Dcrypt\OpensslWrapper

Complexity

Total Complexity

4

Size/Duplication

Total Lines	51
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	encrypt()	0	6	1
A	decrypt()	0	6	1
A	returnOrException()	0	8	2

<?php

/**
 * OpensslWrapper.php
 *
 * PHP version 7
 *
 * @category Dcrypt
 * @package  Dcrypt
 * @author   Michael Meyer (mmeyer2k) <m.meyer2k@gmail.com>
 * @license  http://opensource.org/licenses/MIT The MIT License (MIT)
 * @link     https://github.com/mmeyer2k/dcrypt
 */

namespace Dcrypt;

class OpensslWrapper
{

    /**
     * OpenSSL encrypt wrapper function
     *
     * @param string $data   Data to decrypt
     * @param string $method Cipher method to use
     * @param string $key    Key string
     * @param string $iv     Initialization vector
     * @return string
     */
    public static function encrypt(string $data, string $method, string $key, string $iv): string
    {
        $ret = \openssl_encrypt($data, $method, $key, 1, $iv);

        return self::returnOrException($ret);
    }

    /**
     * OpenSSL decrypt wrapper function
     *
     * @param string $data   Data to decrypt
     * @param string $method Cipher method to use
     * @param string $key    Key string
     * @param string $iv     Initialization vector
     * @return string
     */
    public static function decrypt(string $data, string $method, string $key, string $iv): string
    {
        $ret = \openssl_decrypt($data, $method, $key, 1, $iv);

        return self::returnOrException($ret);
    }

    /**
     * Throw an exception if openssl function returns false
     *
     * @param string|bool $data
     * @return string
     * @throws \Exception
     */
    private static function returnOrException($data): string
    {
        if ($data === false) {
            throw new \Exception('OpenSSL failed to encrypt/decrypt message.');
        }

        return $data;
    }
}