Romm\Formz\Service\HashService

Complexity

Total Complexity

6

Size/Duplication

Total Lines	65
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes	1
Bugs	0	Features	0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	getHash()	0	4	1
A	encrypt()	0	6	1
A	decrypt()	0	10	2
A	checkOpenSslAvailability()	0	6	2

<?php
/*
 * 2017 Romain CANON <romain.hydrocanon@gmail.com>
 *
 * This file is part of the TYPO3 FormZ project.
 * It is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License, either
 * version 3 of the License, or any later version.
 *
 * For the full copyright and license information, see:
 * http://www.gnu.org/licenses/gpl-3.0.html
 */

namespace Romm\Formz\Service;

use Romm\Formz\Exceptions\ExtensionNotLoadedException;
use Romm\Formz\Service\Traits\SelfInstantiateTrait;
use TYPO3\CMS\Core\SingletonInterface;

class HashService implements SingletonInterface
{
    use SelfInstantiateTrait;

    /**
     * @var string
     */
    protected $sslCipher = 'AES-256-CBC'; //@todo

    /**
     * @var string
     */
    protected $sslPassword = 'password!'; //@todo

    /**
     * @param string $value
     * @return string
     */
    public function getHash($value)
    {
        return hash('sha256', $value);
    }

    /**
     * Encrypts data using OpenSSL library.
     *
     * @param mixed $data
     * @return string
     */
    public function encrypt($data)
    {
        $this->checkOpenSslAvailability();

        return openssl_encrypt(json_encode($data), $this->sslCipher, $this->sslPassword);
    }

    /**
     * Decrypts a hashed string using OpenSSL library.
     *
     * @param string $string
     * @return mixed
     */
    public function decrypt($string)
    {
        $this->checkOpenSslAvailability();

        $data = openssl_decrypt($string, $this->sslCipher, $this->sslPassword);

        return $data === false
            ? false
            : json_decode($data, true);
    }

    /**
     * Checks that the `openssl` PHP extension is loaded.
     *
     * @throws ExtensionNotLoadedException
     */
    protected function checkOpenSslAvailability()
    {
        if (false === extension_loaded('openssl')) {
            throw ExtensionNotLoadedException::openSslNotLoaded();
        }
    }
}