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
|
namespace Org.BouncyCastle.Asn1.Cms
{
public class EnvelopedData
: Asn1Encodable
{
public static EnvelopedData GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is EnvelopedData envelopedData)
return envelopedData;
return new EnvelopedData(Asn1Sequence.GetInstance(obj));
}
public static EnvelopedData GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return new EnvelopedData(Asn1Sequence.GetInstance(obj, explicitly));
}
private DerInteger version;
private OriginatorInfo originatorInfo;
private Asn1Set recipientInfos;
private EncryptedContentInfo encryptedContentInfo;
private Asn1Set unprotectedAttrs;
public EnvelopedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
EncryptedContentInfo encryptedContentInfo,
Asn1Set unprotectedAttrs)
{
this.version = new DerInteger(CalculateVersion(originatorInfo, recipientInfos, unprotectedAttrs));
this.originatorInfo = originatorInfo;
this.recipientInfos = recipientInfos;
this.encryptedContentInfo = encryptedContentInfo;
this.unprotectedAttrs = unprotectedAttrs;
}
public EnvelopedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
EncryptedContentInfo encryptedContentInfo,
Attributes unprotectedAttrs)
{
this.version = new DerInteger(CalculateVersion(originatorInfo, recipientInfos, Asn1Set.GetInstance(unprotectedAttrs)));
this.originatorInfo = originatorInfo;
this.recipientInfos = recipientInfos;
this.encryptedContentInfo = encryptedContentInfo;
this.unprotectedAttrs = Asn1Set.GetInstance(unprotectedAttrs);
}
private EnvelopedData(Asn1Sequence seq)
{
int index = 0;
version = (DerInteger) seq[index++];
object tmp = seq[index++];
if (tmp is Asn1TaggedObject taggedObject)
{
originatorInfo = OriginatorInfo.GetInstance(taggedObject, false);
tmp = seq[index++];
}
recipientInfos = Asn1Set.GetInstance(tmp);
encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[index++]);
if (seq.Count > index)
{
unprotectedAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[index], false);
}
}
public DerInteger Version
{
get { return version; }
}
public OriginatorInfo OriginatorInfo
{
get { return originatorInfo; }
}
public Asn1Set RecipientInfos
{
get { return recipientInfos; }
}
public EncryptedContentInfo EncryptedContentInfo
{
get { return encryptedContentInfo; }
}
public Asn1Set UnprotectedAttrs
{
get { return unprotectedAttrs; }
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* EnvelopedData ::= Sequence {
* version CMSVersion,
* originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL,
* recipientInfos RecipientInfos,
* encryptedContentInfo EncryptedContentInfo,
* unprotectedAttrs [1] IMPLICIT UnprotectedAttributes OPTIONAL
* }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(version);
v.AddOptionalTagged(false, 0, originatorInfo);
v.Add(recipientInfos, encryptedContentInfo);
v.AddOptionalTagged(false, 1, unprotectedAttrs);
return new BerSequence(v);
}
public static int CalculateVersion(OriginatorInfo originatorInfo, Asn1Set recipientInfos, Asn1Set unprotectedAttrs)
{
if (originatorInfo != null || unprotectedAttrs != null)
{
return 2;
}
foreach (object o in recipientInfos)
{
RecipientInfo ri = RecipientInfo.GetInstance(o);
if (!ri.Version.HasValue(0))
{
return 2;
}
}
return 0;
}
}
}
|
