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hregerhreger
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‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.securefilevault</groupId>
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<artifactId>secure-file-vault</artifactId>
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<version>1.0-SNAPSHOT</version>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>20</maven.compiler.source>
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<maven.compiler.target>20</maven.compiler.target>
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<javafx.version>24</javafx.version>
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</properties>
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<dependencies>
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<!-- JavaFX -->
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<dependency>
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<groupId>org.openjfx</groupId>
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<artifactId>javafx-controls</artifactId>
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<version>${javafx.version}</version>
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</dependency>
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<dependency>
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<groupId>org.openjfx</groupId>
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<artifactId>javafx-fxml</artifactId>
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<version>${javafx.version}</version>
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</dependency>
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<!-- SQLite -->
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<dependency>
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<groupId>org.xerial</groupId>
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<artifactId>sqlite-jdbc</artifactId>
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<version>3.49.1.0</version>
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</dependency>
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<!-- Apache Commons -->
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-lang3</artifactId>
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<version>3.14.0</version>
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</dependency>
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<!-- JUnit for testing -->
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>5.10.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.11.0</version>
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<configuration>
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<source>${maven.compiler.source}</source>
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<target>${maven.compiler.target}</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.openjfx</groupId>
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<artifactId>javafx-maven-plugin</artifactId>
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<version>0.0.8</version>
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<configuration>
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<mainClass>com.securefilevault.Main</mainClass>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/com/securefilevault/Main.java‎

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package com.securefilevault;
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import javafx.application.Application;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.Parent;
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import javafx.scene.Scene;
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import javafx.stage.Stage;
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public class Main extends Application {
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@Override
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public void start(Stage primaryStage) throws Exception {
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Parent root = FXMLLoader.load(getClass().getResource("/fxml/login.fxml"));
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primaryStage.setTitle("Secure File Vault");
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primaryStage.setScene(new Scene(root, 800, 600));
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primaryStage.show();
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}
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public static void main(String[] args) {
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launch(args);
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}
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}

‎src/main/java/com/securefilevault/controllers/LoginController.java‎

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package com.securefilevault.controllers;
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import javafx.fxml.FXML;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.Parent;
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import javafx.scene.Scene;
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import javafx.scene.control.*;
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import javafx.stage.Stage;
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import com.securefilevault.services.AuthService;
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import com.securefilevault.services.DatabaseService;
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import java.io.IOException;
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public class LoginController {
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@FXML private TextField usernameField;
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@FXML private PasswordField passwordField;
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@FXML private Button loginButton;
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@FXML private Hyperlink registerLink;
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@FXML private Label errorLabel;
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private final AuthService authService;
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private final DatabaseService databaseService;
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public LoginController() {
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this.databaseService = new DatabaseService();
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this.authService = new AuthService(databaseService);
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}
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@FXML
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public void initialize() {
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loginButton.setOnAction(event -> handleLogin());
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registerLink.setOnAction(event -> handleRegister());
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}
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private void handleLogin() {
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String username = usernameField.getText();
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String password = passwordField.getText();
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if (username.isEmpty() || password.isEmpty()) {
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errorLabel.setText("Please enter both username and password");
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return;
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}
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try {
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if (authService.authenticate(username, password)) {
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loadMainView();
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} else {
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errorLabel.setText("Invalid username or password");
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}
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} catch (Exception e) {
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errorLabel.setText("An error occurred during login");
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e.printStackTrace();
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}
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}
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private void handleRegister() {
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try {
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FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/register.fxml"));
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Parent root = loader.load();
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Stage stage = (Stage) registerLink.getScene().getWindow();
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stage.setScene(new Scene(root));
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} catch (IOException e) {
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errorLabel.setText("Failed to load registration screen");
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e.printStackTrace();
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}
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}
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private void loadMainView() {
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try {
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FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/main.fxml"));
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Parent root = loader.load();
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Stage stage = (Stage) loginButton.getScene().getWindow();
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stage.setScene(new Scene(root));
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} catch (IOException e) {
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errorLabel.setText("Failed to load main view");
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e.printStackTrace();
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}
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}
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}

‎src/main/java/com/securefilevault/controllers/MainController.java‎

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package com.securefilevault.controllers;
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import javafx.fxml.FXML;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.Parent;
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import javafx.scene.Scene;
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import javafx.scene.control.*;
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import javafx.stage.FileChooser;
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import javafx.stage.Stage;
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import com.securefilevault.services.EncryptionService;
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import com.securefilevault.services.DatabaseService;
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import java.io.File;
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import java.io.IOException;
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import java.util.List;
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public class MainController {
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@FXML private Label welcomeLabel;
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@FXML private Button logoutButton;
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@FXML private Button encryptButton;
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@FXML private Button decryptButton;
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@FXML private ListView<String> fileListView;
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@FXML private Label statusLabel;
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private final EncryptionService encryptionService;
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private final DatabaseService databaseService;
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private String currentUsername;
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public MainController() {
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this.encryptionService = new EncryptionService();
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this.databaseService = new DatabaseService();
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}
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@FXML
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public void initialize() {
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setupEventHandlers();
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}
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public void setUsername(String username) {
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this.currentUsername = username;
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welcomeLabel.setText("Welcome, " + username + "!");
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}
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private void setupEventHandlers() {
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logoutButton.setOnAction(event -> handleLogout());
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encryptButton.setOnAction(event -> handleEncrypt());
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decryptButton.setOnAction(event -> handleDecrypt());
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}
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private void handleLogout() {
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try {
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FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/login.fxml"));
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Parent root = loader.load();
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Stage stage = (Stage) logoutButton.getScene().getWindow();
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stage.setScene(new Scene(root));
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} catch (IOException e) {
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statusLabel.setText("Failed to logout");
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e.printStackTrace();
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}
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}
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private void handleEncrypt() {
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FileChooser fileChooser = new FileChooser();
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fileChooser.setTitle("Select File to Encrypt");
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File selectedFile = fileChooser.showOpenDialog(encryptButton.getScene().getWindow());
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if (selectedFile != null) {
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try {
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String password = showPasswordDialog("Enter encryption password:");
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if (password != null) {
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File encryptedFile = new File(selectedFile.getAbsolutePath() + ".encrypted");
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encryptionService.encryptFile(selectedFile, encryptedFile, password);
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fileListView.getItems().add(encryptedFile.getName());
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statusLabel.setText("File encrypted successfully: " + encryptedFile.getName());
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}
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} catch (Exception e) {
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statusLabel.setText("Encryption failed: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}
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private void handleDecrypt() {
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FileChooser fileChooser = new FileChooser();
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fileChooser.setTitle("Select File to Decrypt");
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File selectedFile = fileChooser.showOpenDialog(decryptButton.getScene().getWindow());
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if (selectedFile != null) {
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try {
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String password = showPasswordDialog("Enter decryption password:");
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if (password != null) {
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String outputPath = selectedFile.getAbsolutePath().replace(".encrypted", "");
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File decryptedFile = new File(outputPath);
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encryptionService.decryptFile(selectedFile, decryptedFile, password);
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fileListView.getItems().add(decryptedFile.getName());
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statusLabel.setText("File decrypted successfully: " + decryptedFile.getName());
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}
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} catch (Exception e) {
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statusLabel.setText("Decryption failed: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}
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private String showPasswordDialog(String message) {
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Dialog<String> dialog = new Dialog<>();
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dialog.setTitle("Password Required");
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dialog.setHeaderText(message);
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PasswordField passwordField = new PasswordField();
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dialog.getDialogPane().setContent(passwordField);
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ButtonType okButton = new ButtonType("OK", ButtonBar.ButtonData.OK_DONE);
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dialog.getDialogPane().getButtonTypes().addAll(okButton, ButtonType.CANCEL);
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dialog.setResultConverter(dialogButton -> {
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if (dialogButton == okButton) {
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return passwordField.getText();
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}
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return null;
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});
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return dialog.showAndWait().orElse(null);
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}
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}

‎src/main/java/com/securefilevault/services/AuthService.java‎

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package com.securefilevault.services;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.PBEKeySpec;
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import java.security.NoSuchAlgorithmException;
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import java.security.spec.InvalidKeySpecException;
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import java.security.spec.KeySpec;
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import java.util.Base64;
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public class AuthService {
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private static final int ITERATIONS = 65536;
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private static final int KEY_LENGTH = 256;
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private static final String ALGORITHM = "PBKDF2WithHmacSHA256";
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private final DatabaseService databaseService;
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public AuthService(DatabaseService databaseService) {
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this.databaseService = databaseService;
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}
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public boolean authenticate(String username, String password) {
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try {
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String storedHash = databaseService.getUserPasswordHash(username);
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if (storedHash == null) {
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return false;
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}
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String[] parts = storedHash.split(":");
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byte[] salt = Base64.getDecoder().decode(parts[0]);
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String hash = parts[1];
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String computedHash = hashPassword(password, salt);
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return hash.equals(computedHash);
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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public String hashPassword(String password, byte[] salt) {
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try {
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KeySpec spec = new PBEKeySpec(password.toCharArray(), salt, ITERATIONS, KEY_LENGTH);
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SecretKeyFactory factory = SecretKeyFactory.getInstance(ALGORITHM);
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byte[] hash = factory.generateSecret(spec).getEncoded();
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return Base64.getEncoder().encodeToString(hash);
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} catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
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throw new RuntimeException("Error hashing password", e);
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}
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}
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public byte[] generateSalt() {
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java.security.SecureRandom random = new java.security.SecureRandom();
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byte[] salt = new byte[16];
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random.nextBytes(salt);
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return salt;
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}
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}

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