Ekdant-Online-Store/system/library/encryption.php

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2024-08-06 12:21:00 +00:00
<?php
/**
* @package OpenCart
* @author Daniel Kerr, Billy Noah
* @copyright Copyright (c) 2005 - 2022, OpenCart, Ltd. (https://www.opencart.com/)
* @license https://opensource.org/licenses/GPL-3.0
* @link https://www.opencart.com
*/
namespace Opencart\System\Library;
/**
* Class Encryption
*/
class Encryption {
/**
* @var string
*/
private string $cipher = 'aes-256-ctr';
/**
* @var string
*/
private string $digest = 'sha256';
/**
* Encrypt
*
* @param string $key
* @param string $value
*
* @return string
*/
public function encrypt(string $key, string $value): string {
$key = openssl_digest($key, $this->digest, true);
$iv_length = openssl_cipher_iv_length($this->cipher);
$iv = openssl_random_pseudo_bytes($iv_length);
return base64_encode($iv . openssl_encrypt($value, $this->cipher, $key, OPENSSL_RAW_DATA, $iv));
}
/**
* Decrypt
*
* @param string $key
* @param string $value
*
* @return string
*/
public function decrypt(string $key, string $value): string {
$result = '';
$key = openssl_digest($key, $this->digest, true);
$iv_length = openssl_cipher_iv_length($this->cipher);
$value = base64_decode($value);
$iv = substr($value, 0, $iv_length);
$value = substr($value, $iv_length);
if (strlen($iv) == $iv_length) {
$result = openssl_decrypt($value, $this->cipher, $key, OPENSSL_RAW_DATA, $iv);
}
return $result;
}
}