Courier hashes. New traits.

lib/HashAlgorithm/CourierSHA1.php

@@ -0,0 +1,57 @@
+<?php
+/**
+ * Nextcloud - user_sql
+ * Copyright (C) 2012-2018 Andreas Böhler <dev (at) aboehler (dot) at>
+ *
+ * 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\user_sql\HashAlgorithm;
+
+use OCA\user_sql\HashAlgorithm\Base\Base64;
+use OCA\user_sql\HashAlgorithm\Base\Singleton;
+
+/**
+ * Courier SHA1 password hash implementation.
+ * @author Marcin Łojewski <dev@mlojewski.me>
+ */
+class CourierSHA1 implements HashAlgorithm
+{
+    use Base64;
+    use Singleton;
+
+    /**
+     * @inheritdoc
+     */
+    public function getVisibleName()
+    {
+        return "Courier base64-encoded SHA1";
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function checkPassword($password, $dbHash)
+    {
+        return $this->getPasswordHash($password) === $dbHash;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPasswordHash($password)
+    {
+        return '{SHA}' . self::hexToBase64(sha1($password));
+    }
+}