|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* PhPsst. |
|
4
|
|
|
* |
|
5
|
|
|
* @copyright Copyright (c) 2016 Felix Sandström |
|
6
|
|
|
* @license MIT |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
namespace PhPsst; |
|
10
|
|
|
|
|
11
|
|
|
use Illuminate\Encryption\Encrypter; |
|
12
|
|
|
use PhPsst\Storage\StorageInterface; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* A PHP library for distributing (one time) passwords/secrets in a more secure way. |
|
16
|
|
|
* |
|
17
|
|
|
* @author Felix Sandström <http://github.com/felixsand> |
|
18
|
|
|
*/ |
|
19
|
|
|
class PhPsst |
|
20
|
|
|
{ |
|
21
|
|
|
/** |
|
22
|
|
|
* @var StorageInterface |
|
23
|
|
|
*/ |
|
24
|
|
|
protected $storage; |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* @var string |
|
28
|
|
|
*/ |
|
29
|
|
|
protected $cipher; |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* @const string |
|
33
|
|
|
*/ |
|
34
|
|
|
const CIPHER_DEFAULT = 'AES-256-CBC'; |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* PhPsst constructor. |
|
38
|
|
|
* @param StorageInterface $storage |
|
39
|
|
|
* @param string $cipher |
|
40
|
|
|
*/ |
|
41
|
5 |
|
public function __construct(StorageInterface $storage, $cipher = null) |
|
42
|
|
|
{ |
|
43
|
5 |
|
$this->storage = $storage; |
|
44
|
5 |
|
if ($cipher !== null) { |
|
45
|
1 |
|
$this->cipher = $cipher; |
|
46
|
1 |
|
} else { |
|
47
|
5 |
|
$this->cipher = self::CIPHER_DEFAULT; |
|
48
|
|
|
} |
|
49
|
5 |
|
} |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* @param string $password |
|
53
|
|
|
* @param int $ttl |
|
54
|
|
|
* @param int $views |
|
55
|
|
|
* @return string |
|
56
|
|
|
*/ |
|
57
|
7 |
|
public function store($password, $ttl = 3600, $views = 1) |
|
58
|
|
|
{ |
|
59
|
7 |
|
if (empty($password)) { |
|
60
|
1 |
|
throw new \InvalidArgumentException('The password has to be set'); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
6 |
|
$ttl = (int) $ttl; |
|
64
|
6 |
|
if ($ttl < 1) { |
|
65
|
1 |
|
throw new \InvalidArgumentException('TTL has to be higher than 0'); |
|
66
|
|
|
} |
|
67
|
|
|
|
|
68
|
5 |
|
$views = (int) $views; |
|
69
|
5 |
|
if ($views < 1) { |
|
70
|
1 |
|
throw new \InvalidArgumentException('Views has to be highter han 0'); |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
4 |
|
$id = uniqid(); |
|
74
|
4 |
|
$key = bin2hex(random_bytes(16)); |
|
75
|
4 |
|
$encrypter = new Encrypter($key, $this->cipher); |
|
76
|
|
|
|
|
77
|
4 |
|
$this->storage->store(new Password($id, $encrypter->encrypt($password), $ttl, $views)); |
|
78
|
|
|
|
|
79
|
4 |
|
return $id . ';' . $key; |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
/** |
|
83
|
|
|
* @param $secret |
|
84
|
|
|
* @return string |
|
85
|
|
|
*/ |
|
86
|
6 |
|
public function retrieve($secret) |
|
87
|
|
|
{ |
|
88
|
6 |
|
if (!($idKeyArray = explode(';', $secret)) || count($idKeyArray) != 2) { |
|
89
|
1 |
|
throw new \InvalidArgumentException('Invalid secret'); |
|
90
|
|
|
} |
|
91
|
5 |
|
list($id, $key) = $idKeyArray; |
|
92
|
|
|
|
|
93
|
5 |
|
if (!($password = $this->storage->get($id))) { |
|
94
|
1 |
|
throw new PhPsstException('No password with that ID found', PhPsstException::NO_PASSWORD_WITH_ID_FOUND); |
|
95
|
|
|
} |
|
96
|
4 |
|
$encrypter = new Encrypter($key, $this->cipher); |
|
97
|
|
|
|
|
98
|
4 |
|
$password->decreaseViews(); |
|
99
|
4 |
|
if ($password->getViews() > 0) { |
|
100
|
2 |
|
$this->storage->store($password, true); |
|
101
|
2 |
|
} else { |
|
102
|
2 |
|
$this->storage->delete($password); |
|
103
|
|
|
} |
|
104
|
|
|
|
|
105
|
4 |
|
return $encrypter->decrypt($password->getPassword()); |
|
106
|
|
|
} |
|
107
|
|
|
} |
|
108
|
|
|
|
felixsand /
PhPsst
