Laravel Encryptor

gistfile1.txt

<?php namespace App\Services;

use Exception;
use Illuminate\Contracts\Encryption\DecryptException;
use Illuminate\Contracts\Encryption\Encrypter as EncrypterContract;

class Encrypter implements EncrypterContract {

	/**
	 * The encryption key.
	 *
	 * @var string
	 */
	protected $key;

	/**
	 * The algorithm used for encryption.
	 *
	 * @var string
	 */
	protected $cipher = MCRYPT_RIJNDAEL_256;

	/**
	 * The mode used for encryption.
	 *
	 * @var string
	 */
	protected $mode = MCRYPT_MODE_ECB;

	/**
	 * Create a new encrypter instance.
	 *
	 * @param  string  $key
	 */
	public function __construct($key)
	{
		$this->key = (string) $key;
	}

	/**
	 * Encrypt the given value.
	 *
	 * @param  string  $value
	 * @return string
	 */
	public function encrypt($value)
	{
        return base64_encode(mcrypt_encrypt($this->cipher, $this->key, $value, $this->mode, $this->generate_iv()));
	}

    public function generate_iv()
    {
        return mcrypt_create_iv($this->getIvSize(), $this->getRandomizer());
    }
	/**
	 * Decrypt the given value.
	 *
	 * @param  string  $hash
	 * @return string
	 */
	public function decrypt($hash)
	{
        try
        {
            return mcrypt_decrypt($this->cipher, $this->key, base64_decode($hash), $this->mode, $this->generate_iv());
        }
        catch (Exception $e)
        {
            throw new DecryptException($e->getMessage());
        }
	}

	/**
	 * Get the IV size for the cipher.
	 *
	 * @return int
	 */
	protected function getIvSize()
	{
		return mcrypt_get_iv_size($this->cipher, $this->mode);
	}

	/**
	 * Get the random data source available for the OS.
	 *
	 * @return int
	 */
	protected function getRandomizer()
	{
		return MCRYPT_RAND;
	}

	/**
	 * Set the encryption key.
	 *
	 * @param  string  $key
	 * @return void
	 */
	public function setKey($key)
	{
		$this->key = (string) $key;
	}

	/**
	 * Set the encryption cipher.
	 *
	 * @param  string  $cipher
	 * @return void
	 */
	public function setCipher($cipher)
	{
		$this->cipher = $cipher;
	}

	/**
	 * Set the encryption mode.
	 *
	 * @param  string  $mode
	 * @return void
	 */
	public function setMode($mode)
	{
		$this->mode = $mode;
	}
}