Does Java Card require a USB CCID-compliant smart card reader?

Hi experts,
Does Java Card require a USB CCID-compliant smart card reader? I'm currently working with PC/SC usb token and it requires usb CCID-compliant smart card reader, which seems very inconvenient for my clients and I'm wondering if Java Card has the same issue? (I'm thinking about switching the project to Java Card)
Any help will be much appreciated!
Z.Zen

Hi,
You will still need to install drivers for some card readers to function correctly. I know some work out of the box on Windows and OS X (10.5+ at least) ships with the pcsclite CCID driver from the Muscle card project. When I view my reader in Windows device manager the Manufacturer is "USB CCID Compliant".
The only real difference between what you are doing with the USB CCID token and Java Card is that the card and reader are separate in the Java Card option where as the USB token has the reader and chip in one package.
Cheers,
Shane

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Message Edited by wjli2 on 06-25-2008 12:42 PM

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Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
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package com.sun.javacard.samples.wallet;
import javacard.framework.*;
public class Wallet extends Applet {
/* constants declaration */
// code of CLA byte in the command APDU header
final static byte Wallet_CLA =(byte)0x80;
// codes of INS byte in the command APDU header
final static byte VERIFY = (byte) 0x20;
final static byte CREDIT = (byte) 0x30;
final static byte DEBIT = (byte) 0x40;
final static byte GET_BALANCE = (byte) 0x50;
// maximum balance
final static short MAX_BALANCE = 0x7FFF;
// maximum transaction amount
final static byte MAX_TRANSACTION_AMOUNT = 127;
// maximum number of incorrect tries before the
// PIN is blockedd
final static byte PIN_TRY_LIMIT =(byte)0x03;
// maximum size PIN
final static byte MAX_PIN_SIZE =(byte)0x08;
// signal that the PIN verification failed
final static short SW_VERIFICATION_FAILED =
0x6300;
// signal the the PIN validation is required
// for a credit or a debit transaction
final static short SW_PIN_VERIFICATION_REQUIRED =
0x6301;
// signal invalid transaction amount
// amount > MAX_TRANSACTION_AMOUNT or amount < 0
final static short SW_INVALID_TRANSACTION_AMOUNT = 0x6A83;
// signal that the balance exceed the maximum
final static short SW_EXCEED_MAXIMUM_BALANCE = 0x6A84;
// signal the the balance becomes negative
final static short SW_NEGATIVE_BALANCE = 0x6A85;
/* instance variables declaration */
OwnerPIN pin;
short balance;
private Wallet (byte[] bArray,short bOffset,byte bLength) {
// It is good programming practice to allocate
// all the memory that an applet needs during
// its lifetime inside the constructor
pin = new OwnerPIN(PIN_TRY_LIMIT, MAX_PIN_SIZE);
byte iLen = bArray[bOffset]; // aid length
bOffset = (short) (bOffset+iLen+1);
byte cLen = bArray[bOffset]; // info length
bOffset = (short) (bOffset+cLen+1);
byte aLen = bArray[bOffset]; // applet data length
// The installation parameters contain the PIN
// initialization value
pin.update(bArray, (short)(bOffset+1), aLen);
register();
} // end of the constructor
public static void install(byte[] bArray, short bOffset, byte bLength) {
// create a Wallet applet instance
new Wallet(bArray, bOffset, bLength);
} // end of install method
public boolean select() {
// The applet declines to be selected
// if the pin is blocked.
if ( pin.getTriesRemaining() == 0 )
return false;
return true;
}// end of select method
public void deselect() {
// reset the pin value
pin.reset();
public void process(APDU apdu) {
// APDU object carries a byte array (buffer) to
// transfer incoming and outgoing APDU header
// and data bytes between card and CAD
// At this point, only the first header bytes
// [CLA, INS, P1, P2, P3] are available in
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// The interface javacard.framework.ISO7816
// declares constants to denote the offset of
// these bytes in the APDU buffer
byte[] buffer = apdu.getBuffer();
// check SELECT APDU command
if (apdu.isISOInterindustryCLA()) {
if (buffer[ISO7816.OFFSET_INS] == (byte)(0xA4)) {
return;
} else {
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// verify the reset of commands have the
// correct CLA byte, which specifies the
// command structure
if (buffer[ISO7816.OFFSET_CLA] != Wallet_CLA)
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
switch (buffer[ISO7816.OFFSET_INS]) {
case GET_BALANCE:
getBalance(apdu);
return;
case DEBIT:
debit(apdu);
return;
case CREDIT:
credit(apdu);
return;
case VERIFY:
verify(apdu);
return;
default:
ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
} // end of process method
private void credit(APDU apdu) {
// access authentication
if ( ! pin.isValidated() )
ISOException.throwIt(SW_PIN_VERIFICATION_REQUIRED);
byte[] buffer = apdu.getBuffer();
// Lc byte denotes the number of bytes in the
// data field of the command APDU
byte numBytes = buffer[ISO7816.OFFSET_LC];
// indicate that this APDU has incoming data
// and receive data starting from the offset
// ISO7816.OFFSET_CDATA following the 5 header
// bytes.
byte byteRead =
(byte)(apdu.setIncomingAndReceive());
// it is an error if the number of data bytes
// read does not match the number in Lc byte
if ( ( numBytes != 1 ) || (byteRead != 1) )
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
// get the credit amount
byte creditAmount = buffer[ISO7816.OFFSET_CDATA];
// check the credit amount
if ( ( creditAmount > MAX_TRANSACTION_AMOUNT)
|| ( creditAmount < 0 ) )
ISOException.throwIt(SW_INVALID_TRANSACTION_AMOUNT);
// check the new balance
if ( (short)( balance + creditAmount) > MAX_BALANCE )
ISOException.throwIt(SW_EXCEED_MAXIMUM_BALANCE);
// credit the amount
balance = (short)(balance + creditAmount);
} // end of deposit method
private void debit(APDU apdu) {
// access authentication
if ( ! pin.isValidated() )
ISOException.throwIt(SW_PIN_VERIFICATION_REQUIRED);
byte[] buffer = apdu.getBuffer();
byte numBytes =
(byte)(buffer[ISO7816.OFFSET_LC]);
byte byteRead =
(byte)(apdu.setIncomingAndReceive());
if ( ( numBytes != 1 ) || (byteRead != 1) )
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
// get debit amount
byte debitAmount = buffer[ISO7816.OFFSET_CDATA];
// check debit amount
if ( ( debitAmount > MAX_TRANSACTION_AMOUNT)
|| ( debitAmount < 0 ) )
ISOException.throwIt(SW_INVALID_TRANSACTION_AMOUNT);
// check the new balance
if ( (short)( balance - debitAmount ) < (short)0 )
ISOException.throwIt(SW_NEGATIVE_BALANCE);
balance = (short) (balance - debitAmount);
} // end of debit method
private void getBalance(APDU apdu) {
byte[] buffer = apdu.getBuffer();
// inform system that the applet has finished
// processing the command and the system should
// now prepare to construct a response APDU
// which contains data field
short le = apdu.setOutgoing();
if ( le < 2 )
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
//informs the CAD the actual number of bytes
//returned
apdu.setOutgoingLength((byte)2);
// move the balance data into the APDU buffer
// starting at the offset 0
buffer[0] = (byte)(balance >> 8);
buffer[1] = (byte)(balance & 0xFF);
// send the 2-byte balance at the offset
// 0 in the apdu buffer
apdu.sendBytes((short)0, (short)2);
} // end of getBalance method
private void verify(APDU apdu) {
byte[] buffer = apdu.getBuffer();
// retrieve the PIN data for validation.
byte byteRead = (byte)(apdu.setIncomingAndReceive());
// check pin
// the PIN data is read into the APDU buffer
// at the offset ISO7816.OFFSET_CDATA
// the PIN data length = byteRead
if ( pin.check(buffer, ISO7816.OFFSET_CDATA,
byteRead) == false )
ISOException.throwIt(SW_VERIFICATION_FAILED);
} // end of validate method
} // end of class Wallet
Any help on this would highly appreciated !! :)

Hi,
Thanks a lot for reply.But I am not sure as to how can I delete the simulator.
All I want to do is write a pin on the smart card and verify it.But I am not being able to deploy the cap file or initiate the applet.
Also for passing the pin correct me if I am wrong........ according to what you said and what I have understood
If the code is like this :
public static void install(byte[] bArray, short bOffset, byte bLength) {
// create a Wallet applet instance
new Wallet(bArray, bOffset, bLength);
} // end of install method
byte aLen = bArray[bOffset]; // applet data length
// The installation parameters contain the PIN
// initialization value
pin.update(bArray, (short)(bOffset+1), aLen);
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then I would pass it here.....
new Wallet(bArray, 1234, bLength);

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