|
1
|
|
|
<?php |
|
2
|
|
|
namespace Jsq\Iron; |
|
3
|
|
|
|
|
4
|
|
|
class Iron |
|
5
|
|
|
{ |
|
6
|
|
|
const DEFAULT_ENCRYPTION_METHOD = 'aes-256-cbc'; |
|
7
|
|
|
|
|
8
|
|
|
/** @var string */ |
|
9
|
|
|
private $method; |
|
10
|
|
|
|
|
11
|
|
|
/** |
|
12
|
|
|
* @param string $encryptionMethod |
|
13
|
|
|
*/ |
|
14
|
|
|
public function __construct( |
|
15
|
|
|
$encryptionMethod = self::DEFAULT_ENCRYPTION_METHOD |
|
16
|
|
|
) { |
|
17
|
|
|
$this->method = $encryptionMethod; |
|
18
|
|
|
} |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* @param string|PasswordInterface $password |
|
22
|
|
|
* @param string $data |
|
23
|
|
|
* @param int $ttl |
|
24
|
|
|
* |
|
25
|
|
|
* @return Token |
|
26
|
|
|
*/ |
|
27
|
|
|
public function encrypt($password, $data, $ttl = 0) |
|
28
|
|
|
{ |
|
29
|
|
|
$password = normalize_password($password); |
|
30
|
|
|
$salt = generate_salt(); |
|
31
|
|
|
$iv = random_bytes(openssl_cipher_iv_length($this->method)); |
|
32
|
|
|
|
|
33
|
|
|
return new Token( |
|
34
|
|
|
$password, |
|
35
|
|
|
$salt, |
|
36
|
|
|
$iv, |
|
37
|
|
|
$this->generateCipherText(json_encode($data), $password, $salt, $iv), |
|
38
|
|
|
$ttl ? time() + $ttl : $ttl |
|
39
|
|
|
); |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* @param string|PasswordInterface $password |
|
44
|
|
|
* @param string|Token $data |
|
45
|
|
|
* |
|
46
|
|
|
* @return string |
|
47
|
|
|
*/ |
|
48
|
|
|
public function decrypt($password, $data) |
|
49
|
|
|
{ |
|
50
|
|
|
$password = normalize_password($password); |
|
51
|
|
|
$token = $this->normalizeToken($password, $data); |
|
52
|
|
|
|
|
53
|
|
|
return $this->decryptToken($token, $password); |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
|
|
public function decryptToken(Token $token, PasswordInterface $password) |
|
57
|
|
|
{ |
|
58
|
|
|
return json_decode(openssl_decrypt( |
|
59
|
|
|
$token->getCipherText(), |
|
60
|
|
|
$this->method, |
|
61
|
|
|
generate_key($password, $token->getSalt()), |
|
62
|
|
|
true, |
|
63
|
|
|
$token->getIv() |
|
64
|
|
|
), true); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
private function normalizeToken(PasswordInterface $password, $token) |
|
68
|
|
|
{ |
|
69
|
|
|
if ($token instanceof Token) { |
|
70
|
|
|
return $token; |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
|
|
return Token::fromSealed($password, $token); |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
private function generateCipherText( |
|
77
|
|
|
$data, |
|
78
|
|
|
PasswordInterface $password, |
|
79
|
|
|
$salt, |
|
80
|
|
|
$iv |
|
81
|
|
|
) { |
|
82
|
|
|
return openssl_encrypt( |
|
83
|
|
|
$data, |
|
84
|
|
|
$this->method, |
|
85
|
|
|
generate_key($password, $salt), |
|
86
|
|
|
true, |
|
87
|
|
|
$iv |
|
88
|
|
|
); |
|
89
|
|
|
} |
|
90
|
|
|
} |
|
91
|
|
|
|
jeskew /
iron-php
