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PasswordManager
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PasswordManager
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import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.security.spec.KeySpec;
import java.util.Base64;
public class PasswordManager extends JFrame {
private JTextField accountField;
private JPasswordField passwordField;
private JButton saveButton;
private JTextArea passwordListArea;
private static final String SECRET_KEY = "YourSecretKey"; // Replace with your own secret key
private static final String SALT = "YourSalt"; // Replace with your own salt
public PasswordManager() {
setTitle("Password Manager");
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
JPanel mainPanel = new JPanel(new BorderLayout());
JPanel inputPanel = new JPanel(new GridLayout(2, 2));
inputPanel.add(new JLabel("Account:"));
accountField = new JTextField();
inputPanel.add(accountField);
inputPanel.add(new JLabel("Password:"));
passwordField = new JPasswordField();
inputPanel.add(passwordField);
mainPanel.add(inputPanel, BorderLayout.NORTH);
saveButton = new JButton("Save Password");
saveButton.addActionListener(new SaveButtonListener());
mainPanel.add(saveButton, BorderLayout.CENTER);
passwordListArea = new JTextArea();
passwordListArea.setEditable(false);
mainPanel.add(new JScrollPane(passwordListArea), BorderLayout.SOUTH);
add(mainPanel);
setVisible(true);
}
private String encryptPassword(String password) {
try {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");
KeySpec spec = new PBEKeySpec(password.toCharArray(), SALT.getBytes(), 65536, 256);
SecretKey tmp = factory.generateSecret(spec);
SecretKeySpec secretKey = new SecretKeySpec(tmp.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
return Base64.getEncoder().encodeToString(cipher.doFinal(password.getBytes()));
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(this, "Error encrypting password", "Error", JOptionPane.ERROR_MESSAGE);
return null;
}
}
private String decryptPassword(String encryptedPassword) {
try {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");
KeySpec spec = new PBEKeySpec(SECRET_KEY.toCharArray(), SALT.getBytes(), 65536, 256);
SecretKey tmp = factory.generateSecret(spec);
SecretKeySpec secretKey = new SecretKeySpec(tmp.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
return new String(cipher.doFinal(Base64.getDecoder().decode(encryptedPassword)));
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(this, "Error decrypting password", "Error", JOptionPane.ERROR_MESSAGE);
return null;
}
}
private class SaveButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
String account = accountField.getText().trim();
String password = new String(passwordField.getPassword()).trim();
if (!account.isEmpty() && !password.isEmpty()) {
String encryptedPassword = encryptPassword(password);
if (encryptedPassword != null) {
passwordListArea.append(account + " - " + encryptedPassword + "\n");
accountField.setText("");
passwordField.setText("");
}
} else {
JOptionPane.showMessageDialog(PasswordManager.this, "Please fill in both account and password", "Error", JOptionPane.ERROR_MESSAGE);
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(PasswordManager::new);
}
}