+<?php

+	namespace Juju\Data;

+

+	class Encryption {

+		private static $methods = null;

+		private static $instances = [];

+		private $method = null;

+		private function __construct(string $method){

+			$this->method = $method;

+		}

+		public function __get(string $name){

+			switch($name){

+				case 'method':

+					return $this->method;

+				default:

+					throw new \Exception("Property {$name} does not exist");

+			}

+		}

+		public static function methods(){

+			if(is_null(self::$methods)){

+				self::$methods = openssl_get_cipher_methods();

+			}

+			return self::$methods;

+		}

+		public static function from(string $method){

+			if(!in_array($method, self::methods())){

+				throw new Exception("Unsupported OpenSSL method: {$method}");

+			}

+			if(!isset(Encryption::$instances[$method])){

+				Encryption::$instances[$method] = new Encryption($method);

+			}

+			return Encryption::$instances[$method];

+		}

+		public function __toString(){

+			return $this->method.'';

+		}

+		public function iv_len(){

+			return openssl_cipher_iv_length($this->method);

+		}

+		public function encrypt(string $data, string $key, string $iv){

+			return openssl_encrypt($data, $this->method, $key, \OPENSSL_RAW_DATA, $iv);

+		}

+		public function decrypt(string $data, string $key, string $iv){

+			return openssl_decrypt($data, $this->method, $key, \OPENSSL_RAW_DATA, $iv);

+		}

+	}

+?>

+	require_once('encryption.class.php');

+		private $encryption;

+			$tries = 0;

+			$methods = Encryption::methods();

+				$method = $methods[random_int(0, count($methods) - 1)];

+				$this->encryption = Encryption::from($method);

+				$ivlen = $this->encryption->iv_len();

+				$this->data = $this->encryption->encrypt($data, $this->password, $this->iv);

+				if(++$tries == count($methods)){

+					throw new \Exception("Too many failed attempts to encrypt data");

+				}

+			return ''.$this->encryption->decrypt($this->data, $this->password, $this->iv);

+?>