|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
/* |
|
6
|
|
|
* The MIT License (MIT) |
|
7
|
|
|
* |
|
8
|
|
|
* Copyright (c) 2014-2019 Spomky-Labs |
|
9
|
|
|
* |
|
10
|
|
|
* This software may be modified and distributed under the terms |
|
11
|
|
|
* of the MIT license. See the LICENSE file for details. |
|
12
|
|
|
*/ |
|
13
|
|
|
|
|
14
|
|
|
namespace Jose\Component\Signature\Algorithm; |
|
15
|
|
|
|
|
16
|
|
|
use Base64Url\Base64Url; |
|
17
|
|
|
use InvalidArgumentException; |
|
18
|
|
|
use Jose\Component\Core\JWK; |
|
19
|
|
|
use RuntimeException; |
|
20
|
|
|
|
|
21
|
|
|
final class EdDSA implements SignatureAlgorithm |
|
22
|
|
|
{ |
|
23
|
|
|
public function __construct() |
|
24
|
|
|
{ |
|
25
|
|
|
if (!\extension_loaded('sodium')) { |
|
26
|
|
|
throw new RuntimeException('The extension "sodium" is not available. Please install it to use this method'); |
|
27
|
|
|
} |
|
28
|
|
|
} |
|
29
|
|
|
|
|
30
|
|
|
public function allowedKeyTypes(): array |
|
31
|
|
|
{ |
|
32
|
|
|
return ['OKP']; |
|
33
|
|
|
} |
|
34
|
|
|
|
|
35
|
|
|
public function sign(JWK $key, string $input): string |
|
36
|
|
|
{ |
|
37
|
|
|
$this->checkKey($key); |
|
38
|
|
|
if (!$key->has('d')) { |
|
39
|
|
|
throw new InvalidArgumentException('The EC key is not private'); |
|
40
|
|
|
} |
|
41
|
|
|
$x = Base64Url::decode($key->get('x')); |
|
42
|
|
|
$d = Base64Url::decode($key->get('d')); |
|
43
|
|
|
$secret = $d.$x; |
|
44
|
|
|
|
|
45
|
|
|
switch ($key->get('crv')) { |
|
46
|
|
|
case 'Ed25519': |
|
47
|
|
|
return sodium_crypto_sign_detached($input, $secret); |
|
48
|
|
|
default: |
|
49
|
|
|
throw new InvalidArgumentException('Unsupported curve'); |
|
50
|
|
|
} |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
public function verify(JWK $key, string $input, string $signature): bool |
|
54
|
|
|
{ |
|
55
|
|
|
$this->checkKey($key); |
|
56
|
|
|
|
|
57
|
|
|
$public = Base64Url::decode($key->get('x')); |
|
58
|
|
|
|
|
59
|
|
|
switch ($key->get('crv')) { |
|
60
|
|
|
case 'Ed25519': |
|
61
|
|
|
return sodium_crypto_sign_verify_detached($signature, $input, $public); |
|
62
|
|
|
default: |
|
63
|
|
|
throw new InvalidArgumentException('Unsupported curve'); |
|
64
|
|
|
} |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
public function name(): string |
|
68
|
|
|
{ |
|
69
|
|
|
return 'EdDSA'; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
private function checkKey(JWK $key): void |
|
73
|
|
|
{ |
|
74
|
|
|
if (!\in_array($key->get('kty'), $this->allowedKeyTypes(), true)) { |
|
75
|
|
|
throw new InvalidArgumentException('Wrong key type.'); |
|
76
|
|
|
} |
|
77
|
|
|
foreach (['x', 'crv'] as $k) { |
|
78
|
|
|
if (!$key->has($k)) { |
|
79
|
|
|
throw new InvalidArgumentException(sprintf('The key parameter "%s" is missing.', $k)); |
|
80
|
|
|
} |
|
81
|
|
|
} |
|
82
|
|
|
if ('Ed25519' !== $key->get('crv')) { |
|
83
|
|
|
throw new InvalidArgumentException('Unsupported curve.'); |
|
84
|
|
|
} |
|
85
|
|
|
} |
|
86
|
|
|
} |
|
87
|
|
|
|
web-token /
jwt-framework
