> 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 . */ function nonce() { $num=($_SESSION['noncenum']++)%500; // Incremental suffix to avoid collisions $_SESSION['nonce'.$num]=bin2hex(random_bytes(16)); return '\n"; } function checknonce() { $nonce=explode(':', $_POST['nonce']); $res=(isset($_SESSION['nonce'.$nonce[0]]) && $_SESSION['nonce'.$nonce[0]]==$nonce[1]); unset($_SESSION['nonce'.$nonce[0]]); return $res; } ?>