1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
<?php
namespace Zotlabs\Lib;
use phpseclib3\Crypt\PublicKeyLoader;
use phpseclib3\Math\BigInteger;
/**
* Keyutils
* Convert RSA keys between various formats
*/
class Keyutils {
/**
* @param string $m modulo
* @param string $e exponent
* @return string
*/
public static function meToPem(string $m, string $e): string
{
$parsedKey = PublicKeyLoader::load([
'e' => new BigInteger($e, 256),
'n' => new BigInteger($m, 256)
]);
if (method_exists($parsedKey, 'getPublicKey')) {
$parsedKey = $parsedKey->getPublicKey();
}
return $parsedKey->toString('PKCS8');
}
/**
* @param string key
* @return string
*/
public static function rsaToPem(string $key): string
{
$parsedKey = PublicKeyLoader::load($key);
if (method_exists($parsedKey, 'getPublicKey')) {
$parsedKey = $parsedKey->getPublicKey();
}
return $parsedKey->toString('PKCS8');
}
/**
* @param string key
* @return string
*/
public static function pemToRsa(string $key): string
{
$parsedKey = PublicKeyLoader::load($key);
if (method_exists($parsedKey, 'getPublicKey')) {
$parsedKey = $parsedKey->getPublicKey();
}
return $parsedKey->toString('PKCS1');
}
/**
* @param string $key key
* @param string $m reference modulo
* @param string $e reference exponent
*/
public static function pemToMe(string $key): array
{
$parsedKey = PublicKeyLoader::load($key);
if (method_exists($parsedKey, 'getPublicKey')) {
$parsedKey = $parsedKey->getPublicKey();
}
$raw = $parsedKey->toString('Raw');
$m = $raw['n'];
$e = $raw['e'];
return [$m->toBytes(), $e->toBytes()];
}
/**
* @param string $pubkey
* @return string
*/
public static function salmonKey(string $pubkey): string
{
[$m, $e] = self::pemToMe($pubkey);
/** @noinspection PhpRedundantOptionalArgumentInspection */
return 'RSA' . '.' . base64url_encode($m, true) . '.' . base64url_encode($e, true);
}
/**
* @param string $key
* @return string
*/
public static function convertSalmonKey(string $key): string
{
if (str_contains($key, ',')) {
$rawkey = substr($key, strpos($key, ',') + 1);
} else {
$rawkey = substr($key, 5);
}
$key_info = explode('.', $rawkey);
$m = base64url_decode($key_info[1]);
$e = base64url_decode($key_info[2]);
return self::meToPem($m, $e);
}
}
|
