Java Card speed.

hello. I want to know how fast is the java card. and how fast the byte code are intrepted by the jcre to the card cpu instructions.
where can I find the byte code "assembly" api?

Performance differs for different implementations.

Similar Messages

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 & X 509 certificates

Hi,
i have a question about using Java Card with X.509 Certificates (including Attribute Certificates RFC 3281).
I already have some experience with JC 2.1.1. I have implemented applets for storing files and retrieving them (deployed on card using GemXplore Developer Kit)
and then managed the communication between off card application using the OCF 1.2.
But that was back in 2004. From what i see now OCF has been abandoned.
What i want to implement now is to load Certificates on Java Card (and store files as well).
I read that in order to manage Certificates, i have to use a PKCS 11 API (like Bouncy Castle or IAKI). Does this substitute OCF? I remember OCF was complimentary to PKCS 11.
And if it does, can i use such API to read and write other files except from Certificates? Finally does it treat Attribute Certificates (AC) same as PKI Certs?
I case you need clarifications, i ll be happy to provide. Thank you in advance
John

I think you can store keys and data to sign in the same applet. data is just data, it won't auto interfere.
about javacard 3, I think this is a very polemic subject. To feed the troll, I'll say that I'm working in a smart card company that has done cards for many years. since the beginning, i can say. All my colleagues and I think that javacard 3 is an evil. APDUs ARE card-ish and a good thing for such small CPUs. Javacard 3 has been made by sun under pressure of telcos that don't want complicated things, and are big specification fans, that never wrote a line of code. Javacard 3 will put a big overhead on card response time: as of now, there are many abstractions levels to cross to execute bytecode, and servlets and (dont know what will replace apdus) will increase transaction times.
cards are cards, not web servers. for us, public transportaton sectors guys, javacard 3 is a frankenstein. we want speed and low level access. we don't care about J2EE.
just don't tell me about the increased mem and power of new cards. How much will they cost? A javacard is already expensive, they will not get cheaper, and this will not help spreading javacards.
people working in the J2EE world will code for javacard 3 like they do for mainframes. They will require more powerful card just because they're too lazy to code a correct embedded software . Can you imagine that? Maybe javacard 4 will require a heatsink on cards.
this is a very personal opinion of course ;)

What Java compiler for Java Card development ?

What Java compiler and options should be used for Java Card development with the goal of generating correct, and (secondarily) small or/and fast code after conversion to Java Card bytecode using converter ?
In particular
- Is use of JDK 7 approved by Oracle for Java Card development? That would solve security problems associated with (the web components of the JRE of) some earlier JDK, including the latest JDK6. The JCDK 3.0.4 release notes states "+the commercial version of Java Development Kit (JDK software) version 6 Update 10 (JDK 6 Update 10) or later is required+, but that does not answer that question.
- Anyone had _bad_ experience (like incorrect or disastrous code) with the Java compiler bundled with Eclipse ? I have seen at least one case where org.eclipse.jdt.core_3.7.3.v20120119-1537.jar produced slightly more compact code than javac.
- Anyone had _bad_ experience with javac in jdk1.3 ? In an applet involving a "finally" clause, I've seen it generating more compact code than later javac (which in my test triplicated the code for the finally clause).

What Java compiler and options should be used for Java Card development with the goal of generating correct, and (secondarily) small or/and fast code after conversion to Java Card bytecode using converter ?-target -source may be required to generate compatible byte code. Depending on the CAP file converter being used debug information may also help. Remember that Java Card is a subset of the Java language (also there are short opcodes that Java doesn't have etc) so a lot of the work for optimisation is done by the converter or the JCRE. You can look at the JCA code generated to determine what works best for your applets. There are also some ways of stripping out dead code etc from JCA files (return statements after a throw etc) to reduce your code size. Most of the speed optimisations come from your code (avoiding context switches and unnecessary security/access checks).
The compactness of your Java Card binary may not be directly related to the size of your compiled Java code. It can depend on the converter you use and any optimisaitons the JCRE might try to do when the code is loaded.
- Is use of JDK 7 approved by Oracle for Java Card development? That would solve security problems associated with (the web components of the JRE of) some earlier JDK, including the latest JDK6. Java Card does not use any of the libraries from the JDK/JRE. All of the libraries are provided by the JCRE on the smartcard.
The JCDK 3.0.4 release notes states "+the commercial version of Java Development Kit (JDK software) version 6 Update 10 (JDK 6 Update 10) or later is required+, but that does not answer that question.Anything above JDK6u10 is supported. If you use Java 7 you may need to add a -source and -target flag when compiling.
- Anyone had _bad_ experience (like incorrect or disastrous code) with the Java compiler bundled with Eclipse ? I have seen at least one case where org.eclipse.jdt.core_3.7.3.v20120119-1537.jar produced slightly more compact code than javac.We generally use the Eclipse compiler as we find that we get more deterministic builds. When CAP files are sent for security review it is helpful to have the reviewer able to generate a CAP file that matches the one you sent to confirm the binary is what you say it is.
- Anyone had _bad_ experience with javac in jdk1.3 ? In an applet involving a "finally" clause, I've seen it generating more compact code than later javac (which in my test triplicated the code for the finally clause).We do not use anything less than Java 6 for compilation.
- Shane

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 ?

Step by step installation for java card kit 2.2.2

can anyone help me with a complete step by step installation information for java card kit 2.2.2, i already tried to follow the instruction given in the software i download n still stuck in setting the java path. any recommendation
thanks for the help

The javacard API is for developing applets on card. Java 6 is for developing clients off-card.
yes u can use any java IDEs like netbeans or jcreator. But you will have to select the libraries within the downloaded java card kit folder for ur IDE in order to compile successfully.
try reading up the documentation and run the samples in the java card kit. thats a good place to start.

J2me and java card, need help to communicate

we are trying to put together a reader to read smartcards using j2me and we figure that it would be easiest if we could develop it to work with java cards rather than standard smart cards, the problem is we get garbage when we communicate to it, the chip sends us crap, any suggestions what might be wrong, any calls we might be missing, has anyone worked with j2me and java cards or smart cards, any help would be appreciated.
einar

.... reader app and the ME behind it .... smells like mobile ....
First of all - if you want to have one mobile application running on this just make sure that whatever is written in ME can use drivers from the reader chip ....
Workin on the PC is something completely different. There was one good example how to develop one host application in Java provided with the JCOP tools long ago ... I don't know if this is now in the new Eclipse tools.
But - there was a small API provided that can give you good hints what to do - and - once you have it on the reader side - you can easily integrate ME methods with this ...

How to check the output of a java card program ?

Hi,
I am new to java card technology.I am trying to run a simple helloworld program given in the java development kit2.2 -windows samples in eclipse3.5.
For running I followed the following steps:-
1) Firstly,I went to JCWDE->start
2) then on Project->java tools->deploy
It shows me following output :-
Java Card 2.2.2 APDU Tool, Version 1.3
Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
Opening connection to localhost on port 9025.
Connected.
Received ATR = 0x3b 0xf0 0x11 0x00 0xff 0x00
CLA: 00, INS: a4, P1: 04, P2: 00, Lc: 09, a0, 00, 00, 00, 62, 03, 01, 08, 01, Le: 00, SW1: 90, SW2: 00
CLA: 80, INS: b0, P1: 00, P2: 00, Lc: 00, Le: 00, SW1: 90, SW2: 00
CLA: 80, INS: b2, P1: 01, P2: 00, Lc: 00, Le: 00, SW1: 90, SW2: 00
CLA: 80, INS: b4, P1: 01, P2: 00, Lc: 18, 01, 00, 15, de, ca, ff, ed, 01, 02, 04, 00, 01, 0b, 01, 02, 03, 04, 05, 06, 07, 08, 09, 00, 01, Le: 00, SW1: 64, SW2: 3a
CLA: 80, INS: bc, P1: 01, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 02, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 02, P2: 00, Lc: 20, 02, 00, 1f, 00, 15, 00, 1f, 00, 0f, 00, 15, 00, 36, 00, 0c, 00, 69, 00, 0a, 00, 14, 00, 00, 00, 6c, 00, 00, 00, 00, 00, 00, 02, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 02, P2: 00, Lc: 02, 01, 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 02, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 04, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 04, P2: 00, Lc: 18, 04, 00, 15, 02, 03, 01, 07, a0, 00, 00, 00, 62, 01, 01, 00, 01, 07, a0, 00, 00, 00, 62, 00, 01, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 04, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 03, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 03, P2: 00, Lc: 12, 03, 00, 0f, 01, 0b, 01, 02, 03, 04, 05, 06, 07, 08, 09, 00, 00, 00, 14, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 03, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 06, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 06, P2: 00, Lc: 0f, 06, 00, 0c, 00, 80, 03, 01, 00, 01, 07, 01, 00, 00, 00, 21, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 06, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 07, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 07, P2: 00, Lc: 20, 07, 00, 69, 00, 02, 10, 18, 8c, 00, 01, 18, 11, 01, 00, 90, 0b, 87, 00, 18, 8b, 00, 02, 7a, 02, 30, 8f, 00, 03, 3d, 8c, 00, 04, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 07, P2: 00, Lc: 20, 8b, 00, 02, 7a, 05, 23, 19, 8b, 00, 05, 2d, 19, 8b, 00, 06, 32, 03, 29, 04, 70, 19, 1a, 08, ad, 00, 16, 04, 1f, 8d, 00, 0b, 3b, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 07, P2: 00, Lc: 20, 16, 04, 1f, 41, 29, 04, 19, 08, 8b, 00, 0c, 32, 1f, 64, e8, 19, 8b, 00, 07, 3b, 19, 16, 04, 08, 41, 8b, 00, 08, 19, 03, 08, 8b, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 07, P2: 00, Lc: 0c, 00, 09, 19, ad, 00, 03, 16, 04, 8b, 00, 0a, 7a, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 07, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 08, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 08, P2: 00, Lc: 0d, 08, 00, 0a, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 08, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 05, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 05, P2: 00, Lc: 20, 05, 00, 36, 00, 0d, 02, 00, 00, 00, 06, 80, 03, 00, 03, 80, 03, 01, 01, 00, 00, 00, 06, 00, 00, 01, 03, 80, 0a, 01, 03, 80, 0a, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 05, P2: 00, Lc: 19, 06, 03, 80, 0a, 07, 03, 80, 0a, 09, 03, 80, 0a, 04, 03, 80, 0a, 05, 06, 80, 10, 02, 03, 80, 0a, 03, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 05, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b2, P1: 09, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: b4, P1: 09, P2: 00, Lc: 17, 09, 00, 14, 00, 03, 0e, 27, 2c, 00, 0d, 05, 0c, 06, 04, 03, 07, 05, 10, 0c, 08, 09, 06, 09, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: bc, P1: 09, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
CLA: 80, INS: ba, P1: 00, P2: 00, Lc: 00, Le: 00, SW1: 64, SW2: 21
Can anyone tell me what is this output? And Am i deplyoing in the right way?

Hi,
You might want to check the JCDK user guide (cJDK_Users_Guide_bin_do.pdf) for details of using an emulated card environment. It outlines how to use the simulators provided with the JCDK. This should tell you how the deploy process works and will give you some insight into what this script is doing.
Cheers,
Shane

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 to Install .CAP file in the Java Card?

Hi Friends..
How to install *.CAP* file in the Java Card?..
I've GPShell script as follows :
mode_211
enable_trace
establish_context
card_connect -readerNumber 2
open_sc -security 1 -keyind 0 -keyver 0 -mac_key 404142434445464748494a4b4c4d4e4f -enc_key 404142434445464748494a4b4c4d4e4f
install_for_load -pkgAID a00000006203010c01 -nvCodeLimit 500 -sdAID A000000003000000
load -file HelloWorld.cap
card_disconnect
release_contextwith that script i can load HelloWorld.cap file successfully..
Now, how to install the HelloWorld.cap file?..
if i add script : load -file HelloWorld.cap i got this error :
install -file HelloWorld.cap
file name HelloWorld.cap
Command --> 80E602001B09A00000006203010C0107A00000015100000006EF04C60201A80000
Wrapped command --> 84E602002309A00000006203010C0107A00000015100000006EF04C60201
A80030C859793049B85300
Response <-- 6985
install_for_load() returns 0x80206985 (6985: Command not allowed - Conditions of
use not satisfied.)i ask this question because when i tried to select the applet through its AID, by this script :
establish_context
card_connect -readerNumber 2
select -AID a00000006203010c0101i got this message error : select_application() returns 0x80216A82 (6A82: The application to be selected could not be found.)
but there's exactly any that AID in my Java Card..
here's is the list of AID from My Java Card :
C:\GPShell-1.4.2>GPShell listgp211.txt
mode_211
enable_trace
establish_context
card_connect -readerNumber 3
* reader name OMNIKEY CardMan 5x21-CL 0
select -AID a000000003000000
Command --> 00A4040008A000000003000000
Wrapped command --> 00A4040008A000000003000000
Response <-- 6F108408A000000003000000A5049F6501FF9000
open_sc -security 1 -keyind 0 -keyver 0 -mac_key 404142434445464748494a4b4c4d4e4
f -enc_key 404142434445464748494a4b4c4d4e4f // Open secure channel
Command --> 80CA006600
Wrapped command --> 80CA006600
Response <-- 664C734A06072A864886FC6B01600C060A2A864886FC6B02020101630906072A864
886FC6B03640B06092A864886FC6B040215650B06092B8510864864020102660C060A2B060104012
A026E01029000
Command --> 8050000008AAF7A87C6013BC0300
Wrapped command --> 8050000008AAF7A87C6013BC0300
Response <-- 0000715457173C2A8FC1FF0200937A55C288805D8F2A04CCD43FA7E69000
Command --> 848201001023CA18742D36165ED992CFF2146C3D51
Wrapped command --> 848201001023CA18742D36165ED992CFF2146C3D51
Response <-- 9000
get_status -element 10
Command --> 80F21000024F0000
Wrapped command --> 84F210000A4F004FF8BE1492F7275400
Response <-- 0CF0544C00004D4F44554C415201000009A00000006203010C010100010AA000000
06203010C01019000
GP211_get_status() returned 2 items
List of Ex. Load File (AID state Ex. Module AIDs)
f0544c00004d4f44554c4152        1
a00000006203010c01      1
        a00000006203010c0101
card_disconnect
release_contextPlease help me..
And please correct me if i'm wrong,,
Thanks in advance..

Any suggestions for my question?..
Please help me..
Thanks in advance..

Where can i find a complete course and some samples about using java card !

hello !
i am new to java card and i am seeking for complet course and samples of how i can use this new developement kit and to get familiarized with it !
any help will be very appreciated
thanks

i have got t JCDevKit_User_Guide.pdf this file describes the using of jav card ! but when i tried to execute what it said on dos i did it succifully but i could not see the result? i mean is there an applet to se or to integrate in an html file or to use elswhere?
i mean , how nomalaly can i use the files generated in the sample �? where to integrate them and where to use them?
please help me and excuse my exhaustive questions!
thanks

How to load a java card applet into a java card

Dear All,
I am a novice to java card technology..
I have done some search on how to load a java card applet into a smart card but haven't found a satisfactory answer. I have read about installer.jar and scriptgen tool but I want to load the applet from a java program and not from command line. It would be of great help if somebody can help me out.
If somebody can share a sample program which load a javacard applet(.CAP file) into a smart card, I will be very thankful.
I am able to find some client applications which help us send APDU commands and recieve response APDU's to interact with an applet loaded on to the smart card but not application which actually load the applet.
I have heard of OCF and GP.. some say that OCF technology is outdated and no longer in use.. can somebosy throw some light on this too..
cheers,
ganesh

hi siavash,
thanks for the quick response.. i checked out GPShell as suggested, it looked like a tool by which one can load an applet on to card and send some sample apdu commands... but I want to load the applet from the code.
My application should look something like this.. it will be a swing applicaton where I have a drop down with a list of readers, I select the one desired and then click on "LOAD" after inserting a blank java card, at this point my applet which is stored in my DB should get loaded on to the java card. The next step should be to personalize it where I enter the values for the static variables of my applet and click "PERSONALIZE", at this point all these values should be embedded into APDU commands and sent to the java card for processing.
For achieving this I am yet to find a comprehensive sample or documentation on the net.
Please help...
regards,
ganesh

How to create a java card library (jar file to be used in other programs)

Hi all,
I am working on JCOP and writing quite a bit of applets for the java card . Now i have lots of code that could be reusable for example sending SMS, encryption routine, etc.. So this part of the code i want to put into a utility class and create a package out of it. This utility package i must be able to import into my programs what i write.
I tried the normal way of creating the jar by renaming the CAP file of the utility class, also tried including the /javacard/* files also into the jar file as indicated by sfarmer(active forum member here). But none seems to work. I tried contacting NXP folks and they indicated that it may be possible only by way of Sharable Objects.
But some how i am not convinced why i should use Sharable object for this. So if any one can throw some light into this regard it will be immensely helpful to me and my project.
Regards
Prakash

Hi,
Well the variable defined are as below
public static byte[] msgdata = new byte[255];
private static final byte[] HEADER_TEMPLATE = {
          (byte) 0x81, (byte) 0x03, (byte) 0x01, (byte) 0x21, (byte) 0x00, // Command details tag
               (byte) 0x82, (byte) 0x02, (byte) 0x81, (byte) 0x02, // Device Identities tag
               (byte) 0x8D, // Text String tag
               (byte) 0x00, // length
               (byte) 0x04, // Text String tag
the msgdata is declared public so that i can access this as a Class member in my other program doing Utilities.msgdata. But the problem is now that if i dont declare it as final then the compiler gives me the below error
"library has initialized array for non-final, non-static field Utilities, msgdata, [B, attr jc-field: tok 0, public static"
If i make it final then i cannot change it... So now i am stuck..
Any help will be highly appreciated...
Regards
Prakash

How to find out memory of a java card

is there anyone could tell me that how can we check the size of the memory of a card? thank you in advance:D

If the card is a Java Card 2.2.1, create an applet that returns
JCSystem.getAvailableMemory(), install and queryit.
Some other ideas for getting the free memory on card were presented in the thread "Java Forums - Free memory on card"
http://forum.java.sun.com/thread.jspa?threadID=647894&tstart=30
Jan

The version number of export file in Java Card 2.2 is not correct

Hi all,
I used jdk1.3.1 and java card 2.2's exp2text tool to see the content of an export file. The value of minor_version is 1. But the JCVM 2.2 spec. says it should be 2. So which one is correct?
Joey

Read my post again....indicate binary compatibility or incompatibility between successive implementations of a package.
I can gerenate CAP files generated with JC 2.2., and load onto my JC 2.1.1 cards. AS LONG as I'm not using JC 2.2 implementation.
Run the exp2Text on javacard.framework.service and notice that it should read minor = 2. That's because to use that export, JC 2.2 is minimal required implementation.

Java Card speed.

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