The repository targets demonstration of a nice example for the usage of Abstract Factory design pattern. Abstract Factory is a creational design pattern that lets you produce families of related objects without specifying their concrete classes (see more).
I have implemented an Encryption class which allows the client to encrypt data with 3 Encryption algorithms (Vigenere, Affine and AES). Hence, the main aim of the repository is practicing the Abstract Factory pattern rather than providing an Encryption library.
git clone https://github.com/DevTurgay/AbstractFactory-Encryption.git<?php
spl_autoload_register(function ($class_name)
{
// base directory for the namespace prefix (might be customized)
$base_dir = str_replace('\\','/',__DIR__.'/src/');
$file = '';
$file = $base_dir . str_replace('\\', '/', $class_name) . '.php';
if(file_exists($file))
include_once $file;
});
// Sample of Vigenere
use Encryption\Vigenere\VigenereFactory;
$encryption = new VigenereFactory();
// Sample of Affine
use Encryption\Affine\AffineFactory;
$encryption = new AffineFactory;
// Sample of AES
use Encryption\AES\AESFactory;
$encryption = new AESFactory;Pull requests are welcome. I will be very glad to get constructive feedbacks and correction suggestions.
According to the Abstract Factory pattern structure, there are interfaces under src/Encrpytion called EncryptionFactory (general encryption interface), AbstractEncryptor and AbstractDecryptor. And through those interfaces all types of encryption algorithms can be implemented by creating a General Factory class and Encryptor and Decryptor classes. I have personally preferred taking the core algorithm outside of those classes.
Btw, in AES algorithm to be a key and iv (initial vector) should be used, thus I have implemented a Singleton pattern too to be able to save the key and iv which is created in constructor.
An example of the usage can be found in example/index.php