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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
using System;
namespace Org.BouncyCastle.Asn1.Pkcs
{
/**
* a Pkcs#7 signed data object.
*/
public class SignedData
: Asn1Encodable
{
private readonly DerInteger version;
private readonly Asn1Set digestAlgorithms;
private readonly ContentInfo contentInfo;
private readonly Asn1Set certificates;
private readonly Asn1Set crls;
private readonly Asn1Set signerInfos;
public static SignedData GetInstance(object obj)
{
if (obj == null)
return null;
SignedData existing = obj as SignedData;
if (existing != null)
return existing;
return new SignedData(Asn1Sequence.GetInstance(obj));
}
public SignedData(
DerInteger _version,
Asn1Set _digestAlgorithms,
ContentInfo _contentInfo,
Asn1Set _certificates,
Asn1Set _crls,
Asn1Set _signerInfos)
{
version = _version;
digestAlgorithms = _digestAlgorithms;
contentInfo = _contentInfo;
certificates = _certificates;
crls = _crls;
signerInfos = _signerInfos;
}
private SignedData(
Asn1Sequence seq)
{
var e = seq.GetEnumerator();
e.MoveNext();
version = (DerInteger) e.Current;
e.MoveNext();
digestAlgorithms = (Asn1Set) e.Current;
e.MoveNext();
contentInfo = ContentInfo.GetInstance(e.Current);
while (e.MoveNext())
{
Asn1Object o = e.Current.ToAsn1Object();
//
// an interesting feature of SignedData is that there appear to be varying implementations...
// for the moment we ignore anything which doesn't fit.
//
if (o is Asn1TaggedObject tagged)
{
switch (tagged.TagNo)
{
case 0:
certificates = Asn1Set.GetInstance(tagged, false);
break;
case 1:
crls = Asn1Set.GetInstance(tagged, false);
break;
default:
throw new ArgumentException("unknown tag value " + tagged.TagNo);
}
}
else
{
signerInfos = (Asn1Set) o;
}
}
}
public DerInteger Version
{
get { return version; }
}
public Asn1Set DigestAlgorithms
{
get { return digestAlgorithms; }
}
public ContentInfo ContentInfo
{
get { return contentInfo; }
}
public Asn1Set Certificates
{
get { return certificates; }
}
public Asn1Set Crls
{
get { return crls; }
}
public Asn1Set SignerInfos
{
get { return signerInfos; }
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* SignedData ::= Sequence {
* version Version,
* digestAlgorithms DigestAlgorithmIdentifiers,
* contentInfo ContentInfo,
* certificates
* [0] IMPLICIT ExtendedCertificatesAndCertificates
* OPTIONAL,
* crls
* [1] IMPLICIT CertificateRevocationLists OPTIONAL,
* signerInfos SignerInfos }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(version, digestAlgorithms, contentInfo);
v.AddOptionalTagged(false, 0, certificates);
v.AddOptionalTagged(false, 1, crls);
v.Add(signerInfos);
return new BerSequence(v);
}
}
}
|
