* @author Lukas Reschke * @author Morris Jobke * @author Roeland Jago Douma * * @license AGPL-3.0 * * This code is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * 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, version 3, * along with this program. If not, see * */ namespace OCP\Security; /** * Class SecureRandom provides a wrapper around the random_int function to generate * secure random strings. For PHP 7 the native CSPRNG is used, older versions do * use a fallback. * * Usage: * \OC::$server->getSecureRandom()->generate(10); * * @package OCP\Security * @since 8.0.0 */ interface ISecureRandom { /** * Flags for characters that can be used for generate($length, $characters) */ public const CHAR_UPPER = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; public const CHAR_LOWER = 'abcdefghijklmnopqrstuvwxyz'; public const CHAR_DIGITS = '0123456789'; public const CHAR_SYMBOLS = '!\"#$%&\\\'()*+,-./:;<=>?@[\]^_`{|}~'; /** * Characters that can be used for generate($length, $characters), to * generate human readable random strings. Lower- and upper-case characters and digits * are included. Characters which are ambiguous are excluded, such as I, l, and 1 and so on. */ public const CHAR_HUMAN_READABLE = 'abcdefgijkmnopqrstwxyzABCDEFGHJKLMNPQRSTWXYZ23456789'; /** * Generate a random string of specified length. * @param int $length The length of the generated string * @param string $characters An optional list of characters to use if no character list is * specified all valid base64 characters are used. * @return string * @since 8.0.0 */ public function generate(int $length, string $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'): string; }