123 lines
3.3 KiB
PHP
123 lines
3.3 KiB
PHP
<?php
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/**
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* 2007-2018 PrestaShop.
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*
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* NOTICE OF LICENSE
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*
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* This source file is subject to the Open Software License (OSL 3.0)
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* that is bundled with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* https://opensource.org/licenses/OSL-3.0
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@prestashop.com so we can send you a copy immediately.
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*
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* DISCLAIMER
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*
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* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
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* versions in the future. If you wish to customize PrestaShop for your
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* needs please refer to http://www.prestashop.com for more information.
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*
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* @author PrestaShop SA <contact@prestashop.com>
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* @copyright 2007-2018 PrestaShop SA
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* @license https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
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* International Registered Trademark & Property of PrestaShop SA
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*/
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use Defuse\Crypto\Exception\EnvironmentIsBrokenException;
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/**
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* Class PhpEncryptionCore for openSSL 1.0.1+.
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*/
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class PhpEncryptionCore
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{
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const ENGINE = 'PhpEncryptionEngine';
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const LEGACY_ENGINE = 'PhpEncryptionLegacyEngine';
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private static $engine;
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/**
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* PhpEncryptionCore constructor.
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*
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* @param string $hexString A string that only contains hexadecimal characters
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* Bother upper and lower case are allowed
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*/
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public function __construct($hexString)
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{
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$engineClass = self::resolveEngineToUse();
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self::$engine = new $engineClass($hexString);
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}
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/**
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* Encrypt the plaintext.
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*
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* @param string $plaintext Plaintext
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*
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* @return string Cipher text
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*/
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public function encrypt($plaintext)
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{
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return self::$engine->encrypt($plaintext);
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}
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/**
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* Decrypt the cipher text.
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*
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* @param string $cipherText Cipher text
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*
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* @return bool|string Plaintext
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* `false` if unable to decrypt
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*
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* @throws Exception
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*/
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public function decrypt($cipherText)
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{
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return self::$engine->decrypt($cipherText);
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}
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/**
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* @param $header
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* @param $bytes
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*
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* @return string
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*
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* @throws \Defuse\Crypto\Exception\EnvironmentIsBrokenException
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*/
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public static function saveBytesToChecksummedAsciiSafeString($header, $bytes)
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{
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$engine = self::resolveEngineToUse();
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return $engine::saveBytesToChecksummedAsciiSafeString($header, $bytes);
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}
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/**
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* @return string
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*
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* @throws Exception
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*/
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public static function createNewRandomKey()
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{
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$engine = self::resolveEngineToUse();
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try {
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$randomKey = $engine::createNewRandomKey();
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} catch (EnvironmentIsBrokenException $exception) {
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$buf = $engine::randomCompat();
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$randomKey = $engine::saveToAsciiSafeString($buf);
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}
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return $randomKey;
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}
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/**
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* Choose which engine use regarding the OpenSSL cipher methods available.
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*/
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public static function resolveEngineToUse()
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{
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if (false === in_array(\Defuse\Crypto\Core::CIPHER_METHOD, openssl_get_cipher_methods())) {
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return self::LEGACY_ENGINE;
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}
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return self::ENGINE;
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}
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}
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