* setKey('abcdefg'); * * echo base64_encode($hash->hash('abcdefg')); * ?> * * * @category Crypt * @package Hash * @author Jim Wigginton * @copyright 2007 Jim Wigginton * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link http://phpseclib.sourceforge.net */ namespace phpseclib\Crypt; /** * Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions. * * @package Hash * @author Jim Wigginton * @access public */ class Hash { /**#@+ * @access private * @see \phpseclib\Crypt\Hash::__construct() */ /** * Toggles the internal implementation */ const MODE_INTERNAL = 1; /**#@-*/ /** * Hash Object * * @see self::setHash() * @var null|\phpseclib3\Crypt\Hash * @access private */ private $hash; /** * Default Constructor. * * @param string $hash * @return \phpseclib\Crypt\Hash * @access public */ public function __construct($hash = 'sha1') { $this->setHash($hash); } /** * Sets the key for HMACs * * Keys can be of any length. * * @access public * @param string $key */ public function setKey($key = false) { $this->hash->setKey($key); } /** * Gets the hash function. * * As set by the constructor or by the setHash() method. * * @access public * @return string */ public function getHash() { return $this->hash->getHash(); } /** * Sets the hash function. * * @access public * @param string $hash */ public function setHash($hash) { $this->hash = new \phpseclib3\Crypt\Hash; try { $this->hash->setHash($hash); } catch (\phpseclib3\Exception\UnsupportedAlgorithmException $e) { $this->hash->setHash('sha1'); } } /** * Compute the HMAC. * * @access public * @param string $text * @return string */ public function hash($text) { return $this->hash->hash($text); } /** * Returns the hash length (in bytes) * * @access public * @return int */ public function getLength() { return $this->hash->getLengthInBytes(); } }