|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Signature; |
|
4
|
|
|
|
|
5
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Adapter\EcAdapter; |
|
6
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Serializer\Signature\DerSignatureSerializer; |
|
7
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SignatureInterface; |
|
|
|
|
|
|
8
|
|
|
use BitWasp\Bitcoin\Serializable; |
|
9
|
|
|
|
|
10
|
|
|
class Signature extends Serializable implements SignatureInterface |
|
11
|
|
|
{ |
|
12
|
|
|
/** |
|
13
|
|
|
* @var \GMP |
|
14
|
|
|
*/ |
|
15
|
|
|
private $r; |
|
16
|
|
|
|
|
17
|
|
|
/** |
|
18
|
|
|
* @var \GMP |
|
19
|
|
|
*/ |
|
20
|
|
|
private $s; |
|
21
|
|
|
|
|
22
|
|
|
/** |
|
23
|
|
|
* @var EcAdapter |
|
24
|
|
|
*/ |
|
25
|
|
|
private $ecAdapter; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* @var resource |
|
29
|
|
|
*/ |
|
30
|
|
|
private $secp256k1_sig; |
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* @param EcAdapter $adapter |
|
34
|
|
|
* @param \GMP $r |
|
35
|
|
|
* @param \GMP $s |
|
36
|
|
|
* @param resource $secp256k1_ecdsa_signature_t |
|
37
|
|
|
*/ |
|
38
|
104 |
|
public function __construct(EcAdapter $adapter, \GMP $r, \GMP $s, $secp256k1_ecdsa_signature_t) |
|
39
|
|
|
{ |
|
40
|
104 |
|
if (!is_resource($secp256k1_ecdsa_signature_t) || |
|
41
|
104 |
|
!get_resource_type($secp256k1_ecdsa_signature_t) === SECP256K1_TYPE_SIG |
|
42
|
|
|
) { |
|
43
|
|
|
throw new \InvalidArgumentException('Secp256k1\Signature\Signature expects ' . SECP256K1_TYPE_SIG . ' resource'); |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
104 |
|
$this->secp256k1_sig = $secp256k1_ecdsa_signature_t; |
|
47
|
104 |
|
$this->ecAdapter = $adapter; |
|
48
|
104 |
|
$this->r = $r; |
|
49
|
104 |
|
$this->s = $s; |
|
50
|
104 |
|
} |
|
51
|
|
|
|
|
52
|
|
|
/** |
|
53
|
|
|
* @return \GMP |
|
54
|
|
|
*/ |
|
55
|
3 |
|
public function getR() |
|
56
|
|
|
{ |
|
57
|
3 |
|
return $this->r; |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* @return \GMP |
|
62
|
|
|
*/ |
|
63
|
3 |
|
public function getS() |
|
64
|
|
|
{ |
|
65
|
3 |
|
return $this->s; |
|
66
|
|
|
} |
|
67
|
|
|
|
|
68
|
|
|
/** |
|
69
|
|
|
* @return resource |
|
70
|
|
|
*/ |
|
71
|
92 |
|
public function getResource() |
|
72
|
|
|
{ |
|
73
|
92 |
|
return $this->secp256k1_sig; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* @param Signature $other |
|
78
|
|
|
* @return bool |
|
79
|
|
|
*/ |
|
80
|
25 |
|
private function doEquals(Signature $other) |
|
81
|
|
|
{ |
|
82
|
25 |
|
$a = ''; |
|
83
|
25 |
|
$b = ''; |
|
84
|
25 |
|
secp256k1_ecdsa_signature_serialize_der($this->ecAdapter->getContext(), $a, $this->getResource()); |
|
85
|
25 |
|
secp256k1_ecdsa_signature_serialize_der($this->ecAdapter->getContext(), $b, $other->getResource()); |
|
86
|
|
|
|
|
87
|
25 |
|
return $a === $b; |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* @param SignatureInterface $signature |
|
92
|
|
|
* @return bool |
|
93
|
|
|
*/ |
|
94
|
25 |
|
public function equals(SignatureInterface $signature) |
|
95
|
|
|
{ |
|
96
|
|
|
/** @var Signature $signature */ |
|
97
|
25 |
|
return $this->doEquals($signature); |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
|
|
/** |
|
101
|
|
|
* @return \BitWasp\Buffertools\BufferInterface |
|
102
|
|
|
*/ |
|
103
|
|
|
public function getBuffer() |
|
104
|
|
|
{ |
|
105
|
|
|
return (new DerSignatureSerializer($this->ecAdapter))->serialize($this); |
|
106
|
|
|
} |
|
107
|
|
|
} |
|
108
|
|
|
|
Bit-Wasp /
bitcoin-php
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: