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
|
package org.bouncycastle.cert;
import java.math.BigInteger;
import java.util.Date;
import java.util.Locale;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x509.Certificate;
import org.bouncycastle.asn1.x509.Extension;
import org.bouncycastle.asn1.x509.ExtensionsGenerator;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x509.Time;
import org.bouncycastle.asn1.x509.V3TBSCertificateGenerator;
import org.bouncycastle.operator.ContentSigner;
/**
* class to produce an X.509 Version 3 certificate.
*/
public class X509v3CertificateBuilder
{
private V3TBSCertificateGenerator tbsGen;
private ExtensionsGenerator extGenerator;
/**
* Create a builder for a version 3 certificate.
*
* @param issuer the certificate issuer
* @param serial the certificate serial number
* @param notBefore the date before which the certificate is not valid
* @param notAfter the date after which the certificate is not valid
* @param subject the certificate subject
* @param publicKeyInfo the info structure for the public key to be associated with this certificate.
*/
public X509v3CertificateBuilder(X500Name issuer, BigInteger serial, Date notBefore, Date notAfter, X500Name subject, SubjectPublicKeyInfo publicKeyInfo)
{
this(issuer, serial, new Time(notBefore), new Time(notAfter), subject, publicKeyInfo);
}
/**
* Create a builder for a version 3 certificate. You may need to use this constructor if the default locale
* doesn't use a Gregorian calender so that the Time produced is compatible with other ASN.1 implementations.
*
* @param issuer the certificate issuer
* @param serial the certificate serial number
* @param notBefore the date before which the certificate is not valid
* @param notAfter the date after which the certificate is not valid
* @param dateLocale locale to be used for date interpretation.
* @param subject the certificate subject
* @param publicKeyInfo the info structure for the public key to be associated with this certificate.
*/
public X509v3CertificateBuilder(X500Name issuer, BigInteger serial, Date notBefore, Date notAfter, Locale dateLocale, X500Name subject, SubjectPublicKeyInfo publicKeyInfo)
{
this(issuer, serial, new Time(notBefore, dateLocale), new Time(notAfter, dateLocale), subject, publicKeyInfo);
}
/**
* Create a builder for a version 3 certificate.
*
* @param issuer the certificate issuer
* @param serial the certificate serial number
* @param notBefore the Time before which the certificate is not valid
* @param notAfter the Time after which the certificate is not valid
* @param subject the certificate subject
* @param publicKeyInfo the info structure for the public key to be associated with this certificate.
*/
public X509v3CertificateBuilder(X500Name issuer, BigInteger serial, Time notBefore, Time notAfter, X500Name subject, SubjectPublicKeyInfo publicKeyInfo)
{
tbsGen = new V3TBSCertificateGenerator();
tbsGen.setSerialNumber(new ASN1Integer(serial));
tbsGen.setIssuer(issuer);
tbsGen.setStartDate(notBefore);
tbsGen.setEndDate(notAfter);
tbsGen.setSubject(subject);
tbsGen.setSubjectPublicKeyInfo(publicKeyInfo);
extGenerator = new ExtensionsGenerator();
}
/**
* Set the subjectUniqueID - note: it is very rare that it is correct to do this.
*
* @param uniqueID a boolean array representing the bits making up the subjectUniqueID.
* @return this builder object.
*/
public X509v3CertificateBuilder setSubjectUniqueID(boolean[] uniqueID)
{
tbsGen.setSubjectUniqueID(CertUtils.booleanToBitString(uniqueID));
return this;
}
/**
* Set the issuerUniqueID - note: it is very rare that it is correct to do this.
*
* @param uniqueID a boolean array representing the bits making up the issuerUniqueID.
* @return this builder object.
*/
public X509v3CertificateBuilder setIssuerUniqueID(boolean[] uniqueID)
{
tbsGen.setIssuerUniqueID(CertUtils.booleanToBitString(uniqueID));
return this;
}
/**
* Add a given extension field for the standard extensions tag (tag 3)
*
* @param oid the OID defining the extension type.
* @param isCritical true if the extension is critical, false otherwise.
* @param value the ASN.1 structure that forms the extension's value.
* @return this builder object.
*/
public X509v3CertificateBuilder addExtension(
ASN1ObjectIdentifier oid,
boolean isCritical,
ASN1Encodable value)
throws CertIOException
{
CertUtils.addExtension(extGenerator, oid, isCritical, value);
return this;
}
/**
* Add a given extension field for the standard extensions tag (tag 3) using a byte encoding of the
* extension value.
*
* @param oid the OID defining the extension type.
* @param isCritical true if the extension is critical, false otherwise.
* @param encodedValue a byte array representing the encoding of the extension value.
* @return this builder object.
*/
public X509v3CertificateBuilder addExtension(
ASN1ObjectIdentifier oid,
boolean isCritical,
byte[] encodedValue)
throws CertIOException
{
extGenerator.addExtension(oid, isCritical, encodedValue);
return this;
}
/**
* Add a given extension field for the standard extensions tag (tag 3)
* copying the extension value from another certificate.
*
* @param oid the OID defining the extension type.
* @param isCritical true if the copied extension is to be marked as critical, false otherwise.
* @param certHolder the holder for the certificate that the extension is to be copied from.
* @return this builder object.
*/
public X509v3CertificateBuilder copyAndAddExtension(
ASN1ObjectIdentifier oid,
boolean isCritical,
X509CertificateHolder certHolder)
{
Certificate cert = certHolder.toASN1Structure();
Extension extension = cert.getTBSCertificate().getExtensions().getExtension(oid);
if (extension == null)
{
throw new NullPointerException("extension " + oid + " not present");
}
extGenerator.addExtension(oid, isCritical, extension.getExtnValue().getOctets());
return this;
}
/**
* Generate an X.509 certificate, based on the current issuer and subject
* using the passed in signer.
*
* @param signer the content signer to be used to generate the signature validating the certificate.
* @return a holder containing the resulting signed certificate.
*/
public X509CertificateHolder build(
ContentSigner signer)
{
tbsGen.setSignature(signer.getAlgorithmIdentifier());
if (!extGenerator.isEmpty())
{
tbsGen.setExtensions(extGenerator.generate());
}
return CertUtils.generateFullCert(signer, tbsGen.generateTBSCertificate());
}
}
|
