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-rw-r--r--lib/private/security/securerandom.php86
1 files changed, 0 insertions, 86 deletions
diff --git a/lib/private/security/securerandom.php b/lib/private/security/securerandom.php
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--- a/lib/private/security/securerandom.php
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-<?php
-/**
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @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 <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Security;
-
-use RandomLib;
-use Sabre\DAV\Exception;
-use OCP\Security\ISecureRandom;
-
-/**
- * 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 OC\Security
- */
-class SecureRandom implements ISecureRandom {
- /**
- * Convenience method to get a low strength random number generator.
- *
- * Low Strength should be used anywhere that random strings are needed
- * in a non-cryptographical setting. They are not strong enough to be
- * used as keys or salts. They are however useful for one-time use tokens.
- *
- * @deprecated 9.0.0 Use \OC\Security\SecureRandom::generate directly or random_bytes() / random_int()
- * @return $this
- */
- public function getLowStrengthGenerator() {
- return $this;
- }
-
- /**
- * Convenience method to get a medium strength random number generator.
- *
- * Medium Strength should be used for most needs of a cryptographic nature.
- * They are strong enough to be used as keys and salts. However, they do
- * take some time and resources to generate, so they should not be over-used
- *
- * @deprecated 9.0.0 Use \OC\Security\SecureRandom::generate directly or random_bytes() / random_int()
- * @return $this
- */
- public function getMediumStrengthGenerator() {
- return $this;
- }
-
- /**
- * Generate a random string of specified length.
- * @param int $length The length of the generated string
- * @param string $characters An optional list of characters to use if no character list is
- * specified all valid base64 characters are used.
- * @return string
- */
- public function generate($length,
- $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/') {
- $maxCharIndex = strlen($characters) - 1;
- $randomString = '';
-
- while($length > 0) {
- $randomNumber = \random_int(0, $maxCharIndex);
- $randomString .= $characters[$randomNumber];
- $length--;
- }
- return $randomString;
- }
-}