something else?
If I'm writing a server application, then how do I install it so that I can simulate it with cjre?
Thanks in advance.
p/s: Connection is using TSL.

The flow is like this:
Java Card --> POS terminal -> Server
Yes. I'm using JC3.
Here's what I've achieved so far using SocketConnection
SocketConnection sc = (SocketConnection) Connector.open("socket://localhost:50007");
InputStream is = sc.openInputStream();
OutputStream os = sc.openOutputStream();
os.write("Hello world!".getBytes());
is.read(buffer);
os.close();
is.close();
sc.close(); Edited by: andirady on Dec 4, 2012 11:59 PM

Java Card Simulator

Hi ,all
Pls help me out.
I am new to the Java Card Technology.
I want to use javacrad as a part of my project.
So Pls any one tell me whether there is any simulator available for the Smart Card & terminal.
also tell me how to start using it .
if yes pls send me the link..
Pls pls pls help me.
regards
Mihir

Hi Mihir,
you could use the JCOP-Tools which are a plugin for Eclipse simulating an IBM JCOP smart card. These tools can be downloaded from:
http://download.boulder.ibm.com/ibmdl/pub/software/dw/jcop/tools.zip
You can find further information at:
http://www-306.ibm.com/software/wireless/wecos/tools.html
I hope that helps.
Thorsten

Java Card ECKey with NIST P256 Curve. How to encode a negative coefficient?

I try to use an ECKey (http://www.win.tue.nl/pinpasjc/docs/apis/jc222/javacard/security/ECKey.html) with the P-256 curve defined by NIST on a Java Card:
Curve P-256
p = 115792089210356248762697446949407573530086143415290314195533631308867097853951
r = 115792089210356248762697446949407573529996955224135760342422259061068512044369
s = c49d3608 86e70493 6a6678e1 139d26b7 819f7e90
c = 7efba166 2985be94 03cb055c 75d4f7e0 ce8d84a9 c5114abc af317768 0104fa0d
b = 5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b
Gx = 6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296
Gy = 4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5
with y²= x³ -3x + b (mod p)
As far as I understand it I use
p for setFieldFP(), prime p corresponding to the field GF(p)
r for setR(), order of the fixed point G of the curve,
b for setB(), second coefficient of the curve,
Gx and Gy for setG(), fixed point of the curve (after encoding them as ANSI X9.62),
cofactor of the order of the fixed point G is 1, so setK(1)
The coefficient A is -3 (according to the definition of the curve). But how do I have to encode -3 (as a byte[]), so that I can set it with setA()?

Refer to page 33 in this document: http://www.nsa.gov/ia/_files/nist-routines.pdf
Use the hex values. You don't have to calculate any parameters yourself.
Regards,
Adriaan

Java card simulation

i have to simulate the java card applet which is doing all crypto functions and
then i will communicate to it by WTK SATSA using eeprom image of the java card applet..
i don't have to install it on card, i hv to simulate everything..
is there a way to do it... or we need a licensed tool for it..
does WTK 2.5 cref and java card 2.2.2 cref will be able to communicate..
please help, i need this info. urgently

Are you referring to a Floppy diskette drive ?

How does the Java card simulator work? and other misc questions

First, I have a class inherited from Applet. Okay, I did that.
How do I convert this class to a CAP file? I mean I have a class file which is compiled by javac, do I use this file to convert into a CAP file? What is an AID? Do I make up this AID?
In this .scr file (APDU Script), I understand the first 4 bytes, it means to create an Applet, but what about the rest? I know there are some intermixes of lengths and AIDs, I just can't decipher this.
// create wallet applet
0x80 0xB8 0x00 0x00 0x14 0x0a 0xa0 0x0 0x0 0x0 0x62 0x3 0x1 0xc 0x6 0x1 0x08 0 0 0x05 0x01 0x02 0x03 0x04 0x05 0x7F;
And here comes the main question?
How does the simulator work? How do I generate the data that mimics what the card reader reads?
Thanks
Jack

At first blush,
I have these when executing the RMIPurse sample according to the user guide
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported type long of field interfaceHash.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type long of method dispatch.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.SkeletonMismatchException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported type long of field interfaceHash.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported type long of field serialVersionUID.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode pop in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode pop in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of method class$.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method forName(java.lang.String) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported return type String of invoked method getMessage() of class java.lang.Throwable.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.lang.NoClassDefFoundError.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.At the first command prompt, I typed cref -o demoee
and at the next command prompt, I typed ant all, and I got those error messages.
Thanks, you are so nice to help :)
Jack

Does Java Card 2 API support all the smart card?

Does Java Card 2 API support all the smart card? I guess all the java cards are smart card but all the smart card are not java card. so Java card 2 API supports only java card. It does not support all the smart card. Please somebody let me know wheather I am correct or not. Because I want to make an application which supports all the smart card. I am confuse wheather I have to use JavaCard API or OCF or any other framework/API. Please help me. Thanks

I am clear with java card.
But I want to make an application which can verify the PIN inside card and read logon certificate, which is saved inside card. Is there any framework which I can use to full fill my simple requiremnt. I dont want to deal with any applet inside card.

Urgent ! writing a java card applet -APDU problem

hi
i'm fairly new to the java programming language. i'm trying to write an RSA java card applet to run on a java card simulator.
I am not sure at all what code i need to write for the CLA byte in the command APDU and what code i need to write for the INS byte in the command APDU, and where exactly to put it in my program.
if anybody knows please could you help me out.
So far i have written the code below.
thanx
louise
import javacard.framework.*;
import java.math.*;
import java.util.*;
/*the public key is the public part of the key. Anyone
can have it. It can only encrypt data, not decrypt.*/
public class publickey extends Applet{
//code of the CLA byte in the command APDU header
final static byte publickey_CLA = (byte)0x00;
//max number of characters for text message is 60
final static char MAX_TXT_MSG = 0x3c;
//MAX number of tries (3) before PIN is blocked
final static byte PIN_TRY_LIMIT = (byte)0x03;
//size of PIN must be 4 digits long
final static byte PIN_SIZE = (byte)0x04;
//below status word(SW) values are returned by applet
//in certain circumstances:
//signal that the PIN verification failed
final static short SW_PIN_VERIFICATION_FAIL = 0x6300;
//signal that PIN validation required for txt msging
final static short SW_PIN_VERIFICATION_REQUIRED = 0x630;
//instance variables declaration
OwnerPIN pin; //variable for holding owners pin
BigInteger n,e;
String owner;//variable for holding owners name
/*make a public key. Do not do it yourself, but
make a public key from a private key.*/
publickey(String iowner,BigInteger in,BigInteger ie){
owner=iowner;
n=in;
e=ie;
public void process (APDU apdu) {
byte[] buffer = apdu.getBuffer();
//check Select APDU command
if((buffer[ISO7816.OFFSET_CLA] ==0) &&
(buffer[ISO7816.OFFSET_INS] ==(byte) (0xA4)) )
return;
if(buffer[ISO7816.OFFSET_CLA] !=publickey_CLA)
ISOException.throwIt
(ISO7816.SW_CLA_NOT_SUPPORTED);
/*read the key back from a string.*/
publickey(String from){
StringTokenizer st=new StringTokenizer(from," ");
owner=st.nextToken();
n=readBI(st.nextToken());
e=readBI(st.nextToken());
/*use the key to encrypt a 'message' m. m should be a
number from 1 to n (n not included).
use makemessage to convert your message to a BigInteger.
BigInteger encrypt(BigInteger m){
return m.modPow(e,n);
/*make a string from this key.*/
public String toString(){
return owner+" "+printBI(n)+" "+printBI(e);
/*help methods for reading and writing:*/
final static int radix=36;
static String printBI(BigInteger b){
return b.toString(radix);
static BigInteger readBI(String s){
return new BigInteger(s,radix);
/* these methods convert an arbitrary message,
in the form of an array of bytes, to a message
suitable for encryption. To do this random bits
are added (this is needed to make cracking of the
system harder), and it is converted to a BigInteger.*/
BigInteger makemessage(byte[] input){
/*to understand this part of the program,
read the description of the BigInteger constructor
(in the standard java help). */
if(input.length>128 ||
input.length*8+24>=n.bitLength())
return new BigInteger("0"); //error! message to long.
byte[] paddedinput=new byte[n.bitLength()/8-1];
for(int i=0;i<input.length;i++)
paddedinput[i+1]=input;
paddedinput[0]=(byte)input.length;
for(int i=input.length+1;i<paddedinput.length;i++)
paddedinput[i]=(byte)(Math.random()*256);
return new BigInteger(paddedinput);
/*the inverse of makemessage.*/
static byte[] getmessage(BigInteger b){
byte[] paddedoutput=b.toByteArray();
byte[] output=new byte[paddedoutput[0]];
for(int i=0;i<output.length;i++)
output[i]=paddedoutput[i+1];
return output;
class privatekey{
/*the data of a key*/
BigInteger n,e,d;
String owner;
int bits;
Random ran;
/*unimportant things, needed for calculations:*/
static int certainty=32;
static BigInteger one=new BigInteger("1"),
three=new BigInteger("3"),
seventeen=new BigInteger("17"),
k65=new BigInteger("65537");
/*make a new key. supply the name of the owner of the
key, and the number of bits.
owner: all spaces will be replaced with underscores.
bits: the more bits the better the security. Every
value above 500 is 'safe'. If you are a really paranoid
person, you should use 2000.*/
privatekey(String iowner,int ibits){
BigInteger p,q;
bits=ibits;
owner=iowner.replace(' ','_');//remove spaces from owner name.
ran=new Random();
p=new BigInteger(bits/2,certainty,ran);
q=new BigInteger((bits+1)/2,certainty,ran);
n=p.multiply(q);
BigInteger fi_n=fi(p,q);
e=chooseprimeto(fi_n);
d=e.modInverse(fi_n);
/*read the key back from a string*/
privatekey(String from){
StringTokenizer st=new StringTokenizer(from," ");
st.nextToken();
n=readBI(st.nextToken());
e=readBI(st.nextToken());
d=readBI(st.nextToken());
/*some help methods:*/
static BigInteger fi(BigInteger prime1,BigInteger prime2){
return prime1.subtract(one).multiply(prime2.subtract(one));
static BigInteger BI(String s)
{return new BigInteger(s);}
BigInteger chooseprimeto(BigInteger f){
/*returns a number relatively prime to f.
this number is not chosen at random, it first
tries a few primes with few 1's in it. This
doesn't matter for security, but speeds up computations.*/
if(f.gcd(three).equals(one))
return three;
if(f.gcd(seventeen).equals(one))
return seventeen;
if(f.gcd(k65).equals(one))
return k65;
BigInteger num;
do{
num=new BigInteger(16,ran);
}while(!f.gcd(num).equals(one));
return num;
final static int radix=36;
static String printBI(BigInteger b){
return b.toString(radix);
static BigInteger readBI(String s){
return new BigInteger(s,radix);
/*returns the public key of this private key.*/
publickey getpublickey(){
return new publickey(owner,n,e);
/*the same encryption that the public key does.*/
BigInteger encrypt(BigInteger m){
return m.modPow(e,n);
/*decryption is the opposite of encryption: it
brings the original message back.*/
BigInteger decrypt(BigInteger m){
return m.modPow(d,n);
public String toString(){
return owner+" "+printBI(n)+" "+printBI(e)+" "+printBI(d);
/*this main demonstrates the use of this program.*/
public static void main(String[] ps){
say("************ make key:");
privatekey priv=new privatekey("sieuwert",92);
publickey pub=priv.getpublickey();
say("the public key:"+priv);
say("************ encrypt message:");
byte[] P="RUOK?".getBytes();
BigInteger Pc=pub.makemessage(P);
say("converted:\t"+printBI(Pc));
BigInteger C=pub.encrypt(Pc);
say("coded message: "+printBI(C));
say("************ decrypt message:");
BigInteger Pc2=priv.decrypt(C);
say("decoded:\t"+printBI(Pc2));
byte[] P2=publickey.getmessage(Pc2);
say("deconverted: "+new String(P2));
static void say(String s){
System.out.println(s);

Command APDU is not written in your source code, rather it is sent from PC or programmed Card Acceptance Device/ Card Reader/ Terminal.
The code installed in the Java Card should be able to handle the Command APDU received and process it accordingly, and finally your code should be able to send out response APDU.
You may think your code as a decoder, to retrieve each byte (CLA, INS, P1, P2, DATA, LC) using the Java Card API, you should be able to do it.
Also, I notice in your code that you want to work out with strings, but Java Card does not support strings, chars, long, float, double ...
to send out reponse APDU, there are certain steps that you can use, not just simply print like ordinary J2SE may use.
hope this will help u

Java Card File System ...Please reply

Hi all ,
I am working on Java Card technology for last one year . Presently I am facing some problem regarding some file concept of java card .
I know that Java Card 2.1 does not support file system . But I want to simulate the file system in java card using applets . i.e . I want to write an application(applet) , which can simulate the EF , DF in smart card . Whenever APDU command is send to the file system applet , it should generate a Elementary file (EF) or dedicated file (DF) etc and store data to that file.
Can I do this type of thing using Java Card ? I am really in doubt .
If you have any idea on this , please let me know your view on this . If you know any open source code for this type of simulated Java card file system , please let me know .
I am desperately looking for a help .
regards
Dibyendu .
you can contact me to this email
[email protected]

dear duran ,
You have written that
"Follow the guidelines for the different supported filesystems on the JC"
But after Java Card version 2.0 , it does not support file system . I am using Java Card 2.1 .
Could please some sample code to my mail Id , so that I can take a look at it .
My mail id is : [email protected]
Please share the idea , as I am really need some help.
Regards ,
Dibyendu.

Java Card simulator with MD5 MessageDigest support?

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