Esempio n. 1
0
  protected boolean testKey() {
    String data = UID.random(24);
    byte[] bb = RSA.encode(data.getBytes(), TConn.pub_key);
    if (bb != null) {
      bb = RSA.decode(bb, TConn.pri_key);
      if (bb != null && data.equals(new String(bb))) {
        return true;
      }
    }

    return false;
  }
 private void sendRSA() {
   try {
     // print local
     cipherTextArea.append("RSAE" + rsa.getE());
     cipherTextArea.append("RSAN" + rsa.getN());
     // send the RSA stuff
     outputStrm.writeObject("RSAE" + rsa.getE());
     outputStrm.writeObject("RSAN" + rsa.getN());
     outputStrm.flush();
   } catch (IOException e) {
     chatTextWindow.append(" Something messed up!\n");
   }
 }
Esempio n. 3
0
  /** Inits the. */
  public static synchronized void init() {
    if (inited) {
      return;
    }

    _conf = Config.getConfig();

    /** initialize app command */
    Command.init();

    /** initialize the RSA key, hardcode 2048 bits */
    TConn.pub_key = SystemConfig.s("pub_key", null);
    if (TConn.pub_key == null) {
      Key k = RSA.generate(2048);
      TConn.pri_key = k.pri_key;
      TConn.pub_key = k.pub_key;

      /** set back in database */
      SystemConfig.setConfig("pri_key", TConn.pri_key);
      SystemConfig.setConfig("pub_key", TConn.pub_key);
    } else {

      /** get from the database */
      TConn.pri_key = SystemConfig.s("pri_key", null);
    }

    inited = true;
  }
  private String decrypting(String message) {
    int i = 0;
    while (message.substring(i, i + 1).compareTo(":") != 0 && i + 1 < message.length()) {
      i++;
    }
    i += 2;
    if (i + 2 >= message.length()) {
      return message;
    }

    String cMessage = message.substring(i);
    // System.out.println(cMessage);
    switch (cSelect) {
      case 0:
        return message.substring(0, i) + cMessage;
      case 1:
        return message.substring(0, i)
            + decryptCaesar(cMessage, Integer.parseInt(textFieldShift.getText()));
      case 2:
        vig.setKey(textFieldVigPass.getText());
        return message.substring(0, i) + vig.decode(cMessage);
      case 3:
        tea.setKey(textFieldTEA.getText().getBytes());
        return message.substring(0, i) + tea.decrypt(cMessage);
      case 4:
        return message.substring(0, i) + rsa.decrypt(cMessage);
    }
    return message;
  }
  private void decodActionPerformed(
      java.awt.event.ActionEvent evt) { // GEN-FIRST:event_decodActionPerformed
    // TODO add your handling code here:

    String outt = rsa.desencripta(textoCifrado);
    msj.setText(outt);
  } // GEN-LAST:event_decodActionPerformed
Esempio n. 6
0
  private int decryptKey(int[] a, int i) {
    long v;

    v = a[i + 0];
    v = a[i + 1] + v * MAX;
    v = a[i + 2] + v * MAX;
    v = a[i + 3] + v * MAX;

    return (int) rsa_.decrypt(v);
  }
Esempio n. 7
0
  private void encryptKey(int k, int[] a, int i) {
    long v = rsa_.encrypt(k);

    a[i + 3] = (int) (v % MAX);
    v /= MAX;
    a[i + 2] = (int) (v % MAX);
    v /= MAX;
    a[i + 1] = (int) (v % MAX);
    v /= MAX;
    a[i + 0] = (int) (v % MAX);
  }
Esempio n. 8
0
  public String getEncryptedSharedSecret(String sharedSecret) {
    byte[] bytes = sharedSecret.getBytes();
    int i = 0;
    String encSecret = "";
    BigInteger givenMessage, p1, q1, e1;
    p1 = new BigInteger("13");
    q1 = new BigInteger("19");
    e1 = new BigInteger("5");
    RSA rsa = new RSA(p1, q1, e1);

    while (i < bytes.length) {
      givenMessage = BigInteger.valueOf(bytes[i]);
      BigInteger encryptMessage =
          rsa.rsaEncrypt(givenMessage, new BigInteger("5"), new BigInteger("247"));
      encSecret = encSecret + new String(encryptMessage.toByteArray());
      i++;
    }

    return encSecret;
  }
 private void jButton1ActionPerformed(
     java.awt.event.ActionEvent evt) { // GEN-FIRST:event_jButton1ActionPerformed
   // TODO add your handling code here:
   String num1, num2;
   long num = 0;
   objR = new RSA();
   num1 = String.valueOf(objR.gen_Primo());
   num2 = String.valueOf(objR.gen_Primo());
   prime_1.setText(num1);
   prime_2.setText(num2);
 } // GEN-LAST:event_jButton1ActionPerformed
  private void verificarActionPerformed(
      java.awt.event.ActionEvent evt) { // GEN-FIRST:event_verificarActionPerformed
    // TODO add your handling code here:
    String msj = "";
    objR = new RSA();
    long num = Long.parseLong(verNum.getText());

    if (objR.miller_rabin(num)) {
      mensaje.setText("El numero " + num + " es un numero Primo");
    } else {
      mensaje.setText("El numero " + num + " es un numero Compuesto");
    }
  } // GEN-LAST:event_verificarActionPerformed
  private void keepChatting() throws IOException {
    String message = "Connected";
    sendMessage(message);
    canUserType(true);
    btnSend.setEnabled(true);
    do {
      try {
        message = (String) inputStrm.readObject();
        if (waitingOnRSA) {
          // System.out.println(message);
          // System.out.println(message.substring(0, 4));
          if (message.substring(0, 4).compareToIgnoreCase("RSAE") == 0) {
            // System.out.println(message.substring(4));
            rsaE = new BigInteger(message.substring(4));
            rsa.setE(rsaE);
            // System.out.println("E");
          }
          if (message.substring(0, 4).compareToIgnoreCase("RSAN") == 0) {
            rsaN = new BigInteger(message.substring(4));
            rsa.setN(rsaN);
            waitingOnRSA = false;
            showMessage("RSA ENABLED\n");
            // System.out.println("N");
          }
        }
        if (message.substring(0, 3).compareTo("RSA") != 0) {
          showDecryptMessage(message);
        }
      } catch (ClassNotFoundException e) {
        showMessage("WTF?");
      } catch (SocketException e) {
        safelyShutDown();
      }

    } while (!message.equals("END"));
  }
  private void jButton2ActionPerformed(
      java.awt.event.ActionEvent evt) { // GEN-FIRST:event_jButton2ActionPerformed

    String textoPlano = textoC.getText();
    textoCifrado = rsa.encripta(textoPlano);

    for (int i = 0; i < textoCifrado.length; i++) {
      out += textoCifrado[i].toString();

      textoE.setText(out);
    }

    textoE.setText(out);
    //

  } // GEN-LAST:event_jButton2ActionPerformed
Esempio n. 13
0
  /**
   * Instantiates a new MDC server.
   *
   * @param host the host
   * @param port the port
   */
  protected MDCServer(String host, int port) {
    _conf = Config.getConfig();

    address = (host == null) ? new InetSocketAddress(port) : new InetSocketAddress(host, port);

    /** initialize app command */
    Command.init();

    /** initialize the connection center */
    TConnCenter.init(_conf, port);

    synchronized (_conf) {
      /** load public key from database */
      TConn.pub_key = SystemConfig.s("pub_key", null);
      TConn.pri_key = SystemConfig.s("pri_key", null);

      /** initialize the RSA key, hardcode 2048 bits */
      if (TConn.pub_key == null
          || TConn.pri_key == null
          || "".equals(TConn.pub_key)
          || "".equals(TConn.pri_key)) {
        /** print out the old state */
        log.warn(
            "the pub_key or pri_key missed, the old state are pub_key:["
                + TConn.pub_key
                + "], pri_key:["
                + TConn.pri_key
                + "]");

        Key k = RSA.generate(2048);
        TConn.pri_key = k.pri_key;
        TConn.pub_key = k.pub_key;

        /** print out the new public key */
        log.warn("create new RSA key pair, pub_key:[" + TConn.pub_key + ']');

        /** set back in database */
        SystemConfig.setConfig("pri_key", TConn.pri_key);
        SystemConfig.setConfig("pub_key", TConn.pub_key);
      }

      MAX_SIZE = SystemConfig.i("mdc.max_size", MAX_SIZE);
    }
  }
 private String encrypting(String message) {
   switch (cSelect) {
     case 0:
       return message;
     case 1:
       // System.out.println("." + Integer.parseInt(textFieldShift.getText()) + ".");
       return encryptCaesar(message, Integer.parseInt(textFieldShift.getText()));
     case 2:
       vig.setKey(textFieldVigPass.getText());
       return vig.encode(message);
     case 3:
       tea.setKey(textFieldTEA.getText().getBytes());
       return tea.encrypt(message);
     case 4:
       if (waitingOnRSA) {
         return message;
       } else {
         return rsa.encryptOther(message);
       }
   }
   return message;
 }
  private void buildGUI() {

    Border border = BorderFactory.createLineBorder(Color.black, 1, false);
    Border empty = new EmptyBorder(4, 4, 4, 4);
    CompoundBorder cborder = new CompoundBorder(border, empty);
    chatTextWindow.setBorder(cborder);
    jsp = new JScrollPane(chatTextWindow);

    chatPanel.add(jsp);
    sb = jsp.getVerticalScrollBar();

    inputPanel = new JPanel();
    inputPanel.setLayout(new GridLayout(0, 1, 0, 0));

    border =
        BorderFactory.createLineBorder(Color.black, 1, false); // createLineBorder(Color.BLACK);
    empty = new EmptyBorder(4, 4, 4, 4);
    cborder = new CompoundBorder(border, empty);
    userText = new JTextArea();
    userText.setToolTipText("");
    userText.setWrapStyleWord(true);
    userText.setLineWrap(true);
    userText.setBorder(cborder);
    // userText.setMargin(new Insets(20, 20, 20, 20));
    userText.setFont(new Font("Tahoma", Font.PLAIN, 13));
    // add();

    inputPanel.add(new JScrollPane(userText));

    btnSend = new JButton("Send");
    btnSend.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
            userName = nameTextField.getText();
            sendMessage(userText.getText());
            userText.setText("");
          }
        });
    btnSend.setFont(new Font("Tahoma", Font.PLAIN, 13));
    btnSend.setEnabled(false);
    JPanel panelCipher = new JPanel();
    panelCipher.setLayout(new GridLayout(0, 1, 0, 0));

    JLabel lblCiphertext = new JLabel("CipherText:");

    JTabbedPane panelChoice = new JTabbedPane(JTabbedPane.TOP);

    JPanel panelStart = new JPanel();
    panelStart.setBorder(
        new TitledBorder(
            new LineBorder(new Color(0, 0, 0)),
            "Connection",
            TitledBorder.LEADING,
            TitledBorder.TOP,
            null,
            new Color(0, 0, 0)));

    JLabel lblConversationAndPlain = new JLabel("Conversation and Plain Text:");

    lblThankYou = new JLabel("Thank you for using our Secure Instant Messager");
    lblThankYou.setHorizontalAlignment(SwingConstants.CENTER);

    lblNewLabel_1 = new JLabel("Designed and Developed by Adam Gorman and Unknown other");
    lblNewLabel_1.setHorizontalAlignment(SwingConstants.CENTER);

    GroupLayout groupLayout = new GroupLayout(getContentPane());
    groupLayout.setHorizontalGroup(
        groupLayout
            .createParallelGroup(Alignment.LEADING)
            .addGroup(
                groupLayout
                    .createSequentialGroup()
                    .addContainerGap()
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.LEADING)
                            .addComponent(
                                inputPanel,
                                GroupLayout.DEFAULT_SIZE,
                                GroupLayout.DEFAULT_SIZE,
                                Short.MAX_VALUE)
                            .addGroup(
                                groupLayout
                                    .createSequentialGroup()
                                    .addGap(10)
                                    .addComponent(lblConversationAndPlain))
                            .addComponent(chatPanel, 0, 0, Short.MAX_VALUE)
                            .addComponent(
                                panelStart,
                                GroupLayout.PREFERRED_SIZE,
                                440,
                                GroupLayout.PREFERRED_SIZE))
                    .addPreferredGap(ComponentPlacement.RELATED)
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.LEADING)
                            .addGroup(
                                groupLayout
                                    .createSequentialGroup()
                                    .addComponent(
                                        btnSend,
                                        GroupLayout.PREFERRED_SIZE,
                                        83,
                                        GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(ComponentPlacement.RELATED)
                                    .addGroup(
                                        groupLayout
                                            .createParallelGroup(Alignment.LEADING, false)
                                            .addComponent(
                                                lblNewLabel_1,
                                                GroupLayout.DEFAULT_SIZE,
                                                GroupLayout.DEFAULT_SIZE,
                                                Short.MAX_VALUE)
                                            .addComponent(
                                                lblThankYou,
                                                GroupLayout.DEFAULT_SIZE,
                                                415,
                                                Short.MAX_VALUE))
                                    .addGap(165))
                            .addGroup(
                                groupLayout
                                    .createSequentialGroup()
                                    .addGap(10)
                                    .addComponent(lblCiphertext))
                            .addGroup(
                                groupLayout
                                    .createParallelGroup(Alignment.TRAILING, false)
                                    .addComponent(panelChoice, Alignment.LEADING)
                                    .addComponent(
                                        panelCipher,
                                        Alignment.LEADING,
                                        GroupLayout.DEFAULT_SIZE,
                                        530,
                                        Short.MAX_VALUE)))
                    .addGap(41)));
    groupLayout.setVerticalGroup(
        groupLayout
            .createParallelGroup(Alignment.LEADING)
            .addGroup(
                groupLayout
                    .createSequentialGroup()
                    .addContainerGap()
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.LEADING)
                            .addComponent(
                                panelStart, GroupLayout.DEFAULT_SIZE, 101, Short.MAX_VALUE)
                            .addComponent(
                                panelChoice, GroupLayout.PREFERRED_SIZE, 101, Short.MAX_VALUE))
                    .addPreferredGap(ComponentPlacement.RELATED)
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.BASELINE)
                            .addComponent(lblCiphertext)
                            .addComponent(lblConversationAndPlain))
                    .addPreferredGap(ComponentPlacement.RELATED)
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.LEADING)
                            .addComponent(
                                panelCipher,
                                GroupLayout.DEFAULT_SIZE,
                                GroupLayout.DEFAULT_SIZE,
                                Short.MAX_VALUE)
                            .addComponent(
                                chatPanel,
                                GroupLayout.PREFERRED_SIZE,
                                434,
                                GroupLayout.PREFERRED_SIZE))
                    .addPreferredGap(ComponentPlacement.RELATED)
                    .addGroup(
                        groupLayout
                            .createParallelGroup(Alignment.LEADING)
                            .addComponent(
                                inputPanel,
                                GroupLayout.PREFERRED_SIZE,
                                48,
                                GroupLayout.PREFERRED_SIZE)
                            .addComponent(
                                btnSend, GroupLayout.PREFERRED_SIZE, 48, GroupLayout.PREFERRED_SIZE)
                            .addGroup(
                                groupLayout
                                    .createSequentialGroup()
                                    .addComponent(lblThankYou)
                                    .addPreferredGap(ComponentPlacement.RELATED)
                                    .addComponent(lblNewLabel_1)))
                    .addContainerGap()));
    panelStart.setLayout(null);

    lblIp = new JLabel("IP:");
    lblIp.setBounds(37, 59, 22, 16);
    panelStart.add(lblIp);
    lblIp.setHorizontalAlignment(SwingConstants.RIGHT);

    JLabel lblName = new JLabel("Name:");
    lblName.setBounds(10, 25, 49, 16);
    panelStart.add(lblName);
    lblName.setHorizontalAlignment(SwingConstants.RIGHT);
    lblName.setFont(new Font("Tahoma", Font.PLAIN, 13));

    nameTextField = new JTextField();
    nameTextField.setBounds(66, 22, 138, 22);
    panelStart.add(nameTextField);
    nameTextField.setText("AliceBob");
    nameTextField.setColumns(10);
    btnHost = new JButton("Host");
    btnHost.setBounds(216, 21, 97, 25);
    panelStart.add(btnHost);
    btnJoin = new JButton("Join");
    btnJoin.setBounds(216, 55, 97, 25);
    panelStart.add(btnJoin);

    ipHostTextField = new JTextField();
    ipHostTextField.setBounds(66, 56, 138, 22);
    panelStart.add(ipHostTextField);
    ipHostTextField.setText("127.0.0.1");
    ipHostTextField.setColumns(10);
    btnJoin.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
            serverIP = ipHostTextField.getText();
            btnJoin.setEnabled(false);
            btnHost.setEnabled(false);
            new Thread(
                    new Runnable() {

                      @Override
                      public void run() {
                        startRunning();
                      }
                    })
                .start();
          }
        });

    btnHost.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
            btnJoin.setEnabled(false);
            btnHost.setEnabled(false);
            new Thread(
                    new Runnable() {

                      @Override
                      public void run() {
                        StartHosting();
                      }
                    })
                .start();
          }
        });

    JPanel panel_5 = new JPanel();
    panelChoice.addTab("  Settings  ", null, panel_5, null);
    buildRadio(panel_5);

    JPanel panel_6 = new JPanel();
    panelChoice.addTab("  Caesar Shift  ", null, panel_6, null);
    panel_6.setLayout(new GridLayout(0, 1, 5, 0));

    lblShiftAmount = new JLabel("Shift Amount: ");
    lblShiftAmount.setHorizontalAlignment(SwingConstants.CENTER);
    panel_6.add(lblShiftAmount);

    textFieldShift = new JTextField();
    textFieldShift.setHorizontalAlignment(SwingConstants.CENTER);
    textFieldShift.setText("0");
    panel_6.add(textFieldShift);
    textFieldShift.setColumns(10);

    btnCShiftApply = new JButton("Apply");
    btnCShiftApply.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {}
        });
    panel_6.add(btnCShiftApply);

    scrollPane = new JScrollPane();
    sb2 = scrollPane.getVerticalScrollBar();
    panelCipher.add(scrollPane);

    cipherTextArea = new JTextArea();
    cipherTextArea.setBorder(cborder);
    scrollPane.setViewportView(cipherTextArea);
    cipherTextArea.setLineWrap(true);
    cipherTextArea.setWrapStyleWord(true);
    getContentPane().setLayout(groupLayout);
    userText.addKeyListener(
        new KeyAdapter() {
          @Override
          public void keyPressed(KeyEvent k) {
            if (k.getKeyChar() == KeyEvent.VK_ENTER) {
              userName = nameTextField.getText();
              sendMessage(userText.getText());
            }
          }

          @Override
          public void keyReleased(KeyEvent k) {
            if (k.getKeyChar() == KeyEvent.VK_ENTER) {
              userText.setText("");
            }
          }
        });
    setSize(1010, 700);

    menuBar = new JMenuBar();
    setJMenuBar(menuBar);

    JMenu mnFile = new JMenu("File");
    menuBar.add(mnFile);

    JMenuItem mntmExit = new JMenuItem("Exit");
    mntmExit.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
            safelyShutDown();
            // setVisible(false);
            // dispose();

          }
        });
    mnFile.add(mntmExit);

    panel_2 = new JPanel();
    panelChoice.addTab("  Vigenere Cipher  ", null, panel_2, null);
    panel_2.setLayout(new GridLayout(0, 1, 0, 0));

    JLabel lblSymmetricPassword = new JLabel("Symmetric password:"******"Apply");
    btnVigApply.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {}
        });
    panel_2.add(btnVigApply);

    panel_3 = new JPanel();
    panelChoice.addTab("   TEA   ", null, panel_3, null);
    panel_3.setLayout(new GridLayout(0, 1, 0, 0));

    JLabel lblSymmetricPassphrase = new JLabel("Symmetric passphrase:");
    lblSymmetricPassphrase.setHorizontalAlignment(SwingConstants.CENTER);
    panel_3.add(lblSymmetricPassphrase);

    textFieldTEA = new JTextField();
    textFieldTEA.setHorizontalAlignment(SwingConstants.CENTER);
    panel_3.add(textFieldTEA);
    textFieldTEA.setColumns(10);

    JButton btnApplyTEA = new JButton("Apply");
    btnApplyTEA.addActionListener(
        new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {}
        });
    panel_3.add(btnApplyTEA);

    panel_1 = new JPanel();
    panelChoice.addTab("   RSA   ", null, panel_1, null);
    panel_1.setLayout(null);

    lblNewLabel = new JLabel("Public (e):");
    lblNewLabel.setHorizontalAlignment(SwingConstants.RIGHT);
    lblNewLabel.setBounds(12, 13, 77, 16);
    panel_1.add(lblNewLabel);

    RSAPublicE = new JTextField();
    RSAPublicE.setText("65324");
    RSAPublicE.setBounds(101, 10, 412, 22);
    panel_1.add(RSAPublicE);
    RSAPublicE.setColumns(10);

    lblModulus = new JLabel("Modulus (N):");
    lblModulus.setHorizontalAlignment(SwingConstants.RIGHT);
    lblModulus.setBounds(12, 42, 77, 16);
    panel_1.add(lblModulus);

    RSAPublicN = new JTextField();
    RSAPublicN.setHorizontalAlignment(SwingConstants.LEFT);
    // RSAPublicN.setText("8256");
    RSAPublicN.setBounds(101, 39, 412, 22);
    panel_1.add(RSAPublicN);
    RSAPublicN.setColumns(10);

    RSAPublicE.setText(rsa.getE().toString());
    RSAPublicN.setText(rsa.getN().toString());
  }
  /** Load application settings from persistent store. */
  public void load() {
    Preferences preferences = getUnderlyingPreferences();

    // Authority certificates
    useCaCertificates = preferences.getBoolean(KSE3_USECACERTS, false);
    String cacertsPath =
        preferences.get(
            KSE3_CACERTSFILE, AuthorityCertificates.getDefaultCaCertificatesLocation().toString());
    caCertificatesFile = cleanFilePath(new File(cacertsPath));
    useWindowsTrustedRootCertificates = preferences.getBoolean(KSE3_USEWINTRUSTROOTCERTS, false);

    // Trust checks
    enableImportTrustedCertTrustCheck =
        preferences.getBoolean(KSE3_ENABLEIMPORTTRUSTEDCERTTRUSTCHECK, false);
    enableImportCaReplyTrustCheck =
        preferences.getBoolean(KSE3_ENABLEIMPORTCAREPLYTRUSTCHECK, false);

    // Key pair generation
    generateKeyPairType = KeyPairType.resolveJce(preferences.get(KSE3_KEYPAIRTYPE, RSA.jce()));
    if (generateKeyPairType == null) {
      generateKeyPairType = RSA;
    }
    int defaultKeyPairSize;
    if (generateKeyPairType == RSA) {
      defaultKeyPairSize = 2048;
    } else {
      defaultKeyPairSize = 1024; // DSA
    }
    generateKeyPairSize = preferences.getInt(KSE3_KEYPAIRSIZE, defaultKeyPairSize);

    // Secret key generation
    generateSecretKeyType = SecretKeyType.resolveJce(preferences.get(KSE3_SECKEYTYPE, AES.jce()));
    if (generateSecretKeyType == null) {
      generateSecretKeyType = AES;
    }
    generateSecretKeySize = preferences.getInt(KSE3_SECKEYSIZE, 192);

    // Certificate fingerprint
    certificateFingerprintType =
        DigestType.resolveJce(preferences.get(KSE3_CERTFINGERTYPE, SHA1.jce()));
    if (certificateFingerprintType == null) {
      certificateFingerprintType = SHA1;
    }

    // Password quality
    passwordQualityConfig =
        new PasswordQualityConfig(
            preferences.getBoolean(KSE3_PWDQUALENABLE, false),
            preferences.getBoolean(KSE3_MINPWDQUALENFORCE, false),
            preferences.getInt(KSE3_MINPWDQUAL, 60));

    // Internet proxy settings
    ProxyConfigurationType proxyConfigurationType =
        ProxyConfigurationType.resolve(
            preferences.get(KSE3_PROXY, ProxyConfigurationType.SYSTEM.name()));

    // default should be system settings because of "java.net.useSystemProxies=true", save it for
    // later usage
    SystemProxySelector.setSystemProxySelector(ProxySelector.getDefault());

    switch (proxyConfigurationType) {
      case NONE:
        ProxySelector.setDefault(new NoProxySelector());
        break;
      case PAC:
        // Use PAC URL for proxy configuration
        String pacUrl = preferences.get(KSE3_PACURL, null);
        if (pacUrl != null) {
          ProxySelector.setDefault(new PacProxySelector(pacUrl));
        } else {
          ProxySelector.setDefault(new NoProxySelector());
        }
        break;
      case MANUAL:
        // Use manual settings for HTTP, HTTPS and SOCKS
        ProxyAddress httpProxyAddress = null;
        ProxyAddress httpsProxyAddress = null;
        ProxyAddress socksProxyAddress = null;

        String httpHost = preferences.get(KSE3_HTTPHOST, null);
        int httpPort = preferences.getInt(KSE3_HTTPPORT, 0);

        if (httpHost != null && httpPort > 0) {
          httpProxyAddress = new ProxyAddress(httpHost, httpPort);
        }

        String httpsHost = preferences.get(KSE3_HTTPSHOST, null);
        int httpsPort = preferences.getInt(KSE3_HTTPSPORT, 0);

        if (httpsHost != null && httpsPort > 0) {
          httpsProxyAddress = new ProxyAddress(httpsHost, httpsPort);
        }

        String socksHost = preferences.get(KSE3_SOCKSHOST, null);
        int socksPort = preferences.getInt(KSE3_SOCKSPORT, 0);

        if (socksHost != null && socksPort > 0) {
          socksProxyAddress = new ProxyAddress(socksHost, socksPort);
        }

        if (httpProxyAddress != null || httpsProxyAddress != null) {
          ProxySelector.setDefault(
              new ManualProxySelector(
                  httpProxyAddress, httpsProxyAddress, null, socksProxyAddress));
        } else {
          // no manual settings - use no proxy to connect to the Internet
          ProxySelector.setDefault(new NoProxySelector());
        }
        break;
      case SYSTEM:
      default:
        ProxySelector.setDefault(new SystemProxySelector());
        break;
    }

    // Application size and position
    sizeAndPosition =
        new Rectangle(
            preferences.getInt(KSE3_XPOS, 0),
            preferences.getInt(KSE3_YPOS, 0),
            preferences.getInt(KSE3_WIDTH, KseFrame.DEFAULT_WIDTH),
            preferences.getInt(KSE3_HEIGHT, KseFrame.DEFAULT_HEIGHT));

    // User interface
    showToolBar = preferences.getBoolean(KSE3_SHOWTOOLBAR, true);
    showStatusBar = preferences.getBoolean(KSE3_SHOWSTATUSBAR, true);
    tabLayout = preferences.getInt(KSE3_TABLAYOUT, JTabbedPane.WRAP_TAB_LAYOUT);

    // Recent files
    ArrayList<File> recentFilesList = new ArrayList<File>();
    for (int i = 1; i <= KseFrame.RECENT_FILES_SIZE; i++) {
      String recentFile = preferences.get(KSE3_RECENTFILE + i, null);

      if (recentFile == null) {
        break;
      } else {
        recentFilesList.add(cleanFilePath(new File(recentFile)));
      }
    }
    recentFiles = recentFilesList.toArray(new File[recentFilesList.size()]);

    // Current directory
    String currentDirectoryStr = preferences.get(KSE3_CURRENTDIR, null);
    if (currentDirectoryStr != null) {
      currentDirectory = cleanFilePath(new File(currentDirectoryStr));
    }

    // Look and feel
    lookAndFeelClass = preferences.get(KSE3_LOOKFEEL, null);
    lookAndFeelDecorated = preferences.getBoolean(KSE3_LOOKFEELDECOR, false);

    // Licensing
    licenseAgreed = preferences.getBoolean(KSE3_LICENSEAGREED, false);

    // Tip of the day
    showTipsOnStartUp = preferences.getBoolean(KSE3_TIPSONSTARTUP, true);
    nextTipIndex = preferences.getInt(KSE3_TIPINDEX, 0);

    // Default distinguished name
    defaultDN = preferences.get(KSE3_DEFAULTDN, "");

    // SSL host names and ports for "Examine SSL"
    sslHosts = preferences.get(KSE3_SSLHOSTS, "www.google.com;www.amazon.com");
    sslPorts = preferences.get(KSE3_SSLPORTS, "443");

    // auto update check
    autoUpdateCheckEnabled = preferences.getBoolean(KSE3_AUTO_UPDATE_CHECK_ENABLED, true);
    autoUpdateCheckInterval = preferences.getInt(KSE3_AUTO_UPDATE_CHECK_INTERVAL, 14);
    autoUpdateCheckLastCheck = getDate(preferences, KSE3_AUTO_UPDATE_CHECK_LAST_CHECK, new Date());

    // PKCS#11 libraries
    p11Libs = preferences.get(KSE3_PKCS11_LIBS, "");
  }