Hash HMAC algo

lib/Crypto/HashHmac.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Nextcloud - user_sql
+ *
+ * @copyright 2020 Marcin Łojewski <dev@mlojewski.me>
+ * @author    Marcin Łojewski <dev@mlojewski.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace OCA\UserSQL\Crypto;
+
+use OCA\UserSQL\Crypto\Param\ChoiceParam;
+use OCP\IL10N;
+
+/**
+ * HMAC hash implementation.
+ *
+ * @see    hash_hmac()
+ * @author Marcin Łojewski <dev@mlojewski.me>
+ */
+class HashHmac extends AbstractAlgorithm
+{
+    const DEFAULT_ALGORITHM = "ripemd160";
+
+    /**
+     * @var string Hashing algorithm name.
+     */
+    private $hashingAlgorithm;
+
+    /**
+     * The class constructor.
+     *
+     * @param IL10N  $localization     The localization service.
+     * @param string $hashingAlgorithm Hashing algorithm name.
+     */
+    public function __construct(IL10N $localization, $hashingAlgorithm = self::DEFAULT_ALGORITHM)
+    {
+        parent::__construct($localization);
+        $this->hashingAlgorithm = $hashingAlgorithm;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPasswordHash($password, $salt = null)
+    {
+        return hash_hmac($this->hashingAlgorithm, $password, $salt);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function configuration()
+    {
+        return [
+            new ChoiceParam("Hashing algorithm", self::DEFAULT_ALGORITHM, hash_hmac_algos())
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function getAlgorithmName()
+    {
+        return "Hash HMAC";
+    }
+}