|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace SimpleSAML\XMLSecurity\XML; |
|
6
|
|
|
|
|
7
|
|
|
use Exception; |
|
8
|
|
|
use SimpleSAML\Assert\Assert; |
|
9
|
|
|
use SimpleSAML\XMLSecurity\XML\ds\Signature; |
|
10
|
|
|
use SimpleSAML\XMLSecurity\XML\SignedElementInterface; |
|
11
|
|
|
use SimpleSAML\XMLSecurity\XMLSecurityKey; |
|
12
|
|
|
|
|
13
|
|
|
/** |
|
14
|
|
|
* Helper trait for processing signed elements. |
|
15
|
|
|
* |
|
16
|
|
|
* @package simplesamlphp/xml-security |
|
17
|
|
|
*/ |
|
18
|
|
|
trait SignedElementTrait |
|
19
|
|
|
{ |
|
20
|
|
|
/** |
|
21
|
|
|
* The signature of this element. |
|
22
|
|
|
* |
|
23
|
|
|
* @var \SimpleSAML\XMLSecurity\XML\ds\Signature $signature |
|
24
|
|
|
*/ |
|
25
|
|
|
protected Signature $signature; |
|
26
|
|
|
|
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* Get the signature element of this object. |
|
30
|
|
|
* |
|
31
|
|
|
* @return \SimpleSAML\XMLSecurity\XML\ds\Signature |
|
32
|
|
|
*/ |
|
33
|
|
|
public function getSignature(): ?Signature |
|
34
|
|
|
{ |
|
35
|
|
|
return $this->signature; |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* Initialize a signed element from XML. |
|
41
|
|
|
* |
|
42
|
|
|
* @param \SimpleSAML\XMLSecurity\XML\ds\Signature $signature The ds:Signature object |
|
43
|
|
|
*/ |
|
44
|
|
|
protected function setSignature(Signature $signature): void |
|
45
|
|
|
{ |
|
46
|
|
|
$this->signature = $signature; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* Validate this element against a public key. |
|
52
|
|
|
* |
|
53
|
|
|
* true is returned on success, false is returned if we don't have any |
|
54
|
|
|
* signature we can validate. An exception is thrown if the signature |
|
55
|
|
|
* validation fails. |
|
56
|
|
|
* |
|
57
|
|
|
* @param \SimpleSAML\XMLSecurity\XMLSecurityKey $key The key we should check against. |
|
58
|
|
|
* @return \SimpleSAML\XMLSecurity\XML\SignedElementInterface The Signed element if it was validated. |
|
59
|
|
|
* @throws \Exception |
|
60
|
|
|
*/ |
|
61
|
|
|
public function validate(XMLSecurityKey $key): SignedElementInterface |
|
62
|
|
|
{ |
|
63
|
|
|
if ($this->signature === null) { |
|
64
|
|
|
throw new Exception("Unsigned element"); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
Assert::eq( |
|
68
|
|
|
$key->getAlgorithm(), |
|
69
|
|
|
$this->signature->getAlgorithm(), |
|
|
|
|
|
|
70
|
|
|
'Algorithm provided in key does not match algorithm used in signature.' |
|
71
|
|
|
); |
|
72
|
|
|
|
|
73
|
|
|
// check the signature |
|
74
|
|
|
$signer = $this->signature->getSigner(); |
|
|
|
|
|
|
75
|
|
|
if ($signer->verify($key) === 1) { |
|
76
|
|
|
return $this->getElement(); |
|
|
|
|
|
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
|
|
throw new Exception("Unable to validate Signature"); |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* Retrieve certificates that sign this element. |
|
85
|
|
|
* |
|
86
|
|
|
* @return array Array with certificates. |
|
87
|
|
|
* @throws \Exception if an error occurs while trying to extract the public key from a certificate. |
|
88
|
|
|
*/ |
|
89
|
|
|
public function getValidatingCertificates(): array |
|
90
|
|
|
{ |
|
91
|
|
|
$ret = []; |
|
92
|
|
|
foreach ($this->signature->getCertificates() as $cert) { |
|
|
|
|
|
|
93
|
|
|
// extract the public key from the certificate for validation. |
|
94
|
|
|
$key = new XMLSecurityKey($this->signature->getAlgorithm(), ['type' => 'public']); |
|
95
|
|
|
$key->loadKey($cert); |
|
96
|
|
|
|
|
97
|
|
|
try { |
|
98
|
|
|
// check the signature. |
|
99
|
|
|
if ($this->validate($key)) { |
|
100
|
|
|
$ret[] = $cert; |
|
101
|
|
|
} |
|
102
|
|
|
} catch (Exception $e) { |
|
103
|
|
|
// this certificate does not sign this element. |
|
104
|
|
|
} |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
return $ret; |
|
108
|
|
|
} |
|
109
|
|
|
} |
|
110
|
|
|
|
simplesamlphp /
xml-security
Loading history...
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.