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
|
package org.bouncycastle.x509;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.SignatureException;
import java.util.Date;
import java.util.Hashtable;
import java.util.Vector;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.ASN1GeneralizedTime;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DEROutputStream;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.AttCertIssuer;
import org.bouncycastle.asn1.x509.Attribute;
import org.bouncycastle.asn1.x509.AttributeCertificate;
import org.bouncycastle.asn1.x509.V2AttributeCertificateInfoGenerator;
import org.bouncycastle.asn1.x509.AttributeCertificateInfo;
import org.bouncycastle.asn1.x509.X509Extension;
import org.bouncycastle.asn1.x509.X509Extensions;
import org.bouncycastle.util.Strings;
/**
* class to produce an X.509 Version 2 AttributeCertificate.
*/
public class X509V2AttributeCertificateGenerator
{
private V2AttributeCertificateInfoGenerator acInfoGen;
private ASN1ObjectIdentifier sigOID;
private AlgorithmIdentifier sigAlgId;
private String signatureAlgorithm;
private Hashtable extensions = null;
private Vector extOrdering = null;
private static Hashtable algorithms = new Hashtable();
static
{
algorithms.put("MD2WITHRSAENCRYPTION", new ASN1ObjectIdentifier("1.2.840.113549.1.1.2"));
algorithms.put("MD2WITHRSA", new ASN1ObjectIdentifier("1.2.840.113549.1.1.2"));
algorithms.put("MD5WITHRSAENCRYPTION", new ASN1ObjectIdentifier("1.2.840.113549.1.1.4"));
algorithms.put("MD5WITHRSA", new ASN1ObjectIdentifier("1.2.840.113549.1.1.4"));
algorithms.put("SHA1WITHRSAENCRYPTION", new ASN1ObjectIdentifier("1.2.840.113549.1.1.5"));
algorithms.put("SHA1WITHRSA", new ASN1ObjectIdentifier("1.2.840.113549.1.1.5"));
algorithms.put("RIPEMD160WITHRSAENCRYPTION", new ASN1ObjectIdentifier("1.3.36.3.3.1.2"));
algorithms.put("RIPEMD160WITHRSA", new ASN1ObjectIdentifier("1.3.36.3.3.1.2"));
algorithms.put("SHA1WITHDSA", new ASN1ObjectIdentifier("1.2.840.10040.4.3"));
algorithms.put("DSAWITHSHA1", new ASN1ObjectIdentifier("1.2.840.10040.4.3"));
algorithms.put("SHA1WITHECDSA", new ASN1ObjectIdentifier("1.2.840.10045.4.1"));
algorithms.put("ECDSAWITHSHA1", new ASN1ObjectIdentifier("1.2.840.10045.4.1"));
}
public X509V2AttributeCertificateGenerator()
{
acInfoGen = new V2AttributeCertificateInfoGenerator();
}
/**
* reset the generator
*/
public void reset()
{
acInfoGen = new V2AttributeCertificateInfoGenerator();
extensions = null;
extOrdering = null;
}
/**
* Set the Holder of this Attribute Certificate
*/
public void setHolder(
AttributeCertificateHolder holder)
{
acInfoGen.setHolder(holder.holder);
}
/**
* Set the issuer
*/
public void setIssuer(
AttributeCertificateIssuer issuer)
{
acInfoGen.setIssuer(AttCertIssuer.getInstance(issuer.form));
}
/**
* Set the Signature inside the AttributeCertificateInfo
*/
public void setSignature(
AlgorithmIdentifier sig)
{
acInfoGen.setSignature(sig);
}
/**
* set the serial number for the certificate.
*/
public void setSerialNumber(
BigInteger serialNumber)
{
acInfoGen.setSerialNumber(new ASN1Integer(serialNumber));
}
public void setNotBefore(
Date date)
{
acInfoGen.setStartDate(new ASN1GeneralizedTime(date));
}
public void setNotAfter(
Date date)
{
acInfoGen.setEndDate(new ASN1GeneralizedTime(date));
}
public void setSignatureAlgorithm(
String signatureAlgorithm)
{
this.signatureAlgorithm = signatureAlgorithm;
sigOID = (ASN1ObjectIdentifier)algorithms.get(Strings.toUpperCase(signatureAlgorithm));
if (sigOID == null)
{
throw new IllegalArgumentException("Unknown signature type requested");
}
sigAlgId = new AlgorithmIdentifier(this.sigOID, new DERNull());
acInfoGen.setSignature(sigAlgId);
}
/**
* add an attribute
*/
public void addAttribute(
X509Attribute attribute)
{
acInfoGen.addAttribute(Attribute.getInstance(attribute.toASN1Object()));
}
public void setIssuerUniqueId(
boolean[] iui)
{
// [TODO] convert boolean array to bit string
//acInfoGen.setIssuerUniqueID(iui);
}
/**
* add a given extension field for the standard extensions tag (tag 3)
* @throws IOException
*/
public void addExtension(
String OID,
boolean critical,
ASN1Encodable value)
throws IOException
{
this.addExtension(OID, critical, value.toASN1Primitive().getEncoded());
}
/**
* add a given extension field for the standard extensions tag (tag 3)
* The value parameter becomes the contents of the octet string associated
* with the extension.
*/
public void addExtension(
String OID,
boolean critical,
byte[] value)
{
if (extensions == null)
{
extensions = new Hashtable();
extOrdering = new Vector();
}
ASN1ObjectIdentifier oid = new ASN1ObjectIdentifier(OID);
extensions.put(oid, new X509Extension(critical, new DEROctetString(value)));
extOrdering.addElement(oid);
}
/**
* generate an X509 certificate, based on the current issuer and subject,
* using the passed in provider for the signing.
*/
public X509AttributeCertificate generateCertificate(
PrivateKey key,
String provider)
throws NoSuchProviderException, SecurityException, SignatureException, InvalidKeyException
{
return generateCertificate(key, provider, null);
}
/**
* generate an X509 certificate, based on the current issuer and subject,
* using the passed in provider for the signing and the supplied source
* of randomness, if required.
*/
public X509AttributeCertificate generateCertificate(
PrivateKey key,
String provider,
SecureRandom random)
throws NoSuchProviderException, SecurityException, SignatureException, InvalidKeyException
{
Signature sig = null;
if (sigOID == null)
{
throw new IllegalStateException("no signature algorithm specified");
}
try
{
sig = Signature.getInstance(sigOID.getId(), provider);
}
catch (NoSuchAlgorithmException ex)
{
try
{
sig = Signature.getInstance(signatureAlgorithm, provider);
}
catch (NoSuchAlgorithmException e)
{
throw new SecurityException("exception creating signature: " + e.toString());
}
}
sig.initSign(key);
if (extensions != null)
{
acInfoGen.setExtensions(new X509Extensions(extOrdering, extensions));
}
AttributeCertificateInfo acInfo = acInfoGen.generateAttributeCertificateInfo();
try
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DEROutputStream dOut = new DEROutputStream(bOut);
dOut.writeObject(acInfo);
sig.update(bOut.toByteArray());
}
catch (Exception e)
{
throw new SecurityException("exception encoding Attribute cert - " + e);
}
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(acInfo);
v.add(sigAlgId);
v.add(new DERBitString(sig.sign()));
try
{
return new X509V2AttributeCertificate(new AttributeCertificate(new DERSequence(v)));
}
catch (IOException e)
{
throw new RuntimeException("constructed invalid certificate!");
}
}
}
|