reupload files

samples/website_integration/Sha256.php

@@ -0,0 +1,48 @@
+<?php
+
+/***********************************************************
+ * AuthMe website integration logic for SHA256             *
+ * ------------------------------------------------------- *
+ * See AuthMeController for details.                       *
+ *                                                         *
+ * Source: https://github.com/AuthMe/AuthMeReloaded/       *
+ ***********************************************************/
+class Sha256 extends AuthMeController {
+
+    /** @var string[] range of characters for salt generation */
+    private $CHARS;
+
+    const SALT_LENGTH = 16;
+
+    public function __construct() {
+        $this->CHARS = self::initCharRange();
+    }
+
+    protected function isValidPassword($password, $hash) {
+        // $SHA$salt$hash, where hash := sha256(sha256(password) . salt)
+        $parts = explode('$', $hash);
+        return count($parts) === 4 && $parts[3] === hash('sha256', hash('sha256', $password) . $parts[2]);
+    }
+
+    protected function hash($password) {
+        $salt = $this->generateSalt();
+        return '$SHA$' . $salt . '$' . hash('sha256', hash('sha256', $password) . $salt);
+    }
+
+    /**
+     * @return string randomly generated salt
+     */
+    private function generateSalt() {
+        $maxCharIndex = count($this->CHARS) - 1;
+        $salt = '';
+        for ($i = 0; $i < self::SALT_LENGTH; ++$i) {
+            $salt .= $this->CHARS[mt_rand(0, $maxCharIndex)];
+        }
+        return $salt;
+    }
+
+    private static function initCharRange() {
+        return array_merge(range('0', '9'), range('a', 'f'));
+    }
+
+}