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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
|
using System;
using System.IO;
using System.Text;
using Org.BouncyCastle.Utilities.Encoders;
namespace Org.BouncyCastle.Asn1.Utilities
{
public static class Asn1Dump
{
private const string Tab = " ";
private const int SampleSize = 32;
/**
* dump a Der object as a formatted string with indentation
*
* @param obj the Asn1Object to be dumped out.
*/
private static void AsString(string indent, bool verbose, Asn1Object obj, StringBuilder buf)
{
if (obj is Asn1Null)
{
buf.Append(indent);
buf.AppendLine("NULL");
}
else if (obj is Asn1Sequence asn1Sequence)
{
buf.Append(indent);
if (asn1Sequence is BerSequence)
{
buf.AppendLine("BER Sequence");
}
else if (!(asn1Sequence is DLSequence))
{
buf.AppendLine("DER Sequence");
}
else
{
buf.AppendLine("Sequence");
}
string elementsIndent = indent + Tab;
for (int i = 0, count = asn1Sequence.Count; i < count; ++i)
{
AsString(elementsIndent, verbose, asn1Sequence[i].ToAsn1Object(), buf);
}
}
else if (obj is Asn1Set asn1Set)
{
buf.Append(indent);
if (asn1Set is BerSet)
{
buf.AppendLine("BER Set");
}
else if (!(asn1Set is DLSet))
{
buf.AppendLine("DER Set");
}
else
{
buf.AppendLine("Set");
}
string elementsIndent = indent + Tab;
for (int i = 0, count = asn1Set.Count; i < count; ++i)
{
AsString(elementsIndent, verbose, asn1Set[i].ToAsn1Object(), buf);
}
}
else if (obj is Asn1TaggedObject taggedObject)
{
buf.Append(indent);
if (taggedObject is BerTaggedObject)
{
buf.Append("BER Tagged ");
}
else if (!(taggedObject is DLTaggedObject))
{
buf.Append("DER Tagged ");
}
else
{
buf.Append("Tagged ");
}
buf.Append(Asn1Utilities.GetTagText(taggedObject));
if (!taggedObject.IsExplicit())
{
buf.Append(" IMPLICIT ");
}
buf.AppendLine();
string baseIndent = indent + Tab;
AsString(baseIndent, verbose, taggedObject.GetBaseObject().ToAsn1Object(), buf);
}
else if (obj is DerObjectIdentifier oid)
{
buf.Append(indent);
buf.AppendLine("ObjectIdentifier(" + oid.Id + ")");
}
else if (obj is Asn1RelativeOid relativeOid)
{
buf.Append(indent);
buf.AppendLine("RelativeOID(" + relativeOid.Id + ")");
}
else if (obj is DerBoolean derBoolean)
{
buf.Append(indent);
buf.AppendLine("Boolean(" + derBoolean.IsTrue + ")");
}
else if (obj is DerInteger derInteger)
{
buf.Append(indent);
buf.AppendLine("Integer(" + derInteger.Value + ")");
}
else if (obj is Asn1OctetString oct)
{
byte[] octets = oct.GetOctets();
buf.Append(indent);
if (obj is BerOctetString)
{
buf.AppendLine("BER Octet String[" + octets.Length + "]");
}
else
{
buf.AppendLine("DER Octet String[" + octets.Length + "]");
}
if (verbose)
{
DumpBinaryDataAsString(buf, indent, octets);
}
}
else if (obj is DerBitString bitString)
{
byte[] bytes = bitString.GetBytes();
int padBits = bitString.PadBits;
buf.Append(indent);
if (bitString is BerBitString)
{
buf.AppendLine("BER Bit String[" + bytes.Length + ", " + padBits + "]");
}
else if (bitString is DLBitString)
{
buf.AppendLine("DL Bit String[" + bytes.Length + ", " + padBits + "]");
}
else
{
buf.AppendLine("DER Bit String[" + bytes.Length + ", " + padBits + "]");
}
if (verbose)
{
DumpBinaryDataAsString(buf, indent, bytes);
}
}
else if (obj is DerIA5String ia5String)
{
buf.Append(indent);
buf.AppendLine("IA5String(" + ia5String.GetString() + ")");
}
else if (obj is DerUtf8String utf8String)
{
buf.Append(indent);
buf.AppendLine("UTF8String(" + utf8String.GetString() + ")");
}
else if (obj is DerPrintableString printableString)
{
buf.Append(indent);
buf.AppendLine("PrintableString(" + printableString.GetString() + ")");
}
else if (obj is DerVisibleString visibleString)
{
buf.Append(indent);
buf.AppendLine("VisibleString(" + visibleString.GetString() + ")");
}
else if (obj is DerBmpString bmpString)
{
buf.Append(indent);
buf.AppendLine("BMPString(" + bmpString.GetString() + ")");
}
else if (obj is DerT61String t61String)
{
buf.Append(indent);
buf.AppendLine("T61String(" + t61String.GetString() + ")");
}
else if (obj is DerGraphicString graphicString)
{
buf.Append(indent);
buf.AppendLine("GraphicString(" + graphicString.GetString() + ")");
}
else if (obj is DerVideotexString videotexString)
{
buf.Append(indent);
buf.AppendLine("VideotexString(" + videotexString.GetString() + ")");
}
else if (obj is Asn1UtcTime utcTime)
{
buf.Append(indent);
buf.AppendLine("UTCTime(" + utcTime.TimeString + ")");
}
else if (obj is Asn1GeneralizedTime generalizedTime)
{
buf.Append(indent);
buf.AppendLine("GeneralizedTime(" + generalizedTime.GetTime() + ")");
}
else if (obj is DerEnumerated en)
{
buf.Append(indent);
buf.AppendLine("DER Enumerated(" + en.Value + ")");
}
else if (obj is DerExternal ext)
{
buf.Append(indent);
buf.AppendLine("External ");
string tab = indent + Tab;
if (ext.DirectReference != null)
{
buf.Append(tab);
buf.AppendLine("Direct Reference: " + ext.DirectReference.Id);
}
if (ext.IndirectReference != null)
{
buf.Append(tab);
buf.AppendLine("Indirect Reference: " + ext.IndirectReference.ToString());
}
if (ext.DataValueDescriptor != null)
{
AsString(tab, verbose, ext.DataValueDescriptor, buf);
}
buf.Append(tab);
buf.AppendLine("Encoding: " + ext.Encoding);
AsString(tab, verbose, ext.ExternalContent, buf);
}
else
{
buf.Append(indent);
buf.Append(obj);
buf.AppendLine();
}
}
/// <summary>Parse ASN.1 objects from input <see cref="Stream"/>, and write them to the output.</summary>
public static void Dump(Stream input, TextWriter output)
{
Asn1InputStream asn1InputStream = new Asn1InputStream(input);
Asn1Object asn1Object;
while ((asn1Object = asn1InputStream.ReadObject()) != null)
{
output.Write(DumpAsString(asn1Object));
}
}
/**
* dump out a DER object as a formatted string, in non-verbose mode
*
* @param obj the Asn1Encodable to be dumped out.
* @return the resulting string.
*/
public static string DumpAsString(Asn1Encodable obj)
{
return DumpAsString(obj, false);
}
/**
* Dump out the object as a string
*
* @param obj the Asn1Encodable to be dumped out.
* @param verbose if true, dump out the contents of octet and bit strings.
* @return the resulting string.
*/
public static string DumpAsString(Asn1Encodable obj, bool verbose)
{
StringBuilder buf = new StringBuilder();
AsString("", verbose, obj.ToAsn1Object(), buf);
return buf.ToString();
}
private static void DumpBinaryDataAsString(StringBuilder buf, string indent, byte[] bytes)
{
if (bytes.Length < 1)
return;
indent += Tab;
for (int i = 0; i < bytes.Length; i += SampleSize)
{
int remaining = bytes.Length - i;
int chunk = System.Math.Min(remaining, SampleSize);
buf.Append(indent);
buf.Append(Hex.ToHexString(bytes, i, chunk));
for (int j = chunk; j < SampleSize; ++j)
{
buf.Append(" ");
}
buf.Append(Tab);
AppendAscString(buf, bytes, i, chunk);
buf.AppendLine();
}
}
private static void AppendAscString(StringBuilder buf, byte[] bytes, int off, int len)
{
for (int i = off; i != off + len; i++)
{
char c = (char)bytes[i];
if (c >= ' ' && c <= '~')
{
buf.Append(c);
}
}
}
}
}
|
