github.com/naicoi92/obfuscator

jsobfuscator-go

A Go library for JavaScript obfuscation using V8 JavaScript Engine.

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Introduction

jsobfuscator-go is a Go library that helps obfuscate JavaScript code by using JavaScript Obfuscator and V8 Engine. This library provides a simple way to protect your JavaScript code from being easily read and understood.

Installation

go get github.com/naicoi92/obfuscator

Requirements

• Go 1.24.0 or later
• v8go library (automatically installed when using go get)

Usage

Basic Example

package main

import (
	"fmt"
	"github.com/naicoi92/obfuscator"
)

func main() {
	// Initialize the obfuscator
	obf, err := obfuscator.NewObfuscator()
	if err != nil {
		panic(err)
	}

	// JavaScript code to obfuscate
	jsCode := `function sayHello() { return "Hello World"; }`

	// Perform obfuscation
	obfuscatedCode, err := obf.Obfuscate(jsCode)
	if err != nil {
		panic(err)
	}

	// Print the obfuscated code
	fmt.Println(obfuscatedCode)
}

Important Notes

• JavaScript code cannot contain backtick characters (`) as they are used to wrap the code during processing.
• The obfuscator uses the following default options:

  const options = {
      compact: (Math.random() < 0.5),
      controlFlowFlattening: true,
      controlFlowFlatteningThreshold: 1,
      numbersToExpressions: true,
      simplify: true,
      stringArrayShuffle: true,
      splitStrings: true,
      stringArrayThreshold: 1
  }
  

Performance Optimization

The library uses a caching mechanism to optimize performance when performing multiple obfuscations. You should reuse the same Obfuscator instance when you need to obfuscate multiple JavaScript code snippets.

obf, _ := obfuscator.NewObfuscator()

// Use the same instance for multiple obfuscations
result1, _ := obf.Obfuscate(jsCode1)
result2, _ := obf.Obfuscate(jsCode2)
result3, _ := obf.Obfuscate(jsCode3)

Contributing

Contributions are welcome! Please feel free to submit a Pull Request or create an Issue on GitHub.

License

This project is distributed under the MIT license.