|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace CloudControl\Cms\crypt { |
|
4
|
|
|
|
|
5
|
|
|
/** |
|
6
|
|
|
* Class Crypt |
|
7
|
|
|
* @package CloudControl\Cms\crypt |
|
8
|
|
|
*/ |
|
9
|
|
|
class Crypt |
|
10
|
|
|
{ |
|
11
|
|
|
/** |
|
12
|
|
|
* @var string |
|
13
|
|
|
*/ |
|
14
|
|
|
private $lastSalt; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* Encrypts the given value using the blowfish algorithm |
|
18
|
|
|
* |
|
19
|
|
|
* @param string $value The sting to be encrypted |
|
20
|
|
|
* @param int $encryptionIterations The amount of iterations used for encryption, 13 by default, resulting in aprox. 0.5 seconds of encrypting. Each raise, will result in about double the time |
|
21
|
|
|
* @return string The hash |
|
22
|
|
|
*/ |
|
23
|
|
|
public function encrypt($value, $encryptionIterations = 13) |
|
24
|
|
|
{ |
|
25
|
|
|
$random = $this->getRandomBytes(16); |
|
26
|
|
|
$this->lastSalt = $this->getSalt($random, $encryptionIterations); |
|
27
|
|
|
$hash = crypt($value, $this->lastSalt); |
|
28
|
|
|
return $hash; |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* If on Linux, tries to use built in random byte feed |
|
33
|
|
|
* else generates its own feed |
|
34
|
|
|
* |
|
35
|
|
|
* @param int $count The amount of bytes to generates |
|
36
|
|
|
* @return string The bytes |
|
37
|
|
|
*/ |
|
38
|
|
|
private function getRandomBytes($count) |
|
39
|
|
|
{ |
|
40
|
|
|
$output = ''; |
|
41
|
|
|
$random_state = microtime(); |
|
42
|
|
|
|
|
43
|
|
|
$openBasedir = ini_get('open_basedir'); |
|
44
|
|
|
if (empty($openBasedir) && |
|
45
|
|
|
is_readable('/dev/urandom') && |
|
46
|
|
|
($fh = @fopen('/dev/urandom', 'rb'))) { |
|
47
|
|
|
$output = fread($fh, $count); |
|
48
|
|
|
fclose($fh); |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
if (strlen($output) < $count) { |
|
52
|
|
|
$output = ''; |
|
53
|
|
|
for ($i = 0; $i < $count; $i += 16) { |
|
54
|
|
|
$random_state = |
|
55
|
|
|
md5(microtime() . $random_state); |
|
56
|
|
|
$output .= |
|
57
|
|
|
pack('H*', md5($random_state)); |
|
58
|
|
|
} |
|
59
|
|
|
$output = substr($output, 0, $count); |
|
60
|
|
|
} |
|
61
|
|
|
|
|
62
|
|
|
return $output; |
|
63
|
|
|
} |
|
64
|
|
|
|
|
65
|
|
|
/** |
|
66
|
|
|
* Generates the salt used for encryption |
|
67
|
|
|
* |
|
68
|
|
|
* @param string $input Feed for iteration |
|
69
|
|
|
* @param int $iterations Amount of iterations |
|
70
|
|
|
* |
|
71
|
|
|
* @return string |
|
72
|
|
|
*/ |
|
73
|
|
|
private function getSalt($input, $iterations) |
|
74
|
|
|
{ |
|
75
|
|
|
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; |
|
76
|
|
|
|
|
77
|
|
|
$output = '$2a$'; |
|
78
|
|
|
$output .= chr(ord('0') + $iterations / 10); |
|
79
|
|
|
$output .= chr(ord('0') + $iterations % 10); |
|
80
|
|
|
$output .= '$'; |
|
81
|
|
|
|
|
82
|
|
|
$i = 0; |
|
83
|
|
|
do { |
|
84
|
|
|
$c1 = ord($input[$i++]); |
|
85
|
|
|
$output .= $itoa64[$c1 >> 2]; |
|
86
|
|
|
$c1 = ($c1 & 0x03) << 4; |
|
87
|
|
|
if ($i >= 16) { |
|
88
|
|
|
$output .= $itoa64[$c1]; |
|
89
|
|
|
break; |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
$c2 = ord($input[$i++]); |
|
93
|
|
|
$c1 |= $c2 >> 4; |
|
94
|
|
|
$output .= $itoa64[$c1]; |
|
95
|
|
|
$c1 = ($c2 & 0x0f) << 2; |
|
96
|
|
|
|
|
97
|
|
|
$c2 = ord($input[$i++]); |
|
98
|
|
|
$c1 |= $c2 >> 6; |
|
99
|
|
|
$output .= $itoa64[$c1]; |
|
100
|
|
|
$output .= $itoa64[$c2 & 0x3f]; |
|
101
|
|
|
} while (1); |
|
102
|
|
|
|
|
103
|
|
|
return $output; |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* Returns the last used salt for encryption |
|
108
|
|
|
* |
|
109
|
|
|
* @return string | NULL |
|
110
|
|
|
*/ |
|
111
|
|
|
public function getLastSalt() |
|
112
|
|
|
{ |
|
113
|
|
|
return $this->lastSalt; |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
|
|
/** |
|
117
|
|
|
* Compare the input with a known hash and salt |
|
118
|
|
|
* |
|
119
|
|
|
* @param $input |
|
120
|
|
|
* @param $hash |
|
121
|
|
|
* @param $salt |
|
122
|
|
|
* @return bool |
|
123
|
|
|
*/ |
|
124
|
|
|
public function compare($input, $hash, $salt) |
|
125
|
|
|
{ |
|
126
|
|
|
$newHash = crypt($input, $salt); |
|
127
|
|
|
return $newHash == $hash; |
|
128
|
|
|
} |
|
129
|
|
|
} |
|
130
|
|
|
} |
jenskooij /
cloudcontrol
