Current File : /www/varak.net/wiki.varak.net/includes/libs/CryptRand.php
<?php
/**
* A cryptographic random generator class used for generating secret keys
*
* This is based in part on Drupal code as well as what we used in our own code
* prior to introduction of this class.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @author Daniel Friesen
* @file
*/
/**
* @deprecated since 1.32, use random_bytes()/random_int()
*/
class CryptRand {
/**
* @deprecated since 1.32, unused
*/
const MIN_ITERATIONS = 1000;
/**
* @deprecated since 1.32, unused
*/
const MSEC_PER_BYTE = 0.5;
/**
* Initialize an initial random state based off of whatever we can find
*
* @deprecated since 1.32, unused and does nothing
*
* @return string
*/
protected function initialRandomState() {
return '';
}
/**
* Randomly hash data while mixing in clock drift data for randomness
*
* @deprecated since 1.32, unused and does nothing
*
* @param string $data The data to randomly hash.
* @return string The hashed bytes
* @author Tim Starling
*/
protected function driftHash( $data ) {
return '';
}
/**
* Return a rolling random state initially build using data from unstable sources
*
* @deprecated since 1.32, unused and does nothing
*
* @return string A new weak random state
*/
protected function randomState() {
return '';
}
/**
* Return a boolean indicating whether or not the source used for cryptographic
* random bytes generation in the previously run generate* call
* was cryptographically strong.
*
* @deprecated since 1.32, always returns true
*
* @return bool Always true
*/
public function wasStrong() {
return true;
}
/**
* Generate a run of cryptographically random data and return
* it in raw binary form.
* You can use CryptRand::wasStrong() if you wish to know if the source used
* was cryptographically strong.
*
* @param int $bytes The number of bytes of random data to generate
* @return string Raw binary random data
*/
public function generate( $bytes ) {
$bytes = floor( $bytes );
return random_bytes( $bytes );
}
/**
* Generate a run of cryptographically random data and return
* it in hexadecimal string format.
*
* @param int $chars The number of hex chars of random data to generate
* @return string Hexadecimal random data
*/
public function generateHex( $chars ) {
return MWCryptRand::generateHex( $chars );
}
}
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