[BUGFIX] Fix T3editor after PSR-7 change
[Packages/TYPO3.CMS.git] / typo3 / sysext / openid / lib / php-openid / Auth / OpenID / DiffieHellman.php
1 <?php
2
3 /**
4 * The OpenID library's Diffie-Hellman implementation.
5 *
6 * PHP versions 4 and 5
7 *
8 * LICENSE: See the COPYING file included in this distribution.
9 *
10 * @access private
11 * @package OpenID
12 * @author JanRain, Inc. <openid@janrain.com>
13 * @copyright 2005-2008 Janrain, Inc.
14 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache
15 */
16
17 require_once 'Auth/OpenID.php';
18 require_once 'Auth/OpenID/BigMath.php';
19
20 function Auth_OpenID_getDefaultMod()
21 {
22 return '155172898181473697471232257763715539915724801'.
23 '966915404479707795314057629378541917580651227423'.
24 '698188993727816152646631438561595825688188889951'.
25 '272158842675419950341258706556549803580104870537'.
26 '681476726513255747040765857479291291572334510643'.
27 '245094715007229621094194349783925984760375594985'.
28 '848253359305585439638443';
29 }
30
31 function Auth_OpenID_getDefaultGen()
32 {
33 return '2';
34 }
35
36 /**
37 * The Diffie-Hellman key exchange class. This class relies on
38 * {@link Auth_OpenID_MathLibrary} to perform large number operations.
39 *
40 * @access private
41 * @package OpenID
42 */
43 class Auth_OpenID_DiffieHellman {
44
45 var $mod;
46 var $gen;
47 var $private;
48 var $lib = null;
49
50 function Auth_OpenID_DiffieHellman($mod = null, $gen = null,
51 $private = null, $lib = null)
52 {
53 if ($lib === null) {
54 $this->lib = Auth_OpenID_getMathLib();
55 } else {
56 $this->lib = $lib;
57 }
58
59 if ($mod === null) {
60 $this->mod = $this->lib->init(Auth_OpenID_getDefaultMod());
61 } else {
62 $this->mod = $mod;
63 }
64
65 if ($gen === null) {
66 $this->gen = $this->lib->init(Auth_OpenID_getDefaultGen());
67 } else {
68 $this->gen = $gen;
69 }
70
71 if ($private === null) {
72 $r = $this->lib->rand($this->mod);
73 $this->private = $this->lib->add($r, 1);
74 } else {
75 $this->private = $private;
76 }
77
78 $this->public = $this->lib->powmod($this->gen, $this->private,
79 $this->mod);
80 }
81
82 function getSharedSecret($composite)
83 {
84 return $this->lib->powmod($composite, $this->private, $this->mod);
85 }
86
87 function getPublicKey()
88 {
89 return $this->public;
90 }
91
92 function usingDefaultValues()
93 {
94 return ($this->mod == Auth_OpenID_getDefaultMod() &&
95 $this->gen == Auth_OpenID_getDefaultGen());
96 }
97
98 function xorSecret($composite, $secret, $hash_func)
99 {
100 $dh_shared = $this->getSharedSecret($composite);
101 $dh_shared_str = $this->lib->longToBinary($dh_shared);
102 $hash_dh_shared = $hash_func($dh_shared_str);
103
104 $xsecret = "";
105 for ($i = 0; $i < Auth_OpenID::bytes($secret); $i++) {
106 $xsecret .= chr(ord($secret[$i]) ^ ord($hash_dh_shared[$i]));
107 }
108
109 return $xsecret;
110 }
111 }
112
113