|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Key; |
|
4
|
|
|
|
|
5
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Adapter\EcAdapter; |
|
6
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Serializer\Key\PublicKeySerializer; |
|
7
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\Key; |
|
8
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface; |
|
9
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SignatureInterface; |
|
10
|
|
|
use BitWasp\Buffertools\BufferInterface; |
|
11
|
|
|
use Mdanter\Ecc\Primitives\PointInterface; |
|
12
|
|
|
|
|
13
|
|
|
class PublicKey extends Key implements PublicKeyInterface, \Mdanter\Ecc\Crypto\Key\PublicKeyInterface |
|
14
|
|
|
{ |
|
15
|
|
|
/** |
|
16
|
|
|
* @var EcAdapter |
|
17
|
|
|
*/ |
|
18
|
|
|
private $ecAdapter; |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* @var PointInterface |
|
22
|
|
|
*/ |
|
23
|
|
|
private $point; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var bool |
|
27
|
|
|
*/ |
|
28
|
|
|
private $compressed; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* @param EcAdapter $ecAdapter |
|
32
|
|
|
* @param PointInterface $point |
|
33
|
|
|
* @param bool $compressed |
|
34
|
|
|
*/ |
|
35
|
|
|
public function __construct( |
|
36
|
255 |
|
EcAdapter $ecAdapter, |
|
37
|
|
|
PointInterface $point, |
|
38
|
|
|
$compressed = false |
|
39
|
|
|
) { |
|
40
|
|
|
if (false === is_bool($compressed)) { |
|
41
|
255 |
|
throw new \InvalidArgumentException('PublicKey: Compressed must be a boolean'); |
|
42
|
|
|
} |
|
43
|
|
|
$this->ecAdapter = $ecAdapter; |
|
44
|
255 |
|
$this->point = $point; |
|
45
|
255 |
|
$this->compressed = $compressed; |
|
46
|
255 |
|
} |
|
47
|
255 |
|
|
|
48
|
|
|
/** |
|
49
|
|
|
* @return \Mdanter\Ecc\Primitives\GeneratorPoint |
|
50
|
|
|
*/ |
|
51
|
|
|
public function getGenerator() |
|
52
|
209 |
|
{ |
|
53
|
|
|
return $this->ecAdapter->getGenerator(); |
|
54
|
209 |
|
} |
|
55
|
|
|
|
|
56
|
|
|
/** |
|
57
|
|
|
* @return \Mdanter\Ecc\Primitives\CurveFpInterface |
|
58
|
|
|
*/ |
|
59
|
|
|
public function getCurve() |
|
60
|
|
|
{ |
|
61
|
|
|
return $this->ecAdapter->getGenerator()->getCurve(); |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
/** |
|
65
|
|
|
* @return PointInterface |
|
66
|
|
|
*/ |
|
67
|
|
|
public function getPoint() |
|
68
|
|
|
{ |
|
69
|
|
|
return $this->point; |
|
70
|
|
|
} |
|
71
|
4 |
|
|
|
72
|
|
|
/** |
|
73
|
4 |
|
* @param BufferInterface $msg32 |
|
74
|
4 |
|
* @param SignatureInterface $signature |
|
75
|
4 |
|
* @return bool |
|
76
|
|
|
*/ |
|
77
|
|
|
public function verify(BufferInterface $msg32, SignatureInterface $signature) |
|
78
|
|
|
{ |
|
79
|
|
|
return $this->ecAdapter->verify($msg32, $this, $signature); |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
2 |
|
/** |
|
83
|
|
|
* @param \GMP $tweak |
|
84
|
2 |
|
* @return PublicKeyInterface |
|
85
|
2 |
|
*/ |
|
86
|
|
|
public function tweakAdd(\GMP $tweak) |
|
87
|
|
|
{ |
|
88
|
|
|
$offset = $this->ecAdapter->getGenerator()->mul($tweak); |
|
89
|
|
|
$newPoint = $this->point->add($offset); |
|
90
|
|
|
return $this->ecAdapter->getPublicKey($newPoint, $this->compressed); |
|
91
|
|
|
} |
|
92
|
48 |
|
|
|
93
|
|
|
/** |
|
94
|
48 |
|
* @param \GMP $tweak |
|
95
|
48 |
|
* @return PublicKeyInterface |
|
96
|
3 |
|
*/ |
|
97
|
|
|
public function tweakMul(\GMP $tweak) |
|
98
|
|
|
{ |
|
99
|
48 |
|
$point = $this->point->mul($tweak); |
|
100
|
30 |
|
return $this->ecAdapter->getPublicKey($point, $this->compressed); |
|
101
|
|
|
} |
|
102
|
14 |
|
|
|
103
|
|
|
/** |
|
104
|
37 |
|
* @param BufferInterface $publicKey |
|
105
|
21 |
|
* @return bool |
|
106
|
21 |
|
*/ |
|
107
|
21 |
|
public static function isCompressedOrUncompressed(BufferInterface $publicKey) |
|
108
|
9 |
|
{ |
|
109
|
|
|
$vchPubKey = $publicKey->getBinary(); |
|
110
|
14 |
|
if ($publicKey->getSize() < self::LENGTH_COMPRESSED) { |
|
111
|
3 |
|
return false; |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
45 |
|
if ($vchPubKey[0] === self::KEY_UNCOMPRESSED) { |
|
115
|
|
|
if ($publicKey->getSize() !== self::LENGTH_UNCOMPRESSED) { |
|
116
|
|
|
// Invalid length for uncompressed key |
|
117
|
|
|
return false; |
|
118
|
|
|
} |
|
119
|
|
|
} elseif (in_array($vchPubKey[0], [ |
|
120
|
241 |
|
self::KEY_COMPRESSED_EVEN, |
|
121
|
|
|
self::KEY_COMPRESSED_ODD |
|
122
|
241 |
|
])) { |
|
123
|
|
|
if ($publicKey->getSize() !== self::LENGTH_COMPRESSED) { |
|
124
|
|
|
return false; |
|
125
|
|
|
} |
|
126
|
|
|
} else { |
|
127
|
|
|
return false; |
|
128
|
200 |
|
} |
|
129
|
|
|
|
|
130
|
200 |
|
return true; |
|
131
|
|
|
} |
|
132
|
|
|
|
|
133
|
|
|
/** |
|
134
|
|
|
* @return bool |
|
135
|
|
|
*/ |
|
136
|
|
|
public function isCompressed() |
|
137
|
|
|
{ |
|
138
|
|
|
return $this->compressed; |
|
139
|
|
|
} |
|
140
|
|
|
|
|
141
|
|
|
/** |
|
142
|
|
|
* @return BufferInterface |
|
143
|
|
|
*/ |
|
144
|
|
|
public function getBuffer() |
|
145
|
|
|
{ |
|
146
|
|
|
return (new PublicKeySerializer($this->ecAdapter))->serialize($this); |
|
147
|
|
|
} |
|
148
|
|
|
} |
|
149
|
|
|
|
Bit-Wasp /
bitcoin-php
