|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace MiladRahimi\Jwt\Cryptography\Algorithms\Hmac; |
|
6
|
|
|
|
|
7
|
|
|
use MiladRahimi\Jwt\Cryptography\Keys\HmacKey; |
|
8
|
|
|
use MiladRahimi\Jwt\Cryptography\Signer; |
|
9
|
|
|
use MiladRahimi\Jwt\Cryptography\Verifier; |
|
10
|
|
|
use MiladRahimi\Jwt\Exceptions\InvalidKeyException; |
|
11
|
|
|
use MiladRahimi\Jwt\Exceptions\InvalidSignatureException; |
|
12
|
|
|
use MiladRahimi\Jwt\Exceptions\SigningException; |
|
13
|
|
|
use ValueError; |
|
14
|
|
|
|
|
15
|
|
|
abstract class AbstractHmac implements Signer, Verifier |
|
16
|
|
|
{ |
|
17
|
|
|
protected static string $name; |
|
18
|
|
|
|
|
19
|
|
|
protected HmacKey $key; |
|
20
|
|
|
|
|
21
|
|
|
public function __construct(HmacKey $key) |
|
22
|
|
|
{ |
|
23
|
|
|
$this->key = $key; |
|
24
|
|
|
} |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* @inheritdoc |
|
28
|
|
|
*/ |
|
29
|
|
|
public function sign(string $message): string |
|
30
|
|
|
{ |
|
31
|
|
|
try { |
|
32
|
|
|
if (strlen($this->key->getContent()) < 32 || strlen($this->key->getContent()) > 6144) { |
|
33
|
|
|
throw new InvalidKeyException('Key length must be between 32 and 6144.'); |
|
34
|
|
|
} |
|
35
|
|
|
return hash_hmac($this->algorithm(), $message, $this->key->getContent(), true); |
|
36
|
|
|
} catch (ValueError | InvalidKeyException $e) { |
|
37
|
|
|
throw new SigningException('Cannot sign the signature.', 0, $e); |
|
38
|
|
|
} |
|
39
|
|
|
} |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* @inheritDoc |
|
43
|
|
|
*/ |
|
44
|
|
|
public function verify(string $plain, string $signature): void |
|
45
|
|
|
{ |
|
46
|
|
|
if ($signature !== $this->sign($plain)) { |
|
47
|
|
|
throw new InvalidSignatureException(); |
|
48
|
|
|
} |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* Generate algorithm name based on the key name |
|
53
|
|
|
*/ |
|
54
|
|
|
protected function algorithm(): string |
|
55
|
|
|
{ |
|
56
|
|
|
return 'sha' . substr($this->name(), 2); |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* @inheritDoc |
|
61
|
|
|
*/ |
|
62
|
|
|
public function name(): string |
|
63
|
|
|
{ |
|
64
|
|
|
return static::$name; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
/** |
|
68
|
|
|
* @inheritDoc |
|
69
|
|
|
*/ |
|
70
|
|
|
public function kid(): ?string |
|
71
|
|
|
{ |
|
72
|
|
|
return $this->key->getId(); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
public function getKey(): HmacKey |
|
76
|
|
|
{ |
|
77
|
|
|
return $this->key; |
|
78
|
|
|
} |
|
79
|
|
|
} |
|
80
|
|
|
|
miladrahimi /
php-jwt
