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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 Hash medium strength mixer class |
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* |
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* This class implements a mixer based upon the recommendations in RFC 4086 |
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* section 5.2 |
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* |
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* PHP version 5.3 |
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* |
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* @see http://tools.ietf.org/html/rfc4086#section-5.2 |
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* |
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* @category PHPCryptLib |
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* @package Random |
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* @subpackage Mixer |
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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\Mixer; |
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use SecurityLib\Strength; |
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use SecurityLib\Util; |
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/** |
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* The Hash medium strength mixer class |
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* |
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* This class implements a mixer based upon the recommendations in RFC 4086 |
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* section 5.2 |
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* |
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* @see http://tools.ietf.org/html/rfc4086#section-5.2 |
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* |
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* @category PHPCryptLib |
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* @package Random |
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* @subpackage Mixer |
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* |
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* @author Anthony Ferrara <[email protected]> |
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*/ |
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class Hash extends \RandomLib\AbstractMixer |
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{ |
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/** |
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* @var string The hash instance to use |
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*/ |
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protected $hash = null; |
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/** |
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* Build the hash mixer |
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* |
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* @param string $hash The hash instance to use (defaults to sha512) |
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* |
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* @return void |
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*/ |
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public function __construct($hash = 'sha512') |
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{ |
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$this->hash = $hash; |
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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 \SecurityLib\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::MEDIUM); |
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} |
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/** |
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* Test to see if the mixer is available |
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* |
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* @return bool If the mixer is available on the system |
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*/ |
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public static function test() |
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{ |
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return true; |
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} |
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/** |
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* Get the block size (the size of the individual blocks used for the mixing) |
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* |
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* @return int The block size |
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*/ |
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protected function getPartSize() |
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{ |
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return Util::safeStrlen(hash($this->hash, '', true)); |
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} |
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/** |
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* Mix 2 parts together using one method |
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* |
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* @param string $part1 The first part to mix |
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* @param string $part2 The second part to mix |
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* |
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* @return string The mixed data |
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*/ |
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protected function mixParts1($part1, $part2) |
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{ |
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return hash_hmac($this->hash, $part1, $part2, true); |
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} |
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/** |
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* Mix 2 parts together using another different method |
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* |
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* @param string $part1 The first part to mix |
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* @param string $part2 The second part to mix |
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* |
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* @return string The mixed data |
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*/ |
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protected function mixParts2($part1, $part2) |
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{ |
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return hash_hmac($this->hash, $part2, $part1, true); |
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} |
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} |
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ircmaxell /
RandomLib
Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.