blob: b8492d14bb92bd908ffea5d38fa7c933062795d2 (
plain) (
blame)
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
|
using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Cms
{
public class EncryptedData
: Asn1Encodable
{
private readonly DerInteger version;
private readonly EncryptedContentInfo encryptedContentInfo;
private readonly Asn1Set unprotectedAttrs;
public static EncryptedData GetInstance(
object obj)
{
if (obj is EncryptedData)
return (EncryptedData) obj;
if (obj is Asn1Sequence)
return new EncryptedData((Asn1Sequence) obj);
throw new ArgumentException("Invalid EncryptedData: " + Platform.GetTypeName(obj));
}
public EncryptedData(
EncryptedContentInfo encInfo)
: this(encInfo, null)
{
}
public EncryptedData(
EncryptedContentInfo encInfo,
Asn1Set unprotectedAttrs)
{
if (encInfo == null)
throw new ArgumentNullException("encInfo");
this.version = new DerInteger((unprotectedAttrs == null) ? 0 : 2);
this.encryptedContentInfo = encInfo;
this.unprotectedAttrs = unprotectedAttrs;
}
private EncryptedData(
Asn1Sequence seq)
{
if (seq == null)
throw new ArgumentNullException("seq");
if (seq.Count < 2 || seq.Count > 3)
throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
this.version = DerInteger.GetInstance(seq[0]);
this.encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[1]);
if (seq.Count > 2)
{
this.unprotectedAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[2], false);
}
}
public virtual DerInteger Version
{
get { return version; }
}
public virtual EncryptedContentInfo EncryptedContentInfo
{
get { return encryptedContentInfo; }
}
public virtual Asn1Set UnprotectedAttrs
{
get { return unprotectedAttrs; }
}
/**
* <pre>
* EncryptedData ::= SEQUENCE {
* version CMSVersion,
* encryptedContentInfo EncryptedContentInfo,
* unprotectedAttrs [1] IMPLICIT UnprotectedAttributes OPTIONAL }
* </pre>
* @return a basic ASN.1 object representation.
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(version, encryptedContentInfo);
if (unprotectedAttrs != null)
{
v.Add(new BerTaggedObject(false, 1, unprotectedAttrs));
}
return new BerSequence(v);
}
}
}
|
