|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* The MIT License (MIT) |
|
5
|
|
|
* |
|
6
|
|
|
* Copyright (c) 2014-2015 Spomky-Labs |
|
7
|
|
|
* |
|
8
|
|
|
* This software may be modified and distributed under the terms |
|
9
|
|
|
* of the MIT license. See the LICENSE file for details. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
namespace Jose\Algorithm\Signature; |
|
13
|
|
|
|
|
14
|
|
|
use Base64Url\Base64Url; |
|
15
|
|
|
use Jose\Object\JWKInterface; |
|
16
|
|
|
use Mdanter\Ecc\Crypto\Signature\Signature; |
|
17
|
|
|
use Mdanter\Ecc\EccFactory; |
|
18
|
|
|
use Mdanter\Ecc\Random\RandomGeneratorFactory; |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* Class ECDSA. |
|
22
|
|
|
*/ |
|
23
|
|
|
abstract class ECDSA implements SignatureInterface |
|
24
|
|
|
{ |
|
25
|
|
|
/** |
|
26
|
|
|
* @var \Mdanter\Ecc\Math\MathAdapterInterface |
|
27
|
|
|
*/ |
|
28
|
|
|
private $adapter; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* |
|
32
|
|
|
*/ |
|
33
|
|
|
public function __construct() |
|
34
|
|
|
{ |
|
35
|
|
|
$this->adapter = EccFactory::getAdapter(); |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* {@inheritdoc} |
|
40
|
|
|
*/ |
|
41
|
|
|
public function sign(JWKInterface $key, $data) |
|
42
|
|
|
{ |
|
43
|
|
|
$this->checkKey($key); |
|
44
|
|
|
if (!$key->has('d')) { |
|
45
|
|
|
throw new \InvalidArgumentException('The EC key is not private'); |
|
46
|
|
|
} |
|
47
|
|
|
|
|
48
|
|
|
$p = $this->getGenerator(); |
|
49
|
|
|
$d = $this->convertBase64ToDec($key->get('d')); |
|
50
|
|
|
$hash = $this->convertHexToDec(hash($this->getHashAlgorithm(), $data)); |
|
51
|
|
|
|
|
52
|
|
|
$k = RandomGeneratorFactory::getRandomGenerator()->generate($p->getOrder()); |
|
53
|
|
|
|
|
54
|
|
|
$signer = EccFactory::getSigner(); |
|
55
|
|
|
|
|
56
|
|
|
$private_key = $p->getPrivateKeyFrom($d); |
|
57
|
|
|
$signature = $signer->sign($private_key, $hash, $k); |
|
58
|
|
|
|
|
59
|
|
|
$part_length = $this->getSignaturePartLength(); |
|
60
|
|
|
|
|
61
|
|
|
$R = str_pad($this->convertDecToHex($signature->getR()), $part_length, '0', STR_PAD_LEFT); |
|
62
|
|
|
$S = str_pad($this->convertDecToHex($signature->getS()), $part_length, '0', STR_PAD_LEFT); |
|
63
|
|
|
|
|
64
|
|
|
return $this->convertHextoBin($R.$S); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
/** |
|
68
|
|
|
* {@inheritdoc} |
|
69
|
|
|
*/ |
|
70
|
|
|
public function verify(JWKInterface $key, $data, $signature) |
|
71
|
|
|
{ |
|
72
|
|
|
$this->checkKey($key); |
|
73
|
|
|
|
|
74
|
|
|
$signature = $this->convertBinToHex($signature); |
|
75
|
|
|
$part_length = $this->getSignaturePartLength(); |
|
76
|
|
|
if (strlen($signature) !== 2 * $part_length) { |
|
77
|
|
|
return false; |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
$p = $this->getGenerator(); |
|
81
|
|
|
$x = $this->convertBase64ToDec($key->get('x')); |
|
82
|
|
|
$y = $this->convertBase64ToDec($key->get('y')); |
|
83
|
|
|
$R = $this->convertHexToDec(substr($signature, 0, $part_length)); |
|
84
|
|
|
$S = $this->convertHexToDec(substr($signature, $part_length)); |
|
85
|
|
|
$hash = $this->convertHexToDec(hash($this->getHashAlgorithm(), $data)); |
|
86
|
|
|
|
|
87
|
|
|
$public_key = $p->getPublicKeyFrom($x, $y); |
|
88
|
|
|
|
|
89
|
|
|
$signer = EccFactory::getSigner(); |
|
90
|
|
|
|
|
91
|
|
|
return $signer->verify($public_key, new Signature($R, $S), $hash); |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* @return \Mdanter\Ecc\Primitives\GeneratorPoint |
|
96
|
|
|
*/ |
|
97
|
|
|
abstract protected function getGenerator(); |
|
98
|
|
|
|
|
99
|
|
|
/** |
|
100
|
|
|
* @return string |
|
101
|
|
|
*/ |
|
102
|
|
|
abstract protected function getHashAlgorithm(); |
|
103
|
|
|
|
|
104
|
|
|
/** |
|
105
|
|
|
* @return int |
|
106
|
|
|
*/ |
|
107
|
|
|
abstract protected function getSignaturePartLength(); |
|
108
|
|
|
|
|
109
|
|
|
/** |
|
110
|
|
|
* @param string $value |
|
111
|
|
|
* |
|
112
|
|
|
* @return string |
|
113
|
|
|
*/ |
|
114
|
|
|
private function convertHexToBin($value) |
|
115
|
|
|
{ |
|
116
|
|
|
return pack('H*', $value); |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
|
|
/** |
|
120
|
|
|
* @param string $value |
|
121
|
|
|
*/ |
|
122
|
|
|
private function convertBinToHex($value) |
|
123
|
|
|
{ |
|
124
|
|
|
$value = unpack('H*', $value); |
|
125
|
|
|
|
|
126
|
|
|
return $value[1]; |
|
127
|
|
|
} |
|
128
|
|
|
|
|
129
|
|
|
/** |
|
130
|
|
|
* @param $value |
|
131
|
|
|
* |
|
132
|
|
|
* @return string |
|
133
|
|
|
*/ |
|
134
|
|
|
private function convertDecToHex($value) |
|
135
|
|
|
{ |
|
136
|
|
|
return $this->adapter->decHex($value); |
|
137
|
|
|
} |
|
138
|
|
|
|
|
139
|
|
|
/** |
|
140
|
|
|
* @param $value |
|
141
|
|
|
* |
|
142
|
|
|
* @return int|string |
|
143
|
|
|
*/ |
|
144
|
|
|
private function convertHexToDec($value) |
|
145
|
|
|
{ |
|
146
|
|
|
return $this->adapter->hexDec($value); |
|
147
|
|
|
} |
|
148
|
|
|
|
|
149
|
|
|
/** |
|
150
|
|
|
* @param $value |
|
151
|
|
|
* |
|
152
|
|
|
* @return int|string |
|
153
|
|
|
*/ |
|
154
|
|
|
private function convertBase64ToDec($value) |
|
155
|
|
|
{ |
|
156
|
|
|
$value = unpack('H*', Base64Url::decode($value)); |
|
157
|
|
|
|
|
158
|
|
|
return $this->convertHexToDec($value[1]); |
|
159
|
|
|
} |
|
160
|
|
|
|
|
161
|
|
|
/** |
|
162
|
|
|
* @param JWKInterface $key |
|
163
|
|
|
*/ |
|
164
|
|
|
private function checkKey(JWKInterface $key) |
|
165
|
|
|
{ |
|
166
|
|
|
if (!$key->has('kty') || 'EC' !== $key->get('kty')) { |
|
167
|
|
|
throw new \InvalidArgumentException('The key is not valid'); |
|
168
|
|
|
} |
|
169
|
|
|
if (!$key->has('x') || !$key->has('y') || !$key->has('crv')) { |
|
170
|
|
|
throw new \InvalidArgumentException('Key components ("x", "y" or "crv") missing'); |
|
171
|
|
|
} |
|
172
|
|
|
} |
|
173
|
|
|
} |
|
174
|
|
|
|
Spomky-Labs /
jose
