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- <?php
- /*
- * The RandomLib library for securely generating random numbers and strings in PHP
- *
- * @author Anthony Ferrara <ircmaxell@ircmaxell.com>
- * @copyright 2011 The Authors
- * @license http://www.opensource.org/licenses/mit-license.html MIT License
- * @version Build @@version@@
- */
- /**
- * The PHP7 Random Number Source
- *
- * This uses the inbuilt PHP7 Random Bytes function
- *
- * PHP version 5.3
- *
- * @category PHPCryptLib
- * @package Random
- * @subpackage Source
- *
- * @author Anthony Ferrara <ircmaxell@ircmaxell.com>
- * @author Paragon Initiative Enterprises <security@paragonie.com>
- * @copyright 2011 The Authors
- * @license http://www.opensource.org/licenses/mit-license.html MIT License
- *
- * @version Build @@version@@
- */
- namespace RandomLib\Source;
- use SecurityLib\Strength;
- /**
- * The PHP7 Random Number Source
- *
- * This uses the php7 secure generator to generate high strength numbers
- *
- * @category PHPCryptLib
- * @package Random
- * @subpackage Source
- *
- * @author Anthony Ferrara <ircmaxell@ircmaxell.com>
- * @author Paragon Initiative Enterprises <security@paragonie.com>
- */
- class RandomBytes extends \RandomLib\AbstractSource
- {
- /**
- * If the source is currently available.
- * Reasons might be because the library is not installed
- *
- * @return bool
- */
- public static function isSupported()
- {
- return \is_callable('random_bytes');
- }
- /**
- * Return an instance of Strength indicating the strength of the source
- *
- * @return Strength An instance of one of the strength classes
- */
- public static function getStrength()
- {
- return new Strength(Strength::HIGH);
- }
- /**
- * Generate a random string of the specified size
- *
- * @param int $size The size of the requested random string
- *
- * @return string A string of the requested size
- */
- public function generate($size)
- {
- if (!self::isSupported()) {
- return \str_repeat(chr(0), $size);
- }
- return \random_bytes($size);
- }
- }
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