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🔒 JAR Encryption & Decryption Tool

🚀 Overview

This tool provides encryption and decryption for JAR files, allowing secure storage and execution without writing decrypted data to disk.

🛠️ Features

• 🔐 Encrypt JAR files using AES/GCM/NoPadding
• 🔓 Decrypt and execute JAR files directly from memory
• 🚀 Dynamic class loading without extracting files
• 📁 Supports embedded resources in JAR files

🔧 Compilation

javac JarTool.java
jar cf JarTool.jar JarTool.class

🚀 Running the Tool

java -jar JarTool.jar encrypt myfile.jar
java -jar JarTool.jar load encrypted_myfile.jar

• encrypt: Encrypts the specified JAR file and saves it as encrypted_<jarFile>.
• load: Loads and executes an encrypted JAR file directly from memory.

⚙️ How It Works

• 🔑 AES Encryption: Uses AES with an initialization vector to secure JAR files.
• 🏗️ InMemoryClassLoader: Dynamically loads classes and resources from decrypted JARs.
• 📦 Dependencies: Uses javax.crypto, java.util.jar, and java.nio.file for encryption and file handling.

📚 Inspiration

This project was built using insights from Stack Overflow and GitHub. I aimed to create a secure way to encrypt and execute JAR files without extracting them.

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😎 Made By TheJurmik | Visit offical site https://thejurmik.dev