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<?php
/**
* @package FrameworkOnFramework
* @subpackage utils
* @copyright Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
* @note This file has been modified by the Joomla! Project and no longer reflects the original work of its author.
*/
// Protect from unauthorized access
defined('FOF_INCLUDED') or die;
/**
* Generates cryptographically-secure random values.
*/
class FOFEncryptRandval implements FOFEncryptRandvalinterface
{
/**
* Returns a cryptographically secure random value.
*
* Since we only run on PHP 7+ we can use random_bytes(), which internally uses a crypto safe PRNG. If the function
* doesn't exist, Joomla already loads a secure polyfill.
*
* The reason this method exists is backwards compatibility with older versions of FOF. It also allows us to quickly
* address any future issues if Joomla drops the polyfill or otherwise find problems with PHP's random_bytes() on
* some weird host (you can't be too careful when releasing mass-distributed software).
*
* @param integer $bytes How many bytes to return
*
* @return string
*/
public function generate($bytes = 32)
{
return random_bytes($bytes);
}
/**
* Generate random bytes. Adapted from Joomla! 3.2.
*
* Since we only run on PHP 7+ we can use random_bytes(), which internally uses a crypto safe PRNG. If the function
* doesn't exist, Joomla already loads a secure polyfill.
*
* The reason this method exists is backwards compatibility with older versions of FOF. It also allows us to quickly
* address any future issues if Joomla drops the polyfill or otherwise find problems with PHP's random_bytes() on
* some weird host (you can't be too careful when releasing mass-distributed software).
*
* @param integer $length Length of the random data to generate
*
* @return string Random binary data
*/
public function genRandomBytes($length = 32)
{
return random_bytes($length);
}
}