mirror of
https://github.com/espocrm/espocrm.git
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103 lines
3.5 KiB
PHP
103 lines
3.5 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014-2020 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
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* Website: https://www.espocrm.com
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*
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* EspoCRM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* EspoCRM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with EspoCRM. If not, see http://www.gnu.org/licenses/.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\Core\Utils;
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class Crypt
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{
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private $config;
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private $key = null;
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private $cryptKey = null;
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private $iv = null;
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public function __construct(Config $config)
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{
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$this->config = $config;
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$this->cryptKey = $config->get('cryptKey', '');
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}
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protected function getKey()
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{
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if (empty($this->key)) {
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$this->key = hash('sha256', $this->cryptKey, true);
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}
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return $this->key;
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}
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protected function getIv()
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{
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if (empty($this->iv)) {
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if (extension_loaded('openssl')) {
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$this->iv = openssl_random_pseudo_bytes(16);
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} else {
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$this->iv = mcrypt_create_iv(16, MCRYPT_RAND);
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}
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}
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return $this->iv;
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}
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public function encrypt($string)
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{
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$iv = $this->getIv();
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if (extension_loaded('openssl')) {
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return base64_encode(openssl_encrypt($string, 'aes-256-cbc', $this->getKey(), OPENSSL_RAW_DATA , $iv) . $iv);
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} else {
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$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, 'cbc');
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$pad = $block - (strlen($string) % $block);
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$string .= str_repeat(chr($pad), $pad);
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return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $this->getKey(), $string, MCRYPT_MODE_CBC, $iv) . $iv);
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}
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}
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public function decrypt($encryptedString)
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{
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$encryptedString = base64_decode($encryptedString);
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$string = substr($encryptedString, 0, strlen($encryptedString) - 16);
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$iv = substr($encryptedString, -16);
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if (extension_loaded('openssl')) {
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return trim(openssl_decrypt($string, 'aes-256-cbc', $this->getKey(), OPENSSL_RAW_DATA, $iv));
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} else {
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$string = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $this->getKey(), $string, MCRYPT_MODE_CBC, $iv);
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$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, 'cbc');
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$len = strlen($string);
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$pad = ord($string[$len - 1]);
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return substr($string, 0, strlen($string) - $pad);
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}
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}
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public function generateKey()
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{
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return Util::generateSecretKey();
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}
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}
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