XXTEA for PHP

Introduction

XXTEA is a fast and secure encryption algorithm. This is a XXTEA library for PHP.

This library is a fork of the original xxtea/xxtea-php repository and adds proper namespacing to be compatible with modern php code.

Further more this library can be used as a shim in places where the pecl extension is not available as it implements the two functions xxtea_encrypt() and xxtea_decrypt() provided by the pecl extension.

It is different from the original XXTEA encryption algorithm. It encrypts and decrypts string instead of uint32 array, and the key is also string.

Installation

To install this library, you can add the following lines to your composer.json file:

{ "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/arunagirinathar/xxtea-php"
        }
    ],
    "require": {
        "arunagirinathar/xxtea-php": "^1.0"
    }

After updating the composer.json file, run the following command to install the library:

composer install

Add the following lines to your composer.json

Usage

Here's an example of how to use the XXTEA encryption library:

<?php
    use Arunagirinathar\XXTEAEncryption;
    require_once 'vendor/autoload.php';


    $str = "Hello World!";
    $key = "1234567890";
    $encrypt_data = xxtea_encrypt($str, $key);
    $decrypt_data = xxtea_decrypt($encrypt_data, $key);
    if ($str == $decrypt_data) {
        echo "success!";
    } else {
        echo "fail!";
    }
?>

In this example, we first include the autoloader from Composer, which will autoload the necessary classes. Then, we encrypt the string "Hello World!" using the xxtea_encrypt() function and a given key. Next, we decrypt the encrypted data using the xxtea_decrypt() function and the same key. Finally, we check if the decrypted data matches the original string and display the result accordingly.