|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* Platine Security |
|
5
|
|
|
* |
|
6
|
|
|
* Platine Security provides a complete security system with encryption, hash support |
|
7
|
|
|
* |
|
8
|
|
|
* This content is released under the MIT License (MIT) |
|
9
|
|
|
* |
|
10
|
|
|
* Copyright (c) 2020 Platine Security |
|
11
|
|
|
* Copyright (c) 2013 G4Code |
|
12
|
|
|
* |
|
13
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy |
|
14
|
|
|
* of this software and associated documentation files (the "Software"), to deal |
|
15
|
|
|
* in the Software without restriction, including without limitation the rights |
|
16
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
17
|
|
|
* copies of the Software, and to permit persons to whom the Software is |
|
18
|
|
|
* furnished to do so, subject to the following conditions: |
|
19
|
|
|
* |
|
20
|
|
|
* The above copyright notice and this permission notice shall be included in all |
|
21
|
|
|
* copies or substantial portions of the Software. |
|
22
|
|
|
* |
|
23
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
24
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
25
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
26
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
27
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
28
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
|
29
|
|
|
* SOFTWARE. |
|
30
|
|
|
*/ |
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* @file Cipher.php |
|
34
|
|
|
* |
|
35
|
|
|
* The Cipher helper class |
|
36
|
|
|
* |
|
37
|
|
|
* @package Platine\Security\Encryption |
|
38
|
|
|
* @author Platine Developers Team |
|
39
|
|
|
* @copyright Copyright (c) 2020 |
|
40
|
|
|
* @license http://opensource.org/licenses/MIT MIT License |
|
41
|
|
|
* @link https://www.platine-php.com |
|
42
|
|
|
* @version 1.0.0 |
|
43
|
|
|
* @filesource |
|
44
|
|
|
*/ |
|
45
|
|
|
|
|
46
|
|
|
declare(strict_types=1); |
|
47
|
|
|
|
|
48
|
|
|
namespace Platine\Security\Encryption; |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* @class Cipher |
|
52
|
|
|
* @package Platine\Security\Encryption |
|
53
|
|
|
*/ |
|
54
|
|
|
class Cipher |
|
55
|
|
|
{ |
|
56
|
|
|
/** |
|
57
|
|
|
* The data to use for encryption/decryption |
|
58
|
|
|
* @var string |
|
59
|
|
|
*/ |
|
60
|
|
|
protected string $data; |
|
61
|
|
|
|
|
62
|
|
|
/** |
|
63
|
|
|
* The secret key |
|
64
|
|
|
* @var string |
|
65
|
|
|
*/ |
|
66
|
|
|
protected string $key; |
|
67
|
|
|
|
|
68
|
|
|
/** |
|
69
|
|
|
* The noised message |
|
70
|
|
|
* @var string |
|
71
|
|
|
*/ |
|
72
|
|
|
protected string $message = ''; |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* Create new instance |
|
76
|
|
|
* @param string $data |
|
77
|
|
|
* @param string $key |
|
78
|
|
|
*/ |
|
79
|
|
|
public function __construct(string $data, string $key) |
|
80
|
|
|
{ |
|
81
|
|
|
$this->data = $data; |
|
82
|
|
|
$this->key = sha1($key); |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
|
|
/** |
|
86
|
|
|
* Adds permuted noise to the IV + encrypted data to protect |
|
87
|
|
|
* against Man-in-the-middle attacks on CBC mode ciphers |
|
88
|
|
|
* @return string |
|
89
|
|
|
*/ |
|
90
|
|
|
public function addCipherNoise(): string |
|
91
|
|
|
{ |
|
92
|
|
|
$dataLength = strlen($this->data); |
|
93
|
|
|
$keyLength = strlen($this->key); |
|
94
|
|
|
|
|
95
|
|
|
for ( |
|
96
|
|
|
$i = 0, $j = 0, $ld = $dataLength, $lk = $keyLength; |
|
97
|
|
|
$i < $ld; |
|
98
|
|
|
++$i, ++$j |
|
99
|
|
|
) { |
|
100
|
|
|
if ($j >= $lk) { |
|
101
|
|
|
$j = 0; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
$this->message .= chr((ord($this->data[$i]) + ord($this->key[$j])) % 256); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
return $this->message; |
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
/** |
|
111
|
|
|
* Removes permuted noise from the IV + encrypted data |
|
112
|
|
|
* @return string |
|
113
|
|
|
*/ |
|
114
|
|
|
public function removeCipherNoise(): string |
|
115
|
|
|
{ |
|
116
|
|
|
$dataLength = strlen($this->data); |
|
117
|
|
|
$keyLength = strlen($this->key); |
|
118
|
|
|
|
|
119
|
|
|
for ( |
|
120
|
|
|
$i = 0, $j = 0, $ld = $dataLength, $lk = $keyLength; |
|
121
|
|
|
$i < $ld; |
|
122
|
|
|
++$i, ++$j |
|
123
|
|
|
) { |
|
124
|
|
|
if ($j >= $lk) { |
|
125
|
|
|
$j = 0; |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
|
|
$temp = ord($this->data[$i]) - ord($this->key[$j]); |
|
129
|
|
|
|
|
130
|
|
|
if ($temp < 0) { |
|
131
|
|
|
$temp += 256; |
|
132
|
|
|
} |
|
133
|
|
|
$this->message .= chr($temp); |
|
134
|
|
|
} |
|
135
|
|
|
|
|
136
|
|
|
return $this->message; |
|
137
|
|
|
} |
|
138
|
|
|
} |
|
139
|
|
|
|
platine-php /
security
