Secure Vault Java 🔒

A secure file encryption and management system built with Java and JavaFX. This application allows users to encrypt sensitive files using AES (Advanced Encryption Standard) and protects access via a hashed authentication mechanism.

🛡️ Core Security Features

This isn't just a file hider; it implements cryptographic standards to ensure data confidentiality:

• AES Encryption: Files are encrypted using the AES algorithm. The content is unreadable without the correct decryption key.
• Password Hashing: User passwords are not stored in plain text. We use SHA-256 (or PBKDF2) to hash credentials, protecting against database leaks.
• Secure File Handling: Utilizes CipherInputStream and CipherOutputStream for efficient memory usage when processing large files.

📋 App Features

• User Authentication: Secure login screen preventing unauthorized access.
• Drag & Drop Interface: Easy drag-and-drop functionality to add files to the vault.
• Lock/Unlock: One-click encryption and decryption of selected files.
• File Integrity: Checks if files have been tampered with (optional, if implemented).

🛠️ Tech Stack

• Language: Java (JDK 17+)
• GUI: JavaFX (FXML, CSS)
• Cryptography: javax.crypto (Cipher, SecretKeySpec), java.security (MessageDigest)
• I/O: Java NIO (Non-blocking I/O) for file manipulation.

🚀 How it Works (Under the Hood)

1. Key Generation: When a user logs in, their password generates a cryptographic key.
2. Encryption Process:
   • The app reads the input file in blocks.
   • Passes data through the AES Cipher.
   • Writes the scrambled bytes to a new file (e.g., file.enc).
3. Decryption: The process is reversed only if the correct key is provided.

⚙️ How to Run

1. Clone the repo:

   git clone [https://github.com/hidanvlad/Secure-Vault-Java.git](https://github.com/hidanvlad/Secure-Vault-Java.git)

2. Run via IDE:
   • Open in IntelliJ IDEA.
   • Run Main.java (or Launcher.java).

⚠️ Disclaimer

This tool is for educational purposes. While it uses standard algorithms, strictly sensitive data should be handled by enterprise-grade security solutions.