|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace MadWizard\WebAuthn\Attestation\Tpm; |
|
4
|
|
|
|
|
5
|
|
|
use MadWizard\WebAuthn\Exception\UnsupportedException; |
|
6
|
|
|
use MadWizard\WebAuthn\Format\ByteBuffer; |
|
7
|
|
|
|
|
8
|
|
|
/** |
|
9
|
|
|
* Represents TPMPS_ECC_PARMS structure. |
|
10
|
|
|
*/ |
|
11
|
|
|
final class TpmEccParameters implements KeyParametersInterface |
|
12
|
|
|
{ |
|
13
|
|
|
/** |
|
14
|
|
|
* @var int |
|
15
|
|
|
*/ |
|
16
|
|
|
private $symmetric; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* @var int |
|
20
|
|
|
*/ |
|
21
|
|
|
private $scheme; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @var int |
|
25
|
|
|
*/ |
|
26
|
|
|
private $curveId; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* @var int |
|
30
|
|
|
*/ |
|
31
|
|
|
private $kdf; |
|
32
|
|
|
|
|
33
|
|
|
public const TPM_ECC_NIST_P256 = 0x0003; |
|
34
|
|
|
|
|
35
|
|
|
public const TPM_ECC_BN_P256 = 0x0010; |
|
36
|
|
|
|
|
37
|
|
|
public const TPM_ECC_SM2_P256 = 0x0020; |
|
38
|
|
|
|
|
39
|
1 |
|
public function __construct(int $symmetric, int $scheme, int $curveId, int $kdf) |
|
40
|
|
|
{ |
|
41
|
1 |
|
$this->symmetric = $symmetric; |
|
42
|
1 |
|
$this->scheme = $scheme; |
|
43
|
1 |
|
$this->curveId = $curveId; |
|
44
|
1 |
|
$this->kdf = $kdf; |
|
45
|
1 |
|
} |
|
46
|
|
|
|
|
47
|
1 |
|
public function getAlgorithm(): int |
|
48
|
|
|
{ |
|
49
|
1 |
|
return TpmPublic::TPM_ALG_ECC; |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
1 |
|
public static function parse(ByteBuffer $buffer, int $offset, ?int &$endOffset): KeyParametersInterface |
|
53
|
|
|
{ |
|
54
|
1 |
|
$symmetric = $buffer->getUint16Val($offset); |
|
55
|
1 |
|
if ($symmetric !== TpmPublic::TPM_ALG_NULL) { |
|
56
|
|
|
// Values other than TPM_ALG_NULL may be followed by additional fields (in TPMT_SYM_DEF_OBJECT) |
|
57
|
|
|
// so bail out if symmetric algorithm is not null |
|
58
|
|
|
throw new UnsupportedException('Only TPM_ALG_NULL supported for symmetric field in TPMPS_ECC_PARMS'); |
|
59
|
|
|
} |
|
60
|
1 |
|
$scheme = $buffer->getUint16Val($offset + 2); |
|
61
|
1 |
|
if ($scheme !== TpmPublic::TPM_ALG_NULL) { |
|
62
|
|
|
// Values other than TPM_ALG_NULL may be followed by additional fields (in TPMT_ECC_SCHEME) |
|
63
|
|
|
// so bail out if scheme algorithm is not null |
|
64
|
|
|
throw new UnsupportedException('Only TPM_ALG_NULL supported for scheme field in TPMPS_ECC_PARMS'); |
|
65
|
|
|
} |
|
66
|
1 |
|
$curveId = $buffer->getUint16Val($offset + 4); |
|
67
|
1 |
|
$kdf = $buffer->getUint16Val($offset + 6); |
|
68
|
1 |
|
if ($kdf !== TpmPublic::TPM_ALG_NULL) { |
|
69
|
|
|
// Values other than TPM_ALG_NULL may be followed by additional fields (in TPMT_KDF_SCHEME+) |
|
70
|
|
|
// so bail out if kdf algorithm is not null |
|
71
|
|
|
throw new UnsupportedException('Only TPM_ALG_NULL supported for kdf field in TPMPS_ECC_PARMS'); |
|
72
|
|
|
} |
|
73
|
1 |
|
$endOffset = $offset + 8; |
|
74
|
1 |
|
return new self($symmetric, $scheme, $curveId, $kdf); |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
1 |
|
public function getSymmetric(): int |
|
78
|
|
|
{ |
|
79
|
1 |
|
return $this->symmetric; |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
1 |
|
public function getScheme(): int |
|
83
|
|
|
{ |
|
84
|
1 |
|
return $this->scheme; |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
1 |
|
public function getCurveId(): int |
|
88
|
|
|
{ |
|
89
|
1 |
|
return $this->curveId; |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
1 |
|
public function getKdf(): int |
|
93
|
|
|
{ |
|
94
|
1 |
|
return $this->kdf; |
|
95
|
|
|
} |
|
96
|
|
|
} |
|
97
|
|
|
|
madwizard-org /
webauthn-server
