🔐 Java File Encryption/Decryption Tool This is a simple Java-based command-line tool that allows you to securely encrypt and decrypt files using AES encryption. It uses a password to derive a secure key and includes a feature to corrupt files if decryption is attempted too many times with the wrong password.

📁 Features 🔒 AES Encryption using javax.crypto

🔓 Secure decryption with password validation

💣 Corrupts file after 5 failed decryption attempts

📦 No external libraries required

💻 Works in Eclipse, VS Code, or any Java environment

🛠 How to Run ✅ Option 1: Using Eclipse (Recommended) Open Eclipse IDE

Create a new Java Project:

File > New > Java Project

Create a new package named:

FilesEncryptionPrograms Create a new class named:

FileEncypter Copy and paste the full code into the class

Run the program:

Right-click on the file > Run As > Java Application

Eclipse includes required Java libraries by default — no setup needed.

💻 Option 2: Using VS Code Install prerequisites:

Java JDK 8 or later

VS Code with the Java Extension Pack

Create a Java project:

Open Command Palette (Ctrl+Shift+P)

Choose: Java: Create Java Project

Add the Java file:

Inside the src folder, create package FilesEncryptionPrograms

Add the FileEncypter.java file with the provided code

Compile and run:

javac FilesEncryptionPrograms/FileEncypter.java java FilesEncryptionPrograms.FileEncypter If javax.crypto appears missing, ensure you're using the JDK, not just the JRE.

📋 Example Usage plaintext Copy Edit 🔒 Enter 'E' to encrypt or 'D' to decrypt: E Enter path of file: /Users/you/Documents/test.txt Enter output file path: /Users/you/Documents/test_encrypted.txt Enter password to encrypt: mySecret123 ✅ File encrypted successfully: /Users/you/Documents/test_encrypted.txt plaintext Copy Edit 🔒 Enter 'E' to encrypt or 'D' to decrypt: D Enter path of file: /Users/you/Documents/test_encrypted.txt Enter output file path: /Users/you/Documents/test_decrypted.txt Enter password to decrypt (Attempt 1/5): wrongpass ❌ Incorrect password or corrupted file. ... 💀 Too many failed attempts. The file will be corrupted. ☠️ Your file was corrupted. 🔧 Requirements Java Development Kit (JDK 8 or higher)

No external libraries needed

Uses: javax.crypto, java.security, java.io, java.util.

⚠️ Important Notes 💾 Don't forget your password. There's no password recovery.

⛔ After 5 failed decryption attempts, the original file is intentionally corrupted.

🔑 Only the same password that was used to encrypt the file can decrypt it.

🔐 All operations are local — no data is sent anywhere.

📬 Contact For questions, feedback, or contributions, reach out via:

📧 Email: hellohellohihi112233@gmail.com

🧑‍💻 GitHub: https://github.com/hacker-ram8867

🧑‍💻 Author Developed for educational and secure file-handling purposes. Feel free to modify and improve based on your needs.