?AlkantarClanX12
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<?php
/**
* Class Data_Encryption
*
* @copyright 2021 Google LLC
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
* @link https://sitekit.withgoogle.com
*/
namespace SmashBalloon\Reviews\Common\Helpers;
//Exit if accessed directly
if (!defined('ABSPATH')) {
exit;
}
/**
* Class responsible for encrypting and decrypting data.
*
* @since 2.9.4/5.12.4
* @access private
* @ignore
*/
class Data_Encryption
{
/**
* Key to use for encryption.
*
* @since 2.9.4/5.12.4
* @var string
*/
private $key;
/**
* Salt to use for encryption.
*
* @since 2.9.4/5.12.4
* @var string
*/
private $salt;
/**
* Constructor.
*
* @since 2.9.4/5.12.4
*/
public function __construct($remote = array())
{
if (!empty($remote)) {
$this->key = $remote['key'];
$this->salt = $remote['salt'];
} else {
$this->key = $this->get_default_key();
$this->salt = $this->get_default_salt();
}
}
/**
* Encrypts a value.
*
* If a user-based key is set, that key is used. Otherwise the default key is used.
*
* @since 2.9.4/5.12.4
*
* @param string $value Value to encrypt.
* @return string|bool Encrypted value, or false on failure.
*/
public function encrypt($value)
{
if (!sbr_doing_openssl()) {
return $value;
}
$method = 'aes-256-ctr';
$ivlen = openssl_cipher_iv_length($method);
$iv = openssl_random_pseudo_bytes($ivlen);
$raw_value = openssl_encrypt($value . $this->salt, $method, $this->key, 0, $iv);
if (!$raw_value) {
return false;
}
return base64_encode($iv . $raw_value);
}
/**
* Decrypts a value.
*
* If a user-based key is set, that key is used. Otherwise the default key is used.
*
* @since 2.9.4/5.12.4
*
* @param string $raw_value Value to decrypt.
* @return string|bool Decrypted value, or false on failure.
*/
public function decrypt($raw_value)
{
if (!sbr_doing_openssl()) {
return $raw_value;
}
$raw_value = base64_decode($raw_value, true);
$method = 'aes-256-ctr';
$ivlen = openssl_cipher_iv_length($method);
$iv = substr($raw_value, 0, $ivlen);
$raw_value = substr($raw_value, $ivlen);
$value = openssl_decrypt($raw_value, $method, $this->key, 0, $iv);
if (!$value || substr($value, - strlen($this->salt)) !== $this->salt) {
return false;
}
return substr($value, 0, - strlen($this->salt));
}
public function maybe_encrypt($raw_value)
{
#return $raw_value;
$maybe_decrypted = $this->decrypt($raw_value);
if ($maybe_decrypted) {
return $this->encrypt($maybe_decrypted);
}
return $this->encrypt($raw_value);
}
/**
* Uses a raw value and attempts to decrypt it
*
* @param $value
*
* @return bool|string
*/
public function maybe_decrypt($value)
{
if (!is_string($value)) {
return $value;
}
if (strpos($value, '{') === 0) {
return $value;
}
$decrypted = $this->decrypt($value);
if (!$decrypted) {
return $value;
}
return $decrypted;
}
/**
* Gets the default encryption key to use.
*
* @since 2.9.4/5.12.4
*
* @return string Default (not user-based) encryption key.
*/
private function get_default_key()
{
if (defined('CFF_ENCRYPTION_KEY') && '' !== CFF_ENCRYPTION_KEY) {
return CFF_ENCRYPTION_KEY;
}
if (defined('LOGGED_IN_KEY') && '' !== LOGGED_IN_KEY) {
return LOGGED_IN_KEY;
}
// If this is reached, you're either not on a live site or have a serious security issue.
return 'das-ist-kein-geheimer-schluessel';
}
/**
* Gets the default encryption salt to use.
*
* @since 2.9.4/5.12.4
*
* @return string Encryption salt.
*/
private function get_default_salt()
{
if (defined('CFF_ENCRYPTION_SALT') && '' !== CFF_ENCRYPTION_SALT) {
return CFF_ENCRYPTION_SALT;
}
if (defined('LOGGED_IN_SALT') && '' !== LOGGED_IN_SALT) {
return LOGGED_IN_SALT;
}
// If this is reached, you're either not on a live site or have a serious security issue.
return 'das-ist-kein-geheimes-salz';
}
}