1 files changed, 0 insertions, 460 deletions

diff --git a/src/simpleapdu/SimpleAPDU.java b/src/simpleapdu/SimpleAPDU.java
deleted file mode 100644
index 5e51221..0000000
--- a/src/simpleapdu/SimpleAPDU.java
+++ /dev/null
@@ -1,460 +0,0 @@
-package simpleapdu;
-
-import applets.EC_Consts;
-import applets.SimpleECCApplet;
-import javacard.framework.ISO7816;
-import javacard.security.CryptoException;
-import javacard.security.KeyPair;
-import org.apache.commons.cli.CommandLine;
-import org.apache.commons.cli.CommandLineParser;
-import org.apache.commons.cli.DefaultParser;
-import org.apache.commons.cli.HelpFormatter;
-import org.apache.commons.cli.Option;
-import org.apache.commons.cli.Options;
-import org.apache.commons.cli.ParseException;
-
-import javax.smartcardio.ResponseAPDU;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.util.Arrays;
-
-
-/**
- * @author Petr Svenda petr@svenda.com
- */
-public class SimpleAPDU {
-    private CardMngr cardManager = new CardMngr();
-    private DirtyLogger systemOutLogger = null;
-
-    private CommandLineParser cliParser = new DefaultParser();
-    private Options opts = new Options();
-    private static final String cliHeader = "";
-    private static final String cliFooter = "";
-
-    private final static byte SELECT_ECTESTERAPPLET[] = {(byte) 0x00, (byte) 0xa4, (byte) 0x04, (byte) 0x00, (byte) 0x0a,
-            (byte) 0x45, (byte) 0x43, (byte) 0x54, (byte) 0x65, (byte) 0x73, (byte) 0x74, (byte) 0x65, (byte) 0x72, (byte) 0x30, (byte) 0x31};
-
-    private static final byte TESTECSUPPORTALL_FP[] = {(byte) 0xB0, (byte) 0x5E, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-    private static final byte TESTECSUPPORTALL_F2M[] = {(byte) 0xB0, (byte) 0x5F, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-    private static final byte TESTECSUPPORT_GIVENALG[] = {(byte) 0xB0, (byte) 0x71, (byte) 0x00, (byte) 0x00, (byte) 0x03, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-    private static final short TESTECSUPPORT_ALG_OFFSET = 5;
-    private static final short TESTECSUPPORT_KEYLENGTH_OFFSET = 6;
-
-    private static final byte TESTECSUPPORTALL_LASTUSEDPARAMS[] = {(byte) 0xB0, (byte) 0x40, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-
-    private static final byte TESTECSUPPORTALL_FP_KEYGEN_INVALIDCURVEB[] = {(byte) 0xB0, (byte) 0x70, (byte) 0x00, (byte) 0x00, (byte) 0x05, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-    private static final short INVALIDCURVEB_NUMREPEATS_OFFSET = 5;
-    private static final short INVALIDCURVEB_CORRUPTIONTYPE_OFFSET = 7;
-    private static final short INVALIDCURVEB_REWINDONSUCCESS_OFFSET = 9;
-
-    private static final byte TESTECSUPPORT_GENERATEECCKEY[] = {(byte) 0xB0, (byte) 0x5a, (byte) 0x00, (byte) 0x00, (byte) 0x04, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
-    private static final short GENERATEECKEY_ALG_OFFSET = 5;
-    private static final short GENERATEECKEY_KEYLENGTH_OFFSET = 6;
-    private static final short GENERATEECKEY_ANOMALOUS_OFFSET = 8;
-
-
-    private void run(String[] args) {
-        try {
-            //parse cmd args
-            CommandLine cli = parseArgs(args);
-
-            //byte[] installData = new byte[10];
-            //byte[] AID = {(byte) 0x4C, (byte) 0x61, (byte) 0x62, (byte) 0x61, (byte) 0x6B, (byte) 0x41, (byte) 0x70, (byte) 0x70, (byte) 0x6C, (byte) 0x65, (byte) 0x74};
-            //cardManager.prepareLocalSimulatorApplet(AID, installData, SimpleECCApplet.class);
-
-            //do stuff
-            if (cli.hasOption("help")) {
-                HelpFormatter help = new HelpFormatter();
-                help.printHelp("SimpleAPDU", cliHeader, opts, cliFooter);
-            } else {
-                //open log(only when actually doing something)
-                String logFileName = cli.getOptionValue("output-file", String.format("ECTESTER_log_%d.log", System.currentTimeMillis()));
-                FileOutputStream stdoutStream = new FileOutputStream(logFileName);
-                systemOutLogger = new DirtyLogger(stdoutStream, true);
-
-                boolean fp = cli.hasOption("fp");
-                boolean f2m = cli.hasOption("f2m");
-                if (!fp && !f2m) {
-                    fp = true;
-                    f2m = true;
-                }
-                int genAmount = Integer.parseInt(cli.getOptionValue("generate", "0"));
-                int keyLength = Integer.parseInt(cli.getOptionValue("b", "192"));
-
-                if (cli.hasOption("generate")) {
-                    //generate EC keys
-                    if (fp) {
-                        generateECKeys(genAmount, KeyPair.ALG_EC_FP, (short) keyLength, cli.hasOption("anomalous"));
-                    }
-                    if (f2m) {
-                        generateECKeys(genAmount, KeyPair.ALG_EC_F2M, (short) keyLength, cli.hasOption("anomalous"));
-                    }
-                } else if (cli.hasOption("test")) {
-                    if (cli.hasOption("bit-size")) {
-                        //test only one bitsize
-                        if (fp) {
-                            testSupportECFp((short) keyLength);
-                        }
-                        if (f2m) {
-                            testSupportECFp((short) keyLength);
-                        }
-                    } else {
-                        //test default bit sizes
-                        testSupportECAll(fp, f2m);
-                        testFPkeyGen((short) 10, EC_Consts.CORRUPTION_ONEBYTERANDOM, true);
-                    }
-                } else {
-                    systemOutLogger.println("You need to specify one of -t / -g [num] commands.");
-                }
-
-                //close log
-                systemOutLogger.close();
-            }
-
-            //disconnect
-            cardManager.DisconnectFromCard();
-        } catch (Exception ex) {
-            if (systemOutLogger != null) {
-                systemOutLogger.println("Exception : " + ex);
-            }
-        }
-    }
-
-    private CommandLine parseArgs(String[] args) throws ParseException {
-
-        opts.addOption("h", "help", false, "show this help");
-        opts.addOption(Option.builder("g")
-                .longOpt("generate")
-                .hasArg()
-                .optionalArg(true)
-                .argName("num")
-                .desc("generate EC keys").build());
-        opts.addOption("t", "test", false, "test EC support (default)");
-        opts.addOption(Option.builder("b")
-                .longOpt("bit-size")
-                .hasArg()
-                .argName("bits")
-                .desc("set EC bit size").build());
-        opts.addOption("f2m", "use EC over binary-fields");
-        opts.addOption("fp", "user EC over prime-fields (default)");
-        opts.addOption("s", "anomalous", false, "generate anomalous (non-prime order, small pubkey order) curves");
-        opts.addOption(Option.builder("o")
-                .longOpt("output-file")
-                .hasArg()
-                .argName("file")
-                .desc("output file to log to").build());
-        return cliParser.parse(opts, args);
-    }
-
-    static short getShort(byte[] array, int offset) {
-        return (short) (((array[offset] & 0xFF) << 8) | (array[offset + 1] & 0xFF));
-    }
-
-    static void setShort(byte[] array, int offset, short value) {
-        array[offset + 1] = (byte) (value & 0xFF);
-        array[offset] = (byte) ((value >> 8) & 0xFF);
-    }
-
-    private boolean ReconnnectToCard() throws Exception {
-        if (cardManager.isConnected()) {
-            cardManager.DisconnectFromCard();
-        }
-
-        boolean result = cardManager.ConnectToCard();
-        if (result) {
-            // Select our application on card
-            cardManager.sendAPDU(SELECT_ECTESTERAPPLET);
-        }
-        return result;
-    }
-
-    private void testFPkeyGen(short numRepeats, short corruptionType, boolean bRewind) throws Exception {
-        byte[] apdu = Arrays.copyOf(TESTECSUPPORTALL_FP_KEYGEN_INVALIDCURVEB, TESTECSUPPORTALL_FP_KEYGEN_INVALIDCURVEB.length);
-        setShort(apdu, INVALIDCURVEB_NUMREPEATS_OFFSET, numRepeats);
-        setShort(apdu, INVALIDCURVEB_CORRUPTIONTYPE_OFFSET, corruptionType);
-        apdu[INVALIDCURVEB_REWINDONSUCCESS_OFFSET] = bRewind ? (byte) 1 : (byte) 0;
-
-        ReconnnectToCard();
-        ResponseAPDU resp_fp_keygen = cardManager.sendAPDU(apdu);
-        ResponseAPDU resp_keygen_params = cardManager.sendAPDU(TESTECSUPPORTALL_LASTUSEDPARAMS);
-        PrintECKeyGenInvalidCurveB(resp_fp_keygen);
-        PrintECKeyGenInvalidCurveB_lastUserParams(resp_keygen_params);
-    }
-
-    private void testSupportECGivenAlg(short keyLength, byte keyClass) throws Exception {
-        byte[] apdu = Arrays.copyOf(TESTECSUPPORT_GIVENALG, TESTECSUPPORT_GIVENALG.length);
-        apdu[TESTECSUPPORT_ALG_OFFSET] = keyClass;
-        setShort(apdu, TESTECSUPPORT_KEYLENGTH_OFFSET, keyLength);
-
-        ReconnnectToCard();
-        ResponseAPDU resp = cardManager.sendAPDU(apdu);
-        //byte[] resp = cardManager.sendAPDUSimulator(apdu);
-        PrintECSupport(resp);
-    }
-
-    private void testSupportECFp(short keyLength) throws Exception {
-        testSupportECGivenAlg(keyLength, KeyPair.ALG_EC_FP);
-    }
-
-    private void testSupportECF2m(short keyLength) throws Exception {
-        testSupportECGivenAlg(keyLength, KeyPair.ALG_EC_F2M);
-    }
-
-    private void testSupportECAll(boolean testFp, boolean testF2m) throws Exception {
-        if (testFp) {
-            testSupportECFp((short) 128);
-            testSupportECFp((short) 192);
-            testSupportECFp((short) 224);
-            testSupportECFp((short) 256);
-            testSupportECFp((short) 384);
-            testSupportECFp((short) 521);
-        }
-
-        if (testF2m) {
-            testSupportECF2m((short) 113);
-            testSupportECF2m((short) 131);
-            testSupportECF2m((short) 163);
-            testSupportECF2m((short) 193);
-        }
-    }
-
-    private void generateECKeys(int amount, byte keyClass, short keyLength, boolean anomalous) throws Exception {
-        if (cardManager.ConnectToCardSelect()) {
-            cardManager.sendAPDU(SELECT_ECTESTERAPPLET);
-
-            String keyFileName = String.format("ECKEYS_%s_%d.log", keyClass == KeyPair.ALG_EC_FP ? "fp" : "f2m", System.currentTimeMillis());
-            FileOutputStream keysFile = new FileOutputStream(keyFileName);
-
-            String message = "index;time;pubW;privS\n";
-            keysFile.write(message.getBytes());
-            byte[] gatherKeyAPDU = Arrays.copyOf(TESTECSUPPORT_GENERATEECCKEY, TESTECSUPPORT_GENERATEECCKEY.length);
-            // Prepare keypair object
-            gatherKeyAPDU[ISO7816.OFFSET_P1] = SimpleECCApplet.P1_SETCURVE;
-            gatherKeyAPDU[GENERATEECKEY_ALG_OFFSET] = keyClass;
-            setShort(gatherKeyAPDU, GENERATEECKEY_KEYLENGTH_OFFSET, keyLength);
-            gatherKeyAPDU[GENERATEECKEY_ANOMALOUS_OFFSET] = anomalous ? (byte) 1 : (byte) 0;
-
-            ResponseAPDU respGather = cardManager.sendAPDU(gatherKeyAPDU);
-            if (respGather.getSW() != ISO7816.SW_NO_ERROR) {
-                systemOutLogger.println(String.format("Card error: %x", respGather.getSW()));
-                keysFile.close();
-                return;
-            }
-
-            // Generate new keypair
-            gatherKeyAPDU[ISO7816.OFFSET_P1] = SimpleECCApplet.P1_GENERATEKEYPAIR;
-            int counter = 0;
-            while (true) {
-                counter++;
-                long elapsed = -System.nanoTime();
-                respGather = cardManager.sendAPDU(gatherKeyAPDU);
-                elapsed += System.nanoTime();
-
-                if (respGather.getSW() != ISO7816.SW_NO_ERROR) {
-                    systemOutLogger.println(String.format("Card error: %x", respGather.getSW()));
-                    break;
-                }
-                byte[] data = respGather.getData();
-                int offset = 0;
-                String pubKeyW = "";
-                String privKeyS = "";
-                if (data[offset] == EC_Consts.TAG_ECPUBKEY) {
-                    offset++;
-                    short len = getShort(data, offset);
-                    offset += 2;
-                    pubKeyW = CardMngr.bytesToHex(data, offset, len, false);
-                    offset += len;
-                }
-                if (data[offset] == EC_Consts.TAG_ECPRIVKEY) {
-                    offset++;
-                    short len = getShort(data, offset);
-                    offset += 2;
-                    privKeyS = CardMngr.bytesToHex(data, offset, len, false);
-                    offset += len;
-                }
-
-                message = String.format("%d;%d;%s;%s\n", counter, elapsed / 1000000, pubKeyW, privKeyS);
-                keysFile.write(message.getBytes());
-
-                this.systemOutLogger.flush();
-                keysFile.flush();
-
-                //stop when we have enough keys, go on forever with 0
-                if (counter >= amount && amount != 0)
-                    break;
-            }
-            keysFile.close();
-        }
-    }
-
-    private static String getPrintError(short code) {
-        if (code == ISO7816.SW_NO_ERROR) {
-            return "OK\t(0x9000)";
-        } else {
-            String codeStr = "unknown";
-            if (code == CryptoException.ILLEGAL_VALUE) {
-                codeStr = "ILLEGAL_VALUE";
-            }
-            if (code == CryptoException.UNINITIALIZED_KEY) {
-                codeStr = "UNINITIALIZED_KEY";
-            }
-            if (code == CryptoException.NO_SUCH_ALGORITHM) {
-                codeStr = "NO_SUCH_ALG";
-            }
-            if (code == CryptoException.INVALID_INIT) {
-                codeStr = "INVALID_INIT";
-            }
-            if (code == CryptoException.ILLEGAL_USE) {
-                codeStr = "ILLEGAL_USE";
-            }
-            if (code == SimpleECCApplet.SW_SKIPPED) {
-                codeStr = "skipped";
-            }
-            if (code == SimpleECCApplet.SW_KEYPAIR_GENERATED_INVALID) {
-                codeStr = "SW_KEYPAIR_GENERATED_INVALID";
-            }
-            if (code == SimpleECCApplet.SW_INVALID_CORRUPTION_TYPE) {
-                codeStr = "SW_INVALID_CORRUPTION_TYPE";
-            }
-            if (code == SimpleECCApplet.SW_SIG_VERIFY_FAIL) {
-                codeStr = "SW_SIG_VERIFY_FAIL";
-            }
-            return String.format("fail\t(%s,\t0x%4x)", codeStr, code);
-        }
-    }
-
-    enum ExpResult {
-        SHOULD_SUCCEED,
-        MAY_FAIL,
-        MUST_FAIL
-    }
-
-    private int VerifyPrintResult(String message, byte expectedTag, byte[] buffer, int bufferOffset, ExpResult expRes) {
-        if (bufferOffset >= buffer.length) {
-            systemOutLogger.println("   No more data returned");
-        } else {
-            if (buffer[bufferOffset] != expectedTag) {
-                systemOutLogger.println("   ERROR: mismatched tag");
-                assert (buffer[bufferOffset] == expectedTag);
-            }
-            bufferOffset++;
-            short resCode = getShort(buffer, bufferOffset);
-            bufferOffset += 2;
-
-            boolean bHiglight = false;
-            if ((expRes == ExpResult.MUST_FAIL) && (resCode == ISO7816.SW_NO_ERROR)) {
-                bHiglight = true;
-            }
-            if ((expRes == ExpResult.SHOULD_SUCCEED) && (resCode != ISO7816.SW_NO_ERROR)) {
-                bHiglight = true;
-            }
-            if (bHiglight) {
-                systemOutLogger.println(String.format("!! %-53s%s", message, getPrintError(resCode)));
-            } else {
-                systemOutLogger.println(String.format("   %-53s%s", message, getPrintError(resCode)));
-            }
-        }
-        return bufferOffset;
-    }
-
-    private void PrintECSupport(ResponseAPDU resp) {
-        PrintECSupport(resp.getData());
-    }
-
-    private void PrintECSupport(byte[] buffer) {
-        systemOutLogger.println();
-        systemOutLogger.println("### Test for support and with valid and invalid EC curves");
-        int bufferOffset = 0;
-        while (bufferOffset < buffer.length) {
-            assert (buffer[bufferOffset] == SimpleECCApplet.ECTEST_SEPARATOR);
-            bufferOffset++;
-            String ecType = "unknown";
-            if (buffer[bufferOffset] == KeyPair.ALG_EC_FP) {
-                ecType = "ALG_EC_FP";
-            }
-            if (buffer[bufferOffset] == KeyPair.ALG_EC_F2M) {
-                ecType = "ALG_EC_F2M";
-            }
-            systemOutLogger.println(String.format("%-56s%s", "EC type:", ecType));
-            bufferOffset++;
-            short keyLen = getShort(buffer, bufferOffset);
-            systemOutLogger.println(String.format("%-56s%d bits", "EC key length (bits):", keyLen));
-            bufferOffset += 2;
-
-            bufferOffset = VerifyPrintResult("KeyPair object allocation:", SimpleECCApplet.ECTEST_ALLOCATE_KEYPAIR, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            bufferOffset = VerifyPrintResult("Generate key with def curve (fails if no def):", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_DEFCURVE, buffer, bufferOffset, ExpResult.MAY_FAIL);
-            bufferOffset = VerifyPrintResult("Set valid custom curve:", SimpleECCApplet.ECTEST_SET_VALIDCURVE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            bufferOffset = VerifyPrintResult("Generate key with valid curve:", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_CUSTOMCURVE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            bufferOffset = VerifyPrintResult("ECDH agreement with valid point:", SimpleECCApplet.ECTEST_ECDH_AGREEMENT_VALID_POINT, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            bufferOffset = VerifyPrintResult("ECDH agreement with invalid point (fail is good):", SimpleECCApplet.ECTEST_ECDH_AGREEMENT_INVALID_POINT, buffer, bufferOffset, ExpResult.MUST_FAIL);
-            bufferOffset = VerifyPrintResult("ECDSA signature on random data:", SimpleECCApplet.ECTEST_ECDSA_SIGNATURE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            bufferOffset = VerifyPrintResult("Set anomalous custom curve (may fail):", SimpleECCApplet.ECTEST_SET_ANOMALOUSCURVE, buffer, bufferOffset, ExpResult.MAY_FAIL);
-            bufferOffset = VerifyPrintResult("Generate key with anomalous curve (may fail):", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_ANOMALOUSCURVE, buffer, bufferOffset, ExpResult.MAY_FAIL);
-            bufferOffset = VerifyPrintResult("ECDH agreement with small order point (fail is good):", SimpleECCApplet.ECTEST_ECDH_AGREEMENT_SMALL_DEGREE_POINT, buffer, bufferOffset, ExpResult.MUST_FAIL);
-            bufferOffset = VerifyPrintResult("Set invalid custom curve (may fail):", SimpleECCApplet.ECTEST_SET_INVALIDCURVE, buffer, bufferOffset, ExpResult.MAY_FAIL);
-            bufferOffset = VerifyPrintResult("Generate key with invalid curve (fail is good):", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_INVALIDCUSTOMCURVE, buffer, bufferOffset, ExpResult.MUST_FAIL);
-            bufferOffset = VerifyPrintResult("Set invalid field (may fail):", SimpleECCApplet.ECTEST_SET_INVALIDFIELD, buffer, bufferOffset, ExpResult.MAY_FAIL);
-            bufferOffset = VerifyPrintResult("Generate key with invalid field (fail si good):", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_INVALIDFIELD, buffer, bufferOffset, ExpResult.MUST_FAIL);
-
-            systemOutLogger.println();
-        }
-    }
-
-    private void PrintECKeyGenInvalidCurveB(ResponseAPDU resp) {
-        PrintECKeyGenInvalidCurveB(resp.getData());
-    }
-
-    private void PrintECKeyGenInvalidCurveB(byte[] buffer) {
-        systemOutLogger.println();
-        systemOutLogger.println("### Test for computation with invalid parameter B for EC curve");
-        int bufferOffset = 0;
-        while (bufferOffset < buffer.length) {
-            assert (buffer[bufferOffset] == SimpleECCApplet.ECTEST_SEPARATOR);
-            bufferOffset++;
-            String ecType = "unknown";
-            if (buffer[bufferOffset] == KeyPair.ALG_EC_FP) {
-                ecType = "ALG_EC_FP";
-            }
-            if (buffer[bufferOffset] == KeyPair.ALG_EC_F2M) {
-                ecType = "ALG_EC_F2M";
-            }
-            systemOutLogger.println(String.format("%-53s%s", "EC type:", ecType));
-            bufferOffset++;
-            short keyLen = getShort(buffer, bufferOffset);
-            systemOutLogger.println(String.format("%-53s%d bits", "EC key length (bits):", keyLen));
-            bufferOffset += 2;
-
-            short numRepeats = getShort(buffer, bufferOffset);
-            bufferOffset += 2;
-            systemOutLogger.println(String.format("%-53s%d times", "Executed repeats before unexpected error: ", numRepeats));
-
-            bufferOffset = VerifyPrintResult("KeyPair object allocation:", SimpleECCApplet.ECTEST_ALLOCATE_KEYPAIR, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            while (bufferOffset < buffer.length) {
-                bufferOffset = VerifyPrintResult("Set invalid custom curve:", SimpleECCApplet.ECTEST_SET_INVALIDCURVE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-                bufferOffset = VerifyPrintResult("Generate key with invalid curve (fail is good):", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_INVALIDCUSTOMCURVE, buffer, bufferOffset, ExpResult.MUST_FAIL);
-                if (buffer[bufferOffset] == SimpleECCApplet.ECTEST_DH_GENERATESECRET) {
-                    bufferOffset = VerifyPrintResult("ECDH agreement with invalid point (fail is good):", SimpleECCApplet.ECTEST_DH_GENERATESECRET, buffer, bufferOffset, ExpResult.MUST_FAIL);
-                }
-                bufferOffset = VerifyPrintResult("Set valid custom curve:", SimpleECCApplet.ECTEST_SET_VALIDCURVE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-                bufferOffset = VerifyPrintResult("Generate key with valid curve:", SimpleECCApplet.ECTEST_GENERATE_KEYPAIR_CUSTOMCURVE, buffer, bufferOffset, ExpResult.SHOULD_SUCCEED);
-            }
-
-            systemOutLogger.println();
-        }
-    }
-
-    private void PrintECKeyGenInvalidCurveB_lastUserParams(ResponseAPDU resp) {
-        byte[] buffer = resp.getData();
-        short offset = 0;
-        systemOutLogger.print("Last used value of B: ");
-        while (offset < buffer.length) {
-            systemOutLogger.print(String.format("%x ", buffer[offset]));
-            offset++;
-        }
-    }
-
-    public static void main(String[] args) throws IOException {
-        SimpleAPDU app = new SimpleAPDU();
-        app.run(args);
-    }
-}