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