1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
<?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
*/
use MediaWiki\MediaWikiServices;
class MWCryptRand {
/**
* @return CryptRand
*/
protected static function singleton() {
return MediaWikiServices::getInstance()->getCryptRand();
}
/**
* Return a boolean indicating whether or not the source used for cryptographic
* random bytes generation in the previously run generate* call
* was cryptographically strong.
*
* @return bool Returns true if the source was strong, false if not.
*/
public static function wasStrong() {
return self::singleton()->wasStrong();
}
/**
* Generate a run of (ideally) cryptographically random data and return
* it in raw binary form.
* You can use MWCryptRand::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
* @param bool $forceStrong Pass true if you want generate to prefer cryptographically
* strong sources of entropy even if reading from them may steal
* more entropy from the system than optimal.
* @return string Raw binary random data
*/
public static function generate( $bytes, $forceStrong = false ) {
return self::singleton()->generate( $bytes, $forceStrong );
}
/**
* Generate a run of (ideally) cryptographically random data and return
* it in hexadecimal string format.
* You can use MWCryptRand::wasStrong() if you wish to know if the source used
* was cryptographically strong.
*
* @param int $chars The number of hex chars of random data to generate
* @param bool $forceStrong Pass true if you want generate to prefer cryptographically
* strong sources of entropy even if reading from them may steal
* more entropy from the system than optimal.
* @return string Hexadecimal random data
*/
public static function generateHex( $chars, $forceStrong = false ) {
return self::singleton()->generateHex( $chars, $forceStrong );
}
}
|
