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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
using System;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Cms
{
public class AuthenticatedData
: Asn1Encodable
{
private DerInteger version;
private OriginatorInfo originatorInfo;
private Asn1Set recipientInfos;
private AlgorithmIdentifier macAlgorithm;
private AlgorithmIdentifier digestAlgorithm;
private ContentInfo encapsulatedContentInfo;
private Asn1Set authAttrs;
private Asn1OctetString mac;
private Asn1Set unauthAttrs;
public AuthenticatedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
AlgorithmIdentifier macAlgorithm,
AlgorithmIdentifier digestAlgorithm,
ContentInfo encapsulatedContent,
Asn1Set authAttrs,
Asn1OctetString mac,
Asn1Set unauthAttrs)
{
if (digestAlgorithm != null || authAttrs != null)
{
if (digestAlgorithm == null || authAttrs == null)
{
throw new ArgumentException("digestAlgorithm and authAttrs must be set together");
}
}
version = new DerInteger(CalculateVersion(originatorInfo));
this.originatorInfo = originatorInfo;
this.macAlgorithm = macAlgorithm;
this.digestAlgorithm = digestAlgorithm;
this.recipientInfos = recipientInfos;
this.encapsulatedContentInfo = encapsulatedContent;
this.authAttrs = authAttrs;
this.mac = mac;
this.unauthAttrs = unauthAttrs;
}
private AuthenticatedData(Asn1Sequence seq)
{
int index = 0;
version = (DerInteger)seq[index++];
Asn1Encodable tmp = seq[index++];
if (tmp is Asn1TaggedObject taggedObject1)
{
originatorInfo = OriginatorInfo.GetInstance(taggedObject1, false);
tmp = seq[index++];
}
recipientInfos = Asn1Set.GetInstance(tmp);
macAlgorithm = AlgorithmIdentifier.GetInstance(seq[index++]);
tmp = seq[index++];
if (tmp is Asn1TaggedObject taggedObject2)
{
digestAlgorithm = AlgorithmIdentifier.GetInstance(taggedObject2, false);
tmp = seq[index++];
}
encapsulatedContentInfo = ContentInfo.GetInstance(tmp);
tmp = seq[index++];
if (tmp is Asn1TaggedObject taggedObject3)
{
authAttrs = Asn1Set.GetInstance(taggedObject3, false);
tmp = seq[index++];
}
mac = Asn1OctetString.GetInstance(tmp);
if (seq.Count > index)
{
unauthAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[index], false);
}
}
/**
* return an AuthenticatedData object from a tagged object.
*
* @param obj the tagged object holding the object we want.
* @param isExplicit true if the object is meant to be explicitly
* tagged false otherwise.
* @throws ArgumentException if the object held by the
* tagged object cannot be converted.
*/
public static AuthenticatedData GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
}
/**
* return an AuthenticatedData object from the given object.
*
* @param obj the object we want converted.
* @throws ArgumentException if the object cannot be converted.
*/
public static AuthenticatedData GetInstance(
object obj)
{
if (obj == null || obj is AuthenticatedData)
{
return (AuthenticatedData)obj;
}
if (obj is Asn1Sequence)
{
return new AuthenticatedData((Asn1Sequence)obj);
}
throw new ArgumentException("Invalid AuthenticatedData: " + Platform.GetTypeName(obj));
}
public DerInteger Version
{
get { return version; }
}
public OriginatorInfo OriginatorInfo
{
get { return originatorInfo; }
}
public Asn1Set RecipientInfos
{
get { return recipientInfos; }
}
public AlgorithmIdentifier MacAlgorithm
{
get { return macAlgorithm; }
}
public AlgorithmIdentifier DigestAlgorithm
{
get { return digestAlgorithm; }
}
public ContentInfo EncapsulatedContentInfo
{
get { return encapsulatedContentInfo; }
}
public Asn1Set AuthAttrs
{
get { return authAttrs; }
}
public Asn1OctetString Mac
{
get { return mac; }
}
public Asn1Set UnauthAttrs
{
get { return unauthAttrs; }
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* AuthenticatedData ::= SEQUENCE {
* version CMSVersion,
* originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL,
* recipientInfos RecipientInfos,
* macAlgorithm MessageAuthenticationCodeAlgorithm,
* digestAlgorithm [1] DigestAlgorithmIdentifier OPTIONAL,
* encapContentInfo EncapsulatedContentInfo,
* authAttrs [2] IMPLICIT AuthAttributes OPTIONAL,
* mac MessageAuthenticationCode,
* unauthAttrs [3] IMPLICIT UnauthAttributes OPTIONAL }
*
* AuthAttributes ::= SET SIZE (1..MAX) OF Attribute
*
* UnauthAttributes ::= SET SIZE (1..MAX) OF Attribute
*
* MessageAuthenticationCode ::= OCTET STRING
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(version);
v.AddOptionalTagged(false, 0, originatorInfo);
v.Add(recipientInfos, macAlgorithm);
v.AddOptionalTagged(false, 1, digestAlgorithm);
v.Add(encapsulatedContentInfo);
v.AddOptionalTagged(false, 2, authAttrs);
v.Add(mac);
v.AddOptionalTagged(false, 3, unauthAttrs);
return new BerSequence(v);
}
public static int CalculateVersion(OriginatorInfo origInfo)
{
if (origInfo == null)
return 0;
int ver = 0;
foreach (object obj in origInfo.Certificates)
{
if (obj is Asn1TaggedObject)
{
Asn1TaggedObject tag = (Asn1TaggedObject)obj;
if (tag.TagNo == 2)
{
ver = 1;
}
else if (tag.TagNo == 3)
{
ver = 3;
break;
}
}
}
foreach (object obj in origInfo.Crls)
{
if (obj is Asn1TaggedObject)
{
Asn1TaggedObject tag = (Asn1TaggedObject)obj;
if (tag.TagNo == 1)
{
ver = 3;
break;
}
}
}
return ver;
}
}
}
|
