runff 1.0 commit

lib/SimpleSAML/Utils/Random.php

@@ -0,0 +1,30 @@
+<?php
+namespace SimpleSAML\Utils;
+
+/**
+ * Utility class for random data generation and manipulation.
+ *
+ * @package SimpleSAMLphp
+ */
+class Random
+{
+
+    /**
+     * The fixed length of random identifiers.
+     */
+    const ID_LENGTH = 43;
+
+    /**
+     * Generate a random identifier, ID_LENGTH bytes long.
+     *
+     * @return string A ID_LENGTH-bytes long string with a random, hex-encoded string.
+     *
+     * @author Andreas Solberg, UNINETT AS <andreas.solberg@uninett.no>
+     * @author Olav Morken, UNINETT AS <olav.morken@uninett.no>
+     * @author Jaime Perez, UNINETT AS <jaime.perez@uninett.no>
+     */
+    public static function generateID()
+    {
+        return '_'.bin2hex(openssl_random_pseudo_bytes((int)((self::ID_LENGTH - 1)/2)));
+    }
+}