Initial Commit

dependencies/symfony/cache/Marshaller/SodiumMarshaller.php

@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace WP_Ultimo\Dependencies\Symfony\Component\Cache\Marshaller;
+
+use WP_Ultimo\Dependencies\Symfony\Component\Cache\Exception\CacheException;
+use WP_Ultimo\Dependencies\Symfony\Component\Cache\Exception\InvalidArgumentException;
+/**
+ * Encrypt/decrypt values using Libsodium.
+ *
+ * @author Ahmed TAILOULOUTE <ahmed.tailouloute@gmail.com>
+ */
+class SodiumMarshaller implements MarshallerInterface
+{
+    private $marshaller;
+    private $decryptionKeys;
+    /**
+     * @param string[] $decryptionKeys The key at index "0" is required and is used to decrypt and encrypt values;
+     *                                 more rotating keys can be provided to decrypt values;
+     *                                 each key must be generated using sodium_crypto_box_keypair()
+     */
+    public function __construct(array $decryptionKeys, MarshallerInterface $marshaller = null)
+    {
+        if (!self::isSupported()) {
+            throw new CacheException('The "sodium" PHP extension is not loaded.');
+        }
+        if (!isset($decryptionKeys[0])) {
+            throw new InvalidArgumentException('At least one decryption key must be provided at index "0".');
+        }
+        $this->marshaller = $marshaller ?? new DefaultMarshaller();
+        $this->decryptionKeys = $decryptionKeys;
+    }
+    public static function isSupported() : bool
+    {
+        return \function_exists('sodium_crypto_box_seal');
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function marshall(array $values, ?array &$failed) : array
+    {
+        $encryptionKey = \sodium_crypto_box_publickey($this->decryptionKeys[0]);
+        $encryptedValues = [];
+        foreach ($this->marshaller->marshall($values, $failed) as $k => $v) {
+            $encryptedValues[$k] = \sodium_crypto_box_seal($v, $encryptionKey);
+        }
+        return $encryptedValues;
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function unmarshall(string $value)
+    {
+        foreach ($this->decryptionKeys as $k) {
+            if (\false !== ($decryptedValue = @\sodium_crypto_box_seal_open($value, $k))) {
+                $value = $decryptedValue;
+                break;
+            }
+        }
+        return $this->marshaller->unmarshall($value);
+    }
+}