Simulation using Eclipse plugin for JCOP tools

Question

Dear All,
In search for a simulation environment for java card applet development I tried to use Eclipse plugin for JCOP tools.
The samples which comes with the JCOP tools works fine but when try to debug my applet I receive the error: Wrong Data 6A 80.
Generic JCOP v2.4.1 is selected for Java Card Simulation.
Following is the JCOP Shell screen:
cm- /term "Remote|localhost:8050"
--Opening terminal
/card -a a000000003000000 -c com.ibm.jc.CardManagerresetCard with timeout: 0 (ms)
--Waiting for card...
ATR=3B F8 13 00 00 81 31 FE 45 4A 43 4F 50 76 32 34 ;.....1.EJCOPv24
31 B7 1.
IOCTL().
ATR: T=1, FI=1/DI=3 (93clk/etu), N=0, IFSC=254, BWI=4/CWI=5, Hist="JCOPv241"
=> 00 A4 04 00 08 A0 00 00 00 03 00 00 00 00 ..............
(908058 nsec)
<= 6F 65 84 08 A0 00 00 00 03 00 00 00 A5 59 9F 65 oe...........Y.e
01 FF 9F 6E 06 47 91 92 18 00 00 73 4A 06 07 2A ...n.G.....sJ..*
86 48 86 FC 6B 01 60 0C 06 0A 2A 86 48 86 FC 6B .H..k.`...*.H..k
02 02 01 01 63 09 06 07 2A 86 48 86 FC 6B 03 64 ....c...*.H..k.d
0B 06 09 2A 86 48 86 FC 6B 04 02 15 65 0B 06 09 ...*.H..k...e...
2B 85 10 86 48 64 02 01 03 66 0C 06 0A 2B 06 01 +...Hd...f...+..
04 01 2A 02 6E 01 02 90 00 ..*.n....
Status: No Error
cm> set-key 255/1/DES-ECB/404142434445464748494a4b4c4d4e4f 255/2/DES-ECB/404142434445464748494a4b4c4d4e4f 255/3/DES-ECB/404142434445464748494a4b4c4d4e4f
cm> init-update 255
=> 80 50 00 00 08 B1 04 15 2B 41 3F 62 AB 00 .P......+A?b..
(2668 usec)
<= 00 00 F9 02 71 E3 BB AD BD CD FF 02 00 00 3D 02 ....q.........=.
9C 31 C7 89 AD 44 8E 13 17 15 2E 5A 90 00 .1...D.....Z..
Status: No Error
cm> ext-auth plain
=> 84 82 00 00 10 CE 6C DC D2 8C BE 5E 33 EC 58 D0 ......l....^3.X.
57 3A 52 D2 24 W:R.$
(2288 usec)
<= 90 00 ..
Status: No Error
cm> delete -r a00000006203010c04
=> 80 E4 00 80 0B 4F 09 A0 00 00 00 62 03 01 0C 04 .....O.....b....
00 .
(1084 usec)
<= 6A 88 j.
Status: Reference data not found
jcshell: Error code: 6a88 (Reference data not found)
jcshell: Wrong response APDU: 6A88
Ignoring expected error
cm> upload -d -b 250 "D:\JCOP\eclipse\projects\DigitalTachograph\bin\digitaltachograph\javacard\digitaltachograph.cap"
=> 80 E6 02 00 16 09 A0 00 00 00 62 03 01 0C 04 08 ..........b.....
A0 00 00 00 03 00 00 00 00 00 00 00 ............
(2100 usec)
<= 00 90 00 ...
Status: No Error
=> 80 E8 00 00 FA C4 82 84 42 01 00 25 DE CA FF ED ........B..%....
02 02 04 00 01 09 A0 00 00 00 62 03 01 0C 04 11 ..........b.....
64 69 67 69 74 61 6C 74 61 63 68 6F 67 72 61 70 digitaltachograp
68 02 00 21 00 25 00 21 00 0E 00 29 03 3E 00 CD h..!.%.!...).>..
23 D2 01 BB 04 44 00 00 09 E3 4B E5 00 11 00 05 #....D....K.....
01 A2 04 01 00 04 00 29 04 00 01 07 A0 00 00 00 .......)........
62 00 01 02 01 07 A0 00 00 00 62 01 01 02 01 07 b.........b.....
A0 00 00 00 62 01 02 02 01 07 A0 00 00 00 62 02 ....b.........b.
01 03 00 0E 01 0A A0 00 00 00 62 03 01 0C 04 01 ..........b.....
01 DF 06 00 CD 00 00 00 80 00 00 FF 00 01 00 00 ................
00 01 81 03 13 00 12 07 03 00 00 02 01 03 06 0B ................
8C 81 00 00 00 80 00 0B 00 0B 01 01 00 00 0B F9 ................
00 80 00 11 00 0F 01 01 00 10 0E A9 0D D4 0D F7 ................
0E 07 0E 18 0E 26 0E 35 0E 44 0E 50 0E 72 0E 81 .....&.5.D.P.r..
0E 90 0E 9B 0E F5 11 05 11 1A 11 50 00 80 00 05 ...........P....
00 04 01 04 00 01 13 AF 13 B5 13 BA 14 0C 13 00 ................
(6775 usec)
<= 6A 80 j.
Status: Wrong data
jcshell: Error code: 6a80 (Wrong data)
jcshell: Wrong response APDU: 6A80
Unexpected error; aborting execution
I will be very happy if you can help me. I am desperately in need of a working debugging environment.
Thanks in advance!
Kind regards,
Mehmet

Answer 1

     * Processes incoming READ_BINARY APDUs. Returns data of the currently
     * selected file.
     * @param apdu   where the offset is carried in header bytes p1 and p2.
     * @param le  expected length by terminal
     * @return length of the response APDU
    private short processReadBinary(APDU apdu, boolean protectedApdu,  short leUnprotected) {
        if (!hasFileSelected()) {
            ISOException.throwIt(SW_CONDITIONS_NOT_SATISFIED);
        byte[] buffer = apdu.getBuffer();
        // retrieve p1p2 from apdu buffer
        byte p1 = buffer[OFFSET_P1];
        byte p2 = buffer[OFFSET_P2];
        short offset = Util.makeShort(p1, p2);     // offset encoded in P1/P2, 15 lowest bit
        // offset encoded in P1/P2, 15 lowest bit
        // check if le != 0 <-- no response expected
        if (leUnprotected == 0) {
            ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
        if (selectedFile == null) {
            ISOException.throwIt(ISO7816.SW_FILE_NOT_FOUND);
        if ((selectedFile.getAccessConditions() & READ_REQUIRES_SM) == READ_REQUIRES_SM) {
            if(!protectedApdu)
               ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
        short fileSize = (short) selectedFile.getFileLength();
        // check offset
        if (offset >= fileSize) {
            ISOException.throwIt(ISO7816.SW_INCORRECT_P1P2);
        // check expected length
        if ((short) (offset + leUnprotected) > fileSize) {
            ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
            //ISOException.throwIt(SW_TAMAM);
        short bufferOffset = 0;
        crypto.setEncryptionStatus(isSelectedFileEncrypted());
        if (protectedApdu) {
            bufferOffset = crypto.getApduBufferOffsetDT(leUnprotected);
            if(isSelectedFileEncrypted())
               bufferOffset = crypto.getApduBufferOffset(leUnprotected);
            apdu.setOutgoing();
        Util.arrayCopyNonAtomic(selectedFile.getData(), offset, buffer, bufferOffset, leUnprotected);
        return leUnprotected;
     * Processes and UPDATE_BINARY apdu. Writes data in the currently selected
     * file.
     * @param apdu
     *            carries the offset where to write date in header bytes p1 and
     *            p2.
    private void processUpdateBinary(APDU apdu, boolean protectedApdu) {
        if (!hasFileSelected() || isLocked()) {
            ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
        if ((selectedFile.getAccessConditions() & DigitalTachograph.UPDATE_ALW) != DigitalTachograph.UPDATE_ALW) {
            if ((selectedFile.getAccessConditions() & DigitalTachograph.UPDATE_REQUIRES_SM) != DigitalTachograph.UPDATE_REQUIRES_SM) {
                ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
                return;
            }else if(!protectedApdu){
                    ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
        byte[] buffer = apdu.getBuffer();
        byte p1 = buffer[OFFSET_P1];
        byte p2 = buffer[OFFSET_P2];
        short offset = Util.makeShort(p1, p2);
        short readCount = (short) (buffer[ISO7816.OFFSET_LC] & 0xff);
        //if (!protectedApdu){
            readCount = apdu.setIncomingAndReceive();
        while (readCount > 0) {
            selectedFile.writeData(offset, buffer, OFFSET_CDATA, readCount);
            offset += readCount;
            readCount = apdu.receiveBytes(ISO7816.OFFSET_CDATA);
    private short processInternalAuthenticate(APDU apdu , boolean protectedApdu) throws CryptoException {
        byte[] buffer = apdu.getBuffer();
        short lc = (short) (buffer[OFFSET_LC] & 0xFF);
        if (lc != (short) (KID_LENGTH * 2)) {
            ISOException.throwIt(SW_WRONG_LENGTH);
        if (apdu.setIncomingAndReceive() != lc) {
            ISOException.throwIt(ISO7816.SW_WRONG_DATA);
        // Check if VU.CHR maches the one of the selected certificate on the card
        if (Util.arrayCompare(buffer, (short) (OFFSET_CDATA + KID_LENGTH), keyStore.selected_KID, (short) 0, KID_LENGTH) != 0) {
            ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
        if (Util.arrayCopyNonAtomic(buffer, OFFSET_CDATA, Rnd1, (short) 0, (short) 8) != (short) 8) { // Receive Rnd1
            ISOException.throwIt(ISO7816.SW_WRONG_DATA);
        // Hash(PRnd2||K1||Rnd1||VU.CHR)
        random.generateData(PRnd2, (short) 0, (short) 90);
        random.generateData(K1, (short) 0, (short) 16);
        crypto.shaDigest.update(PRnd2, (short) 0, (short) 90); // PRnd2
        crypto.shaDigest.update(K1, (short) 0, (short) 16); // PRnd2||K1
        crypto.shaDigest.doFinal(buffer, OFFSET_CDATA, lc, digest, (short) 0); //Rnd1||VU.CHR
        BigNumber mod = new BigNumber((short) 128);
        mod.init(keyStore.Card_PubMod, (short) 0, (short) keyStore.Card_PubMod.length, BigNumber.FORMAT_HEX);
        mod.subtract(signed, (short) 0, (short) 128, BigNumber.FORMAT_HEX);
        if (mod.compareTo(signed, (short) 0, (short) 128, BigNumber.FORMAT_HEX) == -1) {
            mod.toBytes(signed, (short) 0, (short) 128, BigNumber.FORMAT_HEX);
        // To be added: if the selected private key is considered corrupted, the processing state returned is '6400' or '6581'.
        signed[0] = (byte) 0x6A;
        Util.arrayCopyNonAtomic(PRnd2, (short) 0, signed, (short) 1, (short) 90);
        Util.arrayCopyNonAtomic(K1, (short) 0, signed, (short) 91, (short) 16);
        Util.arrayCopyNonAtomic(digest, (short) 0, signed, (short) 107, (short) 20);
        signed[127] = (byte) 0xBC;
        if (!keyStore.cardPrivateKey.isInitialized()) {
            CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
        try {
            crypto.rsaSigner.init(keyStore.cardPrivateKey, Signature.MODE_SIGN);
            crypto.rsaSigner.doFinal(signed, (short) 0, (short) 128, signed, (short) 0);
        } catch (Exception e) {
            ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
        if (!keyStore.selectedPublicKey.isInitialized()) {
            CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
        try {
            crypto.rsaCipher.init(keyStore.selectedPublicKey, Cipher.MODE_ENCRYPT);
            crypto.rsaCipher.doFinal(signed, (short) 0, (short) 128, signed, (short) 0);
        } catch (Exception e) {
            ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
        apdu.setOutgoing();
        Util.arrayCopyNonAtomic(signed, (short) 0, buffer, (short) 0, (short) 128);
        return (short) signed.length;
    private void processExternalAuthenticate(APDU apdu) {
        short equipmentType = 0;
        if (keyStore.Selected_Cert != null) {
            equipmentType = (short) keyStore.Selected_Cert.CHA[6]; // check equipment type
        if (equipmentType != (short) 1 && equipmentType != (short) 2 && equipmentType != (short) 3 && equipmentType != (short) 4 && equipmentType != (short) 6) {
            ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED); // Instead of 6F00 throw a more meaningfull SW in case CHA is not valid.
        if (Util.arrayCompare(keyStore.Selected_Cert.CHA, (short) 0, TACHOGRAPH_AID, (short) 0, (short) 6) != 0) {
            ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED);
        byte[] buffer = apdu.getBuffer();
        byte p1 = (byte) (buffer[OFFSET_P1] & 0xff);
        byte p2 = (byte) (buffer[OFFSET_P2] & 0xff);
        if (p1 != 0 || p2 != 0) {
            ISOException.throwIt(SW_WRONG_P1P2);
        short lc = (short) (buffer[OFFSET_LC] & 0xFF);
        if (lc != (short) (128)) {
            ISOException.throwIt(SW_WRONG_LENGTH);
        if (apdu.setIncomingAndReceive() != lc) {
            ISOException.throwIt(ISO7816.SW_WRONG_DATA);
        Util.arrayCopyNonAtomic(buffer, OFFSET_CDATA, signed, (short) 0, (short) 128); // receive the cryptogram from the VU
        // decrypt the encrypted message with the card private key
        try {
            crypto.rsaCipher.init(keyStore.cardPrivateKey, Cipher.MODE_DECRYPT);
            crypto.rsaCipher.doFinal(signed, (short) 0, (short) 128, signed, (short) 0);
        } catch (Exception e) {
            ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
        // verify the signature with the VU public key
        try {
            crypto.rsaCipher.init(keyStore.selectedPublicKey, Signature.MODE_VERIFY); // Cipher.MODE_ENCRYPT
            crypto.rsaCipher.doFinal(signed, (short) 0, (short) 128, signed, (short) 0);
        } catch (Exception e) {
            ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
        if (signed[0] != (byte) 0x6A || signed[127] != (byte) 0xBC) {
            ISOException.throwIt(Util.makeShort(signed[0], signed[127]));
        try {
            verifyCardCertificates();
            Util.arrayCopyNonAtomic(signed, (short) 1, preDigest, (short) 0, (short) 106); // accumulate preDigest
            Util.arrayCopyNonAtomic(Rnd3, (short) 0, preDigest, (short) 106, (short) 8); // accumulate preDigest
            Util.arrayCopyNonAtomic(keyStore.Card_Cert.CHR, (short) 0, preDigest, (short) 114, (short) 8); // accumulate preDigest
            Util.arrayCopyNonAtomic(signed, (short) 91, K2, (short) 0, (short) 16); // receive K2 value
            crypto.shaDigest.update(signed, (short) 1, (short) 106); // PRnd4||K2
            crypto.shaDigest.update(Rnd3, (short) 0, (short) 8); // Rnd3
            crypto.shaDigest.doFinal(keyStore.Card_Cert.CHR, (short) 0, (short) 8, digest, (short) 0); //||Card.CHR
        } catch (Exception e) {
            ISOException.throwIt(SW_TAMAM);
        if (Util.arrayCompare(signed, (short) 107, digest, (short) 0, (short) 20) != 0) {
            ISOException.throwIt(SW_TAMAM);
        volatileState[0] |= MUTUAL_AUTHENTICATED;
        try {
            DTUtil.xor(K1, (short) 0, K2, (short) 0, KaKb, (short) 0, (short) 16);
            Util.arrayCopyNonAtomic(Rnd3, (short) 4, SSC, (short) 0, (short) 4); // tail of Rnd3
            Util.arrayCopyNonAtomic(Rnd1, (short) 4, SSC, (short) 4, (short) 4); // tail of Rnd1
        } catch (Exception e) {
            ISOException.throwIt(SW_TAMAM);
        try {
            keyStore.setKey_Ka(KaKb, (short) 0);
            keyStore.setKey_Kb(KaKb, (short) 8);
            keyStore.setSecureMessagingKeys(KaKb, (short) 0, KaKb, (short) 0);
        } catch (Exception e) {
            ISOException.throwIt(SW_TAMAM_DEGIL);
        return;
    private short returnPreDigest(APDU apdu) {
        byte[] buffer = apdu.getBuffer();
        apdu.setOutgoing();
        Util.arrayCopyNonAtomic(preDigest, (short) 0, buffer, (short) 0, (short) 122);
        return (short)preDigest.length;
    private short returnDigest(APDU apdu) {
        byte[] buffer = apdu.getBuffer();
        apdu.setOutgoing();
        Util.arrayCopyNonAtomic(digest, (short) 0, buffer, (short) 0, (short) 20);
        return (short)digest.length;
    private short returnOriginalText(APDU apdu) {
        byte[] buffer = apdu.getBuffer();
        apdu.setOutgoing();
        Util.arrayCopyNonAtomic(signed, (short) 0, buffer, (short) 0, (short) 128);
        return (short)signed.length;
    private void processVerify(APDU apdu) { // Verify_CHV(Pin_Ws)
        byte[] buffer = apdu.getBuffer();
        // retrieve the PIN data for validation.
        byte byteRead = (byte) (apdu.setIncomingAndReceive());
        // 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);
        return;
    private void processPSO(APDU apdu) { // verify certificate
        byte[] buffer = apdu.getBuffer();
        byte p1 = (byte) (buffer[OFFSET_P1] & 0xff);
        byte p2 = (byte) (buffer[OFFSET_P2] & 0xff);
        short lc = (short) (buffer[ISO7816.OFFSET_LC] & 0xFF);
        if (p1 == (byte) 0x00 && p2 == P2_VERIFYCERT) {
            if (lc != TACHO_CERT_LENGTH) {
                ISOException.throwIt(SW_WRONG_LENGTH);
            if (apdu.setIncomingAndReceive() != lc) {
                ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
            try { // copy the certificate to be verified from APDU buffer to cert object
                Util.arrayCopyNonAtomic(buffer, OFFSET_CDATA, cert, (short) 0, lc);
            } catch (Exception e) {
                ISOException.throwIt(SW_TAMAM);
            if (Util.arrayCompare(keyStore.selected_KID, (short) 0, keyStore.ERCA_KID, (short) 0, KID_LENGTH) == 0) {
                keyStore.VUCA_Cert.verifyCert(cert, keyStore.selectedPublicKey, keyStore.selected_KID);
            } else if (Util.arrayCompare(keyStore.selected_KID, (short) 0, keyStore.VUCA_Cert.CHR, (short) 0, KID_LENGTH) == 0) {
                keyStore.VU_Cert.verifyCert(cert, keyStore.selectedPublicKey, keyStore.selected_KID);
            } else {
                ISOException.throwIt(SW_CERT_VERIFICATION_FAILED); // Selected keyId, with MSE, is neither ERCA_KID nor VUCA_KID
        } else {
            ISOException.throwIt(SW_CERT_VERIFICATION_FAILED);
        return;
    private short processGetChallenge(APDU apdu, boolean protectedApdu) {
        byte[] buffer = apdu.getBuffer();
        byte p1 = (byte) (buffer[OFFSET_P1] & 0xff);
        byte p2 = (byte) (buffer[OFFSET_P2] & 0xff);
        if (p1 != 0 || p2 != 0) {
            ISOException.throwIt(SW_WRONG_P1P2);
        random.generateData(Rnd3, (short) 0, (short) 8);
        short Le = apdu.setOutgoing();
        if (Le != (short) 8) {
            ISOException.throwIt(SW_WRONG_LENGTH);
        Util.arrayCopyNonAtomic(Rnd3, (short) 0, buffer, (short) 0, (short) 8);
        return Le;
    private void processMSE(APDU apdu) {
        byte[] buffer = apdu.getBuffer();
        if (buffer[OFFSET_P1] == (byte) 0xC1 && buffer[OFFSET_P2] == P2_DST) {
            short lc = (short) (buffer[OFFSET_LC] & 0xFF);
            if (lc != (short) (KID_LENGTH + 2)) {
                ISOException.throwIt(SW_WRONG_LENGTH);
            if (apdu.setIncomingAndReceive() != lc) {
                ISOException.throwIt(ISO7816.SW_WRONG_DATA);
            if (buffer[OFFSET_CDATA] != (byte) 0x83) {//check the tag of the data
                ISOException.throwIt(SW_SECURE_MESSAGING_DATA_OBJECTS_MISSING);
            } else if (buffer[OFFSET_CDATA + 1] != (byte) 0x08) {
                ISOException.throwIt(SW_INCORRECT_DATA_OBJECT); // check if the key is already selected one
            } else if (Util.arrayCompare(buffer, (short) (OFFSET_CDATA + 2), keyStore.selected_KID, (short) 0, KID_LENGTH) != 0) {
                if (Util.arrayCompare(buffer, (short) (OFFSET_CDATA + 2), keyStore.ERCA_KID, (short) 0, KID_LENGTH) == 0) {// KID is EUR_KID
                    keyStore.selected_KID = keyStore.ERCA_KID;
                    keyStore.selectedPublicKey = keyStore.eurPublicKey;
                    keyStore.Selected_Cert = null; // ERCA public key is selected
                    return;
                } else if (Util.arrayCompare(buffer, (short) (OFFSET_CDATA + 2), keyStore.VUCA_Cert.CHR, (short) 0, KID_LENGTH) == 0) {// KID is MSCA_KID
                    keyStore.Selected_Cert = keyStore.VUCA_Cert;
                } else if (Util.arrayCompare(buffer, (short) (OFFSET_CDATA + 2), keyStore.VU_Cert.CHR, (short) 0, KID_LENGTH) == 0) { // KID is VU_KID
                    keyStore.Selected_Cert = keyStore.VU_Cert;
                } else {
                    ISOException.throwIt(SW_REFERENCE_DATA_NOT_FOUND);
                }// KID not found
                keyStore.selectedPublicKey = keyStore.Selected_Cert.publicKey;
                keyStore.selected_KID = keyStore.Selected_Cert.CHR;
            } else { // if the KID is already set, just return
                return;
        } else {
            ISOException.throwIt(ISO7816.SW_WRONG_P1P2);
    private void processSelectFile(APDU apdu) {
        byte[] buffer = apdu.getBuffer();
        short lc = (short) (buffer[OFFSET_LC] & 0x00FF);
        // retrieve p1p2 from apdu buffer
        byte p1 = buffer[OFFSET_P1];
        byte p2 = buffer[OFFSET_P2];
        short p1p2 = Util.makeShort(p1, p2);
        apdu.setIncomingAndReceive();
        if (p1 == 4) {
            if (lc == (short) TACHO_AID_LENGTH) {
                if (Util.arrayCompare(buffer, (short) OFFSET_CDATA, TACHOGRAPH_AID, (short) 0, (short) TACHO_AID_LENGTH) == 0) {
                    selectedFile = fileSystem.getDT();
                    fileSystem.selectDT();
                    volatileState[0] |= FILE_SELECTED;
                    return;
                } else {
                    ISOException.throwIt(ISO7816.SW_WRONG_DATA);
            } else if (lc != 2) {
                ISOException.throwIt(SW_WRONG_LENGTH);
            short fid = Util.getShort(buffer, OFFSET_CDATA);
            if (fileSystem.getFile(fid) != null) {
                selectedFile = fileSystem.getDT();
                fileSystem.selectDT();
                volatileState[0] |= FILE_SELECTED;
                return;
        } else if (p1 == 2) {
            if (lc != 2) {
                ISOException.throwIt(SW_WRONG_LENGTH);
            short fid = Util.getShort(buffer, OFFSET_CDATA);
            if (fileSystem.getFile(fid) != null) {
                selectedFile = fileSystem.getFile(fid);
                volatileState[0] |= FILE_SELECTED;
                return;
        } else {
            ISOException.throwIt(ISO7816.SW_WRONG_P1P2);
        setNoFileSelected();
        ISOException.throwIt(ISO7816.SW_FILE_NOT_FOUND);
    public static void setNoFileSelected() {
        if (hasFileSelected()) {
            volatileState[0] ^= FILE_SELECTED;
    public static boolean hasFileSelected() {
        return (volatileState[0] & FILE_SELECTED) == FILE_SELECTED;
    public static boolean hasMutuallyAuthenticated() {
        return (volatileState[0] & MUTUAL_AUTHENTICATED) == MUTUAL_AUTHENTICATED;
    static boolean isLocked() {
        return (persistentState & LOCKED) == LOCKED;
    public boolean isSelectedFileEncrypted() {
        return ((selectedFile.getAccessConditions() & DigitalTachograph.ENCRYPTED) == DigitalTachograph.ENCRYPTED);
}