Unable to delete applet.....

Question

Hi all,
I am unable to delete one applet which I have loaded in the card.
There are 2 applets, one is purse and other is loyalty. And am using shareable interface in which loyalty is the server and purse is the client. I can delete the purse applet but i can't delete the loyalty from the card.
Here is my code : There are in all 3 codes, one is purse, second is loyalty code and third is the shareable interface code. Can some one look at the code and tell me what's wrong in this programs.
package com.gemplus.examples.loyalty;
import javacard.framework.*;
import visa.openplatform.*;
public class Loyalty extends javacard.framework.Applet implements TestInterface
static byte points ;
protected Loyalty(byte[] buffer, short offset, byte length)
// data offset is used for application specific parameter.
// initialization with default offset (AID offset).
short dataOffset = offset;
if(length > 9) {
// Install parameter detail. Compliant with OP 2.0.1.
// | size | content
// |------|---------------------------
// | 1 | [AID_Length]
// | 5-16 | [AID_Bytes]
// | 1 | [Privilege_Length]
// | 1-n | [Privilege_Bytes] (normally 1Byte)
// | 1 | [Application_Proprietary_Length]
// | 0-m | [Application_Proprietary_Bytes]
// shift to privilege offset
dataOffset += (short)(1 + buffer[offset]);
// finally shift to Application specific offset
dataOffset += (short)(1 + buffer[dataOffset]);
// checks wrong data length
if(buffer[dataOffset] != 4)
// return received proprietary data length in the reason
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + offset + length - dataOffset));
// go to proprietary data
dataOffset++;
// points = 0;
// register this instance
register(buffer, (short)(offset + 1), (byte)buffer[offset]);
* Method installing the applet.
* @param bArray the array constaining installation parameters
* @param bOffset the starting offset in bArray
* @param bLength the length in bytes of the data parameter in bArray
public static void install(byte[] bArray, short bOffset, byte bLength) throws ISOException
/* applet instance creation */
new Loyalty (bArray, bOffset, (byte)bLength);
* Select method returning true if applet selection is supported.
* @return boolean status of selection.
public boolean select()
/* return status of selection */
return true;
* Deselect method.
public void deselect()
return;
public void process(APDU apdu) throws ISOException
          // check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
          ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
               apdu.setIncomingAndReceive();
          byte[] apduBuffer = apdu.getBuffer();
// writes the balance into the APDU buffer after the APDU command part
          creditPoints((byte)0x00);     
          apduBuffer[5] = (byte)(points >> 8) ;
          apduBuffer[6] = (byte)points ;
// sends the APDU response
// switches to output mode
          apdu.setOutgoing() ;
// 2 bytes to return
          apdu.setOutgoingLength((short)2) ;
// offset and length of bytes to return in the APDU buffer
          apdu.sendBytes((short)5, (short)2) ;
     public void creditPoints(byte pTobeCredited)
points += pTobeCredited;
public Shareable getShareableInterfaceObject(AID client, byte param){
          if(param != (byte)0x00)
               return null;
     return (this);
second code is :
package com.gemplus.examples.oppurse;
* Imported packages
import javacard.framework.*;
import visa.openplatform.*;
import com.gemplus.examples.loyalty.*;
public class OPPurse extends javacard.framework.Applet
// the APDU constants for all the commands.
     private final static byte INS_GET_BALANCE = (byte)0x30 ;
     private final static byte INS_DEBIT      = (byte)0x31 ;
     private final static byte INS_CREDIT      = (byte)0x32 ;
     private final static byte INS_VERIFY_PIN = (byte)0x33 ;
     private final static byte INS_SET_NAME                    = (byte)0x34 ;
     private final static byte INS_GET_NAME                    = (byte)0x35 ;
// the OP/VOP specific instruction set for mutual authentication
     private final static byte CLA_INIT_UPDATE = (byte)0x80 ;
     private final static byte INS_INIT_UPDATE = (byte)0x50 ;
     private final static byte CLA_EXTERNAL_AUTHENTICATE = (byte)0x84 ;
     private final static byte INS_EXTERNAL_AUTHENTICATE = (byte)0x82 ;
// the PIN validity flag
private boolean validPIN = false;
// SW bytes for PIN Failed condition
     // the last nibble is replaced with the number of remaining tries
     private final static short      SW_PIN_FAILED = (short)0x63C0;
     private final static short SW_FAILED_TO_OBTAIN_SIO = (short)0x63D0;
     private final static short SW_LOYALTY_APP_NOT_EXIST = (short)0x63E0;
// the illegal amount value for the exceptions.
private final static short ILLEGAL_AMOUNT = 1;
// the maximum balance in this purse.
private static final short maximumBalance = 10000;
// the current balance in this purse.
private static short balance;
/*     byte[] loyaltyAID = new byte[]{ (byte)0xA0,(byte)0x00,(byte)0x00,(byte)0x00,
          (byte)0x19,(byte)0xFF,(byte)0x00,(byte)0x00,
          (byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,
          (byte)0x00,(byte)0x00,(byte)0x02,(byte)0x02};*/
/* Security part of declarations */
// the Security Object necessary to credit the purse
private ProviderSecurityDomain securityObject = null;
// the security channel number
byte secureChannel = (byte)0xFF;
// the authentication status
private boolean authenticationDone = false;
// the secure channel status
private boolean channelOpened = false;
     private byte[] nameBuffer = new byte[6];
* Only this class's install method should create the applet object.
protected OPPurse(byte[] buffer, short offset, byte length)
// data offset is used for application specific parameter.
// initialization with default offset (AID offset).
short dataOffset = offset;
if(length > 9) {
// Install parameter detail. Compliant with OP 2.0.1.
// | size | content
// |------|---------------------------
// | 1 | [AID_Length]
// | 5-16 | [AID_Bytes]
// | 1 | [Privilege_Length]
// | 1-n | [Privilege_Bytes] (normally 1Byte)
// | 1 | [Application_Proprietary_Length]
// | 0-m | [Application_Proprietary_Bytes]
// shift to privilege offset
dataOffset += (short)( 1 + buffer[offset]);
// finally shift to Application specific offset
dataOffset += (short)( 1 + buffer[dataOffset]);
// checks wrong data length
if(buffer[dataOffset] != 2)
// return received proprietary data length in the reason
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + offset + length - dataOffset));
// go to proprietary data
dataOffset++;
} else {
// Install parameter compliant with OP 2.0.
if(length != 2)
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + length));
          // retreive the balance value from the APDU buffer
short value = (short)(((buffer[(short)(dataOffset + 1)]) & 0xFF)
          | ((buffer[dataOffset] & 0xFF) << 8));
// checks initial balance value
if(value > maximumBalance)
ISOException.throwIt(ISO7816.SW_DATA_INVALID);
          // initializes the balance with the APDU buffer contents
balance = value;
// register this instance as an installed Applet
register();
// ask the system for the Security Object associated to the Applet
securityObject = OPSystem.getSecurityDomain();
// applet is personalized and its state can change
OPSystem.setCardContentState(OPSystem.APPLET_PERSONALIZED);
// build the new ATR historical bytes
byte[] newATRHistory = new byte[]
// put "OPPurse" in historical bytes.
(byte)0x4F, (byte)0x50, (byte)0x50, (byte)0x75, (byte)0x72, (byte)0x73, (byte)0x65
// !!! ACTIVATED IF INSTALL PRIVILEGE IS "Default Selected" (0x04). !!!
// change the default ATR to a personalized's one
OPSystem.setATRHistBytes(newATRHistory, (short)0, (byte)newATRHistory.length);
* Method installing the applet.
* @param installparam the array constaining installation parameters
* @param offset the starting offset in installparam
* @param length the length in bytes of the data parameter in installparam
public static void install(byte[] installparam, short offset, byte length )
throws ISOException
// applet instance creation with the initial balance
new OPPurse(installparam, offset, length );
* Select method returning true if applet selection is supported.
* @return boolean status of selection.
public boolean select()
validPIN = false;
// reset security if used.
// In case of reset deselect is not called
reset_security();
// return status of selection
return true;
* Deselect method.
public void deselect()
// reset security if used.
reset_security();
return;
* Method processing an incoming APDU.
* @see APDU
* @param apdu the incoming APDU
* @exception ISOException with the response bytes defined by ISO 7816-4
public void process(APDU apdu) throws ISOException
// get the APDU buffer
// the APDU data is available in 'apduBuffer'
byte[] apduBuffer = apdu.getBuffer();
// the "try" is mandatory because the debit method
// can throw a javacard.framework.UserException
try
     switch(apduBuffer[ISO7816.OFFSET_INS])
case INS_VERIFY_PIN :
     verifyPIN(apdu);
break ;
case INS_GET_BALANCE :
     getBalance(apdu) ;
break ;
case INS_DEBIT :
     debit(apdu) ;
break ;
                    case INS_SET_NAME :
                         setName(apdu);
                    break;
                    case INS_GET_NAME :
                         getName(apdu);
                    break ;
case INS_CREDIT :
     credit(apdu) ;
break ;
case INS_INIT_UPDATE :
if(apduBuffer[ISO7816.OFFSET_CLA] == CLA_INIT_UPDATE)
// call initialize/update security method
     init_update(apdu) ;
else
// wrong CLA received
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
break ;
case INS_EXTERNAL_AUTHENTICATE :
if(apduBuffer[ISO7816.OFFSET_CLA] == CLA_EXTERNAL_AUTHENTICATE)
// call external/authenticate security method
     external_authenticate(apdu) ;
else
// wrong CLA received
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
break ;
case ISO7816.INS_SELECT :
break ;
default :
// The INS code is not supported by the dispatcher
     ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED) ;
break ;
     }     // end of the switch
} // end of the try
          catch(UserException e)
// translates the UserException in an ISOException.
          if(e.getReason() == ILLEGAL_AMOUNT)
throw new ISOException ( ISO7816.SW_DATA_INVALID ) ;
//- P R I V A T E M E T H O D S -
     * Handles Verify Pin APDU.
     * @param apdu APDU object
     private void verifyPIN(APDU apdu)
// get APDU data
          apdu.setIncomingAndReceive();
// get APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// check that the PIN is not blocked
if(OPSystem.getTriesRemaining() == 0)
OPSystem.setCardContentState(OPSystem.APPLET_BLOCKED);
// Pin format for OP specification
// |type(2),length|nible(1),nible(2)|nible(3),nible(4)|...|nible(n-1),nible(n)|
// get Pin length
byte length = (byte)(apduBuffer[ISO7816.OFFSET_LC] & 0x0F);
// pad the PIN ASCII value
for(byte i=length; i<0x0E; i++)
// only low nibble of padding is used
apduBuffer[ISO7816.OFFSET_CDATA + i] = 0x3F;
// fill header TAG
apduBuffer[0] = (byte)((0x02 << 4) | length);
// parse ASCII Pin code
for(byte i=0; i<0x0E; i++)
// fill bytes with ASCII Pin nibbles
if((i & 0x01) == 0)
// high nibble
apduBuffer[(i >> 1)+1] = (byte)((apduBuffer[ISO7816.OFFSET_CDATA + i] & 0x0F) << 4);
else
// low nibble
apduBuffer[(i >> 1)+1] |= (byte)(apduBuffer[ISO7816.OFFSET_CDATA + i] & 0x0F);
// verify the received PIN
// !!! WARNING PIN HAS TO BE INITIALIZED BEFORE USE !!!
if(OPSystem.verifyPin(apdu, (byte)0))
// set PIN validity flag
validPIN = true;
// if applet state is BLOCKED then restore previous state (PERSONALIZED)
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
OPSystem.setCardContentState(OPSystem.APPLET_PERSONALIZED);
return;
     // the last nibble of returned code is the number of remaining tries
          ISOException.throwIt((short)(SW_PIN_FAILED + OPSystem.getTriesRemaining()));
* Performs the "getBalance" operation on this counter.
* @param apdu The APDU to process.
private void getBalance( APDU apdu )
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
               ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// writes the balance into the APDU buffer after the APDU command part
          apduBuffer[5] = (byte)(balance >> 8) ;
          apduBuffer[6] = (byte)balance ;
// sends the APDU response
// switches to output mode
          apdu.setOutgoing() ;
// 2 bytes to return
          apdu.setOutgoingLength((short)2) ;
// offset and length of bytes to return in the APDU buffer
          apdu.sendBytes((short)5, (short)2) ;
     private void setName(APDU apdu)
          // check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
               ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
          // the operation is allowed only if master pin is validated
     if(!validPIN)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
          byte[] apduBuffer = apdu.getBuffer();
          apdu.setIncomingAndReceive();     
          for(short i=0,k=5;i<6;i++,k++)
               nameBuffer[i] = apduBuffer[k];
     }//end of setName
     private void getName(APDU apdu)
          // check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
               ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
               byte[] apduBuffer = apdu.getBuffer();
               for(short i=5, k=0;i<11;i++,k++)
                    apduBuffer=nameBuffer[k];
               apdu.setOutgoing();
               apdu.setOutgoingLength((short)6);
               apdu.sendBytes((short)5,(short)6);
     }//end of storeName
* Performs the "debit" operation on this counter.
* @param apdu The APDU to process.
* @exception ISOException If the APDU is invalid.
* @exception UserException If the amount to debit is invalid.
private void debit(APDU apdu) throws ISOException, UserException
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
               ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// the operation is allowed only if master pin is validated
     if(!validPIN)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
     // Gets the length of bytes to recieved from the terminal and receives them
// If does not receive 4 bytes throws an ISO.SW_WRONG_LENGTH exception
          if(apduBuffer[4] != 2 || apdu.setIncomingAndReceive() != 2)
          ISOException.throwIt(ISO7816.SW_WRONG_LENGTH) ;
          // Reads the debit amount from the APDU buffer
// Starts at offset 5 in the APDU buffer since the 5 first bytes
// are used by the APDU command part
          short amount = (short)(((apduBuffer[6]) & (short)0x000000FF)
| ((apduBuffer[5] << 8 ) & (short)0x0000FF00));
// tests if the debit is valid
if((balance >= amount) && (amount > 0))
// does the debit operation
balance -= amount ;
// writes the new balance into the APDU buffer
// (writes after the debit amount in the APDU buffer)
apduBuffer[7] = (byte)(balance >> 8) ;
apduBuffer[8] = (byte)balance ;
// sends the APDU response
apdu.setOutgoing() ; // Switches to output mode
apdu.setOutgoingLength((short)2) ; // 2 bytes to return
// offset and length of bytes to return in the APDU buffer
apdu.sendBytes((short)7, (short)2) ;
          /*short points = 10;
AID loyaltyID = JCSystem.lookupAID(loyaltyAID, (short)0, (byte)loyaltyAID.length);
          if(loyaltyID == null)
               ISOException.throwIt((short)(SW_LOYALTY_APP_NOT_EXIST));
          TestInterface sio = (TestInterface)(JCSystem.getAppletShareableInterfaceObject(loyaltyID, (byte)0x00));
          if(sio == null)
               ISOException.throwIt((short)(SW_FAILED_TO_OBTAIN_SIO));
          sio.creditPoints(points);*/
else
// throw a UserException with illegal amount as reason
throw new UserException(ILLEGAL_AMOUNT) ;
/* byte points = (byte)0x0A;
          //short points = 10;
AID loyaltyID = JCSystem.lookupAID(loyaltyAID, (short)0, (byte)loyaltyAID.length);
          if(loyaltyID == null)
               ISOException.throwIt((short)(SW_LOYALTY_APP_NOT_EXIST));
          TestInterface sio = (TestInterface)JCSystem.getAppletShareableInterfaceObject(loyaltyID, (byte)0x00);
          if(sio == null)
               ISOException.throwIt((short)(SW_FAILED_TO_OBTAIN_SIO));
          sio.creditPoints(points);*/
* Performs the "credit" operation on this counter. The operation is allowed only
* if master pin is validated
* @param apdu The APDU to process.
* @exception ISOException If the APDU is invalid or if the amount to credit
* is invalid.
private void credit(APDU apdu) throws ISOException
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
               ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// the operation is allowed only if master pin is validated and authentication is done
     if (!validPIN || !authenticationDone)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
          // gets the length of bytes to recieved from the terminal and receives them
// if does not receive 2 bytes throws an ISO.SW_WRONG_LENGTH exception
          if(apduBuffer[4] != 2 || apdu.setIncomingAndReceive() != 2)
throw new ISOException(ISO7816.SW_WRONG_LENGTH) ;
          // reads the credit amount from the APDU buffer
// starts at offset 5 in the APDU buffer since the 5 first bytes
// are used by the APDU command part
          short amount = (short)(((apduBuffer[6]) & (short)0x000000FF)
| ((apduBuffer[5] << 8) & (short)0x0000FF00));
// tests if the credit is valid
if(((short)(balance + amount) > maximumBalance) || (amount <= (short)0))
throw new ISOException(ISO7816.SW_DATA_INVALID) ;
else
// does the credit operation
balance += amount ;
* Performs the "init_update" security operation.
* @param apdu The APDU to process.
private void init_update( APDU apdu )
// receives data
apdu.setIncomingAndReceive();
// checks for existing active secure channel
if(channelOpened)
// close the openned security channel
try
securityObject.closeSecureChannel(secureChannel);
catch(CardRuntimeException cre2)
// channel number is invalid. this case is ignored
// set the channel flag to close
channelOpened = false;
try
// open a new security channel
secureChannel = securityObject.openSecureChannel(apdu);
// set the channel flag to open
channelOpened = true;
// get expected length
short expected = apdu.setOutgoing();
// send authentication result
// expected length forced to 0x1C
apdu.setOutgoingLength((byte)0x1C);
apdu.sendBytes(ISO7816.OFFSET_CDATA, (byte)0x1c);
catch(CardRuntimeException cre)
// no available channel or APDU is invalid
ISOException.throwIt(ISO7816.SW_CONDITIONS_NOT_SATISFIED);
* Performs the "external_authenticate" security operation.
* @param apdu The APDU to process.
private void external_authenticate( APDU apdu )
// receives data
apdu.setIncomingAndReceive();
// checks for existing active secure channel
if(channelOpened)
try
// try to authenticate the client
securityObject.verifyExternalAuthenticate(secureChannel, apdu);
// authentication succeed
authenticationDone = true;
catch(CardRuntimeException cre)
// authentication fails
// set authentication flag to fails
authenticationDone = false;
// close the openned security channel
try {
securityObject.closeSecureChannel(secureChannel);
} catch(CardRuntimeException cre2) {
// channel number is invalid. this case is ignored
// set the channel flag to close
channelOpened = false;
// send authentication result
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// send authentication result
ISOException.throwIt(ISO7816.SW_NO_ERROR);
else
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
* The "reset_security" method close an opened secure channel if exist.
* @return void.
public void reset_security()
// close the secure channel if openned.
if(secureChannel != (byte)0xFF)
try
// close the openned security channel
securityObject.closeSecureChannel(secureChannel);
catch(CardRuntimeException cre2)
// channel number is invalid. this case is ignored
// reset security parameters
secureChannel = (byte)0xFF;
channelOpened = false;
authenticationDone = false;
return;
and the 3rd code is:
package com.gemplus.examples.loyalty;
import javacard.framework.Shareable;
public interface TestInterface extends Shareable
// public void creditPoints(byte points) ;
          public void creditPoints(byte points) ;
Thanks in advance......

Answer 1

Thanks. I know they are not the same thing. A package cannot be deleted if it contains one or more applets.
I tried to delete by typing in the applet AID first, but it just doesn't work. And of course it doesn't work for package AID.
Both the package and applet AID are generated in JBuilder, which looks like this, package AID(6D 79 70 61 63 6B 61 67 31),
applet AID(6D 79 70 61 63 30 30 30 31),
instance AID(6D 79 70 61 63 30 30 30 31)
I've tried those three AIDs, it's not working.
Thanks.