|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* The RandomLib library for securely generating random numbers and strings in PHP |
|
5
|
|
|
* |
|
6
|
|
|
* @author Anthony Ferrara <[email protected]> |
|
7
|
|
|
* @copyright 2011 The Authors |
|
8
|
|
|
* @license http://www.opensource.org/licenses/mit-license.html MIT License |
|
9
|
|
|
* @version Build @@version@@ |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* The Mcrypt abstract mixer class |
|
14
|
|
|
* |
|
15
|
|
|
* PHP version 5.3 |
|
16
|
|
|
* |
|
17
|
|
|
* @category PHPCryptLib |
|
18
|
|
|
* @package Random |
|
19
|
|
|
* @subpackage Mixer |
|
20
|
|
|
* |
|
21
|
|
|
* @author Anthony Ferrara <[email protected]> |
|
22
|
|
|
* @copyright 2013 The Authors |
|
23
|
|
|
* @license http://www.opensource.org/licenses/mit-license.html MIT License |
|
24
|
|
|
* |
|
25
|
|
|
* @version Build @@version@@ |
|
26
|
|
|
*/ |
|
27
|
|
|
namespace RandomLib; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* The mcrypt abstract mixer class |
|
31
|
|
|
* |
|
32
|
|
|
* @category PHPCryptLib |
|
33
|
|
|
* @package Random |
|
34
|
|
|
* @subpackage Mixer |
|
35
|
|
|
* |
|
36
|
|
|
* @author Anthony Ferrara <[email protected]> |
|
37
|
|
|
* @author Chris Smith <[email protected]> |
|
38
|
|
|
*/ |
|
39
|
|
|
abstract class AbstractMcryptMixer extends AbstractMixer |
|
40
|
|
|
{ |
|
41
|
|
|
/** |
|
42
|
|
|
* mcrypt module resource |
|
43
|
|
|
* |
|
44
|
|
|
* @var resource |
|
45
|
|
|
*/ |
|
46
|
|
|
private $mcrypt; |
|
47
|
|
|
|
|
48
|
|
|
/** |
|
49
|
|
|
* Block size of cipher |
|
50
|
|
|
* |
|
51
|
|
|
* @var int |
|
52
|
|
|
*/ |
|
53
|
|
|
private $blockSize; |
|
54
|
|
|
|
|
55
|
|
|
/** |
|
56
|
|
|
* Cipher initialization vector |
|
57
|
|
|
* |
|
58
|
|
|
* @var string |
|
59
|
|
|
*/ |
|
60
|
|
|
private $initv; |
|
61
|
|
|
|
|
62
|
|
|
/** |
|
63
|
|
|
* {@inheritdoc} |
|
64
|
|
|
*/ |
|
65
|
|
|
public static function test() |
|
66
|
|
|
{ |
|
67
|
|
|
return extension_loaded('mcrypt'); |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Construct mcrypt mixer |
|
72
|
|
|
*/ |
|
73
|
|
|
public function __construct() |
|
74
|
|
|
{ |
|
75
|
|
|
$this->mcrypt = mcrypt_module_open($this->getCipher(), '', MCRYPT_MODE_ECB, ''); |
|
76
|
|
|
$this->blockSize = mcrypt_enc_get_block_size($this->mcrypt); |
|
77
|
|
|
$this->initv = str_repeat(chr(0), mcrypt_enc_get_iv_size($this->mcrypt)); |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
/** |
|
81
|
|
|
* Performs cleanup |
|
82
|
|
|
*/ |
|
83
|
|
|
public function __destruct() |
|
84
|
|
|
{ |
|
85
|
|
|
if ($this->mcrypt) { |
|
86
|
|
|
mcrypt_module_close($this->mcrypt); |
|
87
|
|
|
} |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* Fetch the cipher for mcrypt. |
|
92
|
|
|
* |
|
93
|
|
|
* @return string |
|
94
|
|
|
*/ |
|
95
|
|
|
abstract protected function getCipher(); |
|
96
|
|
|
|
|
97
|
|
|
/** |
|
98
|
|
|
* {@inheritdoc} |
|
99
|
|
|
*/ |
|
100
|
|
|
protected function getPartSize() |
|
101
|
|
|
{ |
|
102
|
|
|
return $this->blockSize; |
|
103
|
|
|
} |
|
104
|
|
|
|
|
105
|
|
|
/** |
|
106
|
|
|
* {@inheritdoc} |
|
107
|
|
|
*/ |
|
108
|
|
|
protected function mixParts1($part1, $part2) |
|
109
|
|
|
{ |
|
110
|
|
|
return $this->encryptBlock($part1, $part2); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
|
|
/** |
|
114
|
|
|
* {@inheritdoc} |
|
115
|
|
|
*/ |
|
116
|
|
|
protected function mixParts2($part1, $part2) |
|
117
|
|
|
{ |
|
118
|
|
|
return $this->decryptBlock($part2, $part1); |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
/** |
|
122
|
|
|
* Encrypts a block using the suppied key |
|
123
|
|
|
* |
|
124
|
|
|
* @param string $input Plaintext to encrypt |
|
125
|
|
|
* @param string $key Encryption key |
|
126
|
|
|
* |
|
127
|
|
|
* @return string Resulting ciphertext |
|
128
|
|
|
*/ |
|
129
|
|
View Code Duplication |
private function encryptBlock($input, $key) |
|
130
|
|
|
{ |
|
131
|
|
|
if (!$input && !$key) { |
|
132
|
|
|
return ''; |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
|
|
$this->prepareCipher($key); |
|
136
|
|
|
$result = mcrypt_generic($this->mcrypt, $input); |
|
137
|
|
|
mcrypt_generic_deinit($this->mcrypt); |
|
138
|
|
|
|
|
139
|
|
|
return $result; |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
|
|
/** |
|
143
|
|
|
* Derypts a block using the suppied key |
|
144
|
|
|
* |
|
145
|
|
|
* @param string $input Ciphertext to decrypt |
|
146
|
|
|
* @param string $key Encryption key |
|
147
|
|
|
* |
|
148
|
|
|
* @return string Resulting plaintext |
|
149
|
|
|
*/ |
|
150
|
|
View Code Duplication |
private function decryptBlock($input, $key) |
|
151
|
|
|
{ |
|
152
|
|
|
if (!$input && !$key) { |
|
153
|
|
|
return ''; |
|
154
|
|
|
} |
|
155
|
|
|
|
|
156
|
|
|
$this->prepareCipher($key); |
|
157
|
|
|
$result = mdecrypt_generic($this->mcrypt, $input); |
|
158
|
|
|
mcrypt_generic_deinit($this->mcrypt); |
|
159
|
|
|
|
|
160
|
|
|
return $result; |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
|
|
/** |
|
164
|
|
|
* Sets up the mcrypt module |
|
165
|
|
|
* |
|
166
|
|
|
* @param string $key |
|
167
|
|
|
* |
|
168
|
|
|
* @return void |
|
169
|
|
|
*/ |
|
170
|
|
|
private function prepareCipher($key) |
|
171
|
|
|
{ |
|
172
|
|
|
if (0 !== mcrypt_generic_init($this->mcrypt, $key, $this->initv)) { |
|
173
|
|
|
throw new \RuntimeException('Failed to prepare mcrypt module'); |
|
174
|
|
|
} |
|
175
|
|
|
} |
|
176
|
|
|
} |
|
177
|
|
|
|
mambax7 /
XoopsCore25
