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Java > Open Source Codes > net > sf > jguard > ext > authentication > certificates > CertificateConverter


1 /*
2 jGuard is a security framework based on top of jaas (java authentication and authorization security).
3 it is written for web applications, to resolve simply, access control problems.
4 version $Name$
5 http://sourceforge.net/projects/jguard/
6
7 Copyright (C) 2004 Charles GAY
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22
23
24 jGuard project home page:
25 http://sourceforge.net/projects/jguard/
26
27 */
28 package net.sf.jguard.ext.authentication.certificates;
29
30 import java.io.ByteArrayInputStream JavaDoc;
31
32 /**
33  *
34  * Class inspired from <a HREF="http://javaalmanac.com/egs/javax.security.cert/ConvertCert.html">a javaalmanach example</a>.
35  * @author <a HREF="mailto:diabolo512@users.sourceforge.net ">Charles Gay</a>
36  *
37  */
38 public class CertificateConverter {
39     private static final String JavaDoc X_509 = "X.509";
40
41     /**
42      * convert a jav<b>ax</b>.security.cert.X509Certificate to a jav<b>a</b>.security.cert.X509Certificate.
43      * @param cert
44      * @return X509Certificate
45      */
46     public static java.security.cert.X509Certificate JavaDoc convertOldToNew(javax.security.cert.X509Certificate cert) {
47         try {
48             byte[] encoded = cert.getEncoded();
49             ByteArrayInputStream JavaDoc bis = new ByteArrayInputStream JavaDoc(encoded);
50             java.security.cert.CertificateFactory JavaDoc cf
51                 = java.security.cert.CertificateFactory.getInstance(CertificateConverter.X_509);
52             return (java.security.cert.X509Certificate JavaDoc)cf.generateCertificate(bis);
53         } catch (java.security.cert.CertificateEncodingException JavaDoc e) {
54         } catch (javax.security.cert.CertificateEncodingException e) {
55         } catch (java.security.cert.CertificateException JavaDoc e) {
56         }
57         return null;
58     }
59
60     /**
61      * convert a <code>java.security.cert.X509Certificate</code> to a <code>javax.security.cert.X509Certificate</code>.
62      * @param cert
63      * @return X509Certificate
64      */
65     public static javax.security.cert.X509Certificate convertNewToOld(java.security.cert.X509Certificate JavaDoc cert) {
66         try {
67             byte[] encoded = cert.getEncoded();
68             return javax.security.cert.X509Certificate.getInstance(encoded);
69         } catch (java.security.cert.CertificateEncodingException JavaDoc e) {
70         } catch (javax.security.cert.CertificateEncodingException e) {
71         } catch (javax.security.cert.CertificateException e) {
72         }
73         return null;
74     }
75
76
77 }
78
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