<?php
class phpCrypto {
	private $key = '';
	private $algorithm = '';
	private $iv = '';
	
	public function __construct($key = 'MyRandomStringThatWillAlwaysBeTheSame', $iv = '6e8sd9f54c5ds65f23df', $algorithm = 'AES-256-CBC') {
		$this->key = $key;
		$this->algorithm = $algorithm;
		$this->iv = $iv;
	}

	public function encrypt($plain_string) {
		$key = hash('sha256', $this->key);
		$iv = substr(hash('sha256',$this->iv), 0, 16);
		$return = $plain_string;
		try {
			$return = base64_encode(openssl_encrypt($plain_string,$this->algorithm,$key,0,$iv));
		} catch(Exception $e) {
		}
		return $return;
	}

	public function decrypt($encrypted_string) {
		$key = hash('sha256', $this->key);
		$iv = substr(hash('sha256',$this->iv), 0, 16);
		$return = $encrypted_string;
		try {
			$return = openssl_decrypt(base64_decode($encrypted_string),$this->algorithm,$key,0,$iv);
		} catch(Exception $e) {
		}
		return $return;
	}  

	public function __destruct() {
	}
}
?>