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