|
1
|
|
|
<?php |
|
2
|
|
|
namespace Jsq\Cache\Envelope; |
|
3
|
|
|
|
|
4
|
|
|
use Jsq\Cache\EncryptedValue as BaseEncryptedValue; |
|
5
|
|
|
use Jsq\Cache\EncryptingItemDecorator as BaseItemDecorator; |
|
6
|
|
|
use Jsq\Cache\InvalidArgumentException; |
|
7
|
|
|
use Psr\Cache\CacheItemInterface; |
|
8
|
|
|
|
|
9
|
|
|
class EncryptingItemDecorator extends BaseItemDecorator |
|
10
|
|
|
{ |
|
11
|
|
|
/** @var resource */ |
|
12
|
|
|
private $publicKey; |
|
13
|
|
|
/** @var resource */ |
|
14
|
|
|
private $privateKey; |
|
15
|
|
|
|
|
16
|
171 |
|
public function __construct( |
|
17
|
|
|
CacheItemInterface $decorated, |
|
18
|
|
|
$certificate, |
|
19
|
|
|
$key, |
|
20
|
|
|
$passPhrase, |
|
21
|
|
|
$cipher |
|
22
|
|
|
) { |
|
23
|
171 |
|
parent::__construct($decorated, $cipher); |
|
24
|
171 |
|
$this->setPublicKey($certificate); |
|
25
|
165 |
|
$this->setPrivateKey($key, $passPhrase); |
|
26
|
162 |
|
} |
|
27
|
|
|
|
|
28
|
162 |
|
public function __destruct() |
|
29
|
|
|
{ |
|
30
|
162 |
|
openssl_pkey_free($this->publicKey); |
|
31
|
162 |
|
openssl_pkey_free($this->privateKey); |
|
32
|
162 |
|
} |
|
33
|
|
|
|
|
34
|
132 |
|
protected function isDecryptable() |
|
35
|
|
|
{ |
|
36
|
132 |
|
$data = $this->getDecorated()->get(); |
|
37
|
|
|
|
|
38
|
|
|
return $data instanceof EncryptedValue |
|
39
|
132 |
|
&& $this->validateSignature( |
|
40
|
93 |
|
$this->getKey() . $data->getCipherText(), |
|
41
|
93 |
|
$data->getSignature() |
|
42
|
132 |
|
); |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
111 |
|
protected function encrypt($data) |
|
46
|
|
|
{ |
|
47
|
111 |
|
$key = $this->generateIv(); |
|
48
|
111 |
|
$iv = $this->generateIv(); |
|
49
|
111 |
|
$cipherText = $this->encryptString(serialize($data), $key, $iv); |
|
50
|
|
|
|
|
51
|
111 |
|
return new EncryptedValue( |
|
52
|
111 |
|
$cipherText, |
|
53
|
111 |
|
$this->getCipherMethod(), |
|
54
|
111 |
|
$iv, |
|
55
|
111 |
|
$this->encryptEnvelopeKey($key), |
|
56
|
111 |
|
$this->signString($this->getKey() . $cipherText) |
|
57
|
111 |
|
); |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
66 |
|
protected function decrypt(BaseEncryptedValue $data) |
|
61
|
|
|
{ |
|
62
|
66 |
|
if (!$data instanceof EncryptedValue) return null; |
|
63
|
|
|
|
|
64
|
66 |
|
return unserialize($this->decryptString( |
|
65
|
66 |
|
$data->getCipherText(), |
|
66
|
66 |
|
$data->getMethod(), |
|
67
|
66 |
|
$this->decryptEnvelopeKey($data->getEnvelopeKey()), |
|
68
|
66 |
|
$data->getInitializationVector() |
|
69
|
66 |
|
)); |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
171 |
|
private function setPublicKey($cert) |
|
73
|
|
|
{ |
|
74
|
171 |
|
$publicKey = @openssl_pkey_get_public($cert); |
|
75
|
171 |
|
if (!$this->validateOpenSslKey($publicKey)) { |
|
76
|
6 |
|
throw new InvalidArgumentException('Unable to create public key' |
|
77
|
|
|
. ' from provided certificate. Certificate must be a valid x509' |
|
78
|
6 |
|
. ' certificate, a PEM encoded certificate, or a path to a file' |
|
79
|
6 |
|
. ' containing a PEM encoded certificate.'); |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
165 |
|
$this->publicKey = $publicKey; |
|
83
|
165 |
|
} |
|
84
|
|
|
|
|
85
|
165 |
|
private function setPrivateKey($key, $passPhrase) |
|
86
|
|
|
{ |
|
87
|
165 |
|
$this->privateKey = @openssl_pkey_get_private($key, $passPhrase); |
|
88
|
165 |
|
if (!$this->validateOpenSslKey($this->privateKey)) { |
|
89
|
3 |
|
throw new InvalidArgumentException('Unable to create private key' |
|
90
|
|
|
. ' from provided key. Key must be a PEM encoded private key or' |
|
91
|
3 |
|
. ' a path to a file containing a PEM encoded private key.'); |
|
92
|
|
|
} |
|
93
|
162 |
|
} |
|
94
|
|
|
|
|
95
|
171 |
|
private function validateOpenSslKey($key) |
|
96
|
|
|
{ |
|
97
|
171 |
|
return is_resource($key) && 'OpenSSL key' === get_resource_type($key); |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
111 |
|
private function signString($string) |
|
101
|
|
|
{ |
|
102
|
111 |
|
openssl_sign($string, $signature, $this->privateKey); |
|
103
|
|
|
|
|
104
|
111 |
|
return $signature; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
93 |
|
private function validateSignature($signed, $signature) |
|
108
|
|
|
{ |
|
109
|
93 |
|
return openssl_verify($signed, $signature, $this->publicKey); |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
111 |
|
private function encryptEnvelopeKey($key) |
|
113
|
|
|
{ |
|
114
|
111 |
|
openssl_public_encrypt($key, $sealedKey, $this->publicKey); |
|
115
|
|
|
|
|
116
|
111 |
|
return $sealedKey; |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
66 |
|
private function decryptEnvelopeKey($sealedKey) |
|
120
|
|
|
{ |
|
121
|
66 |
|
openssl_private_decrypt($sealedKey, $key, $this->privateKey); |
|
122
|
|
|
|
|
123
|
66 |
|
return $key; |
|
124
|
|
|
} |
|
125
|
|
|
} |
|
126
|
|
|
|
jeskew /
psr6-encrypting-decorator
