Mega Code Archive
Generate a listing of the most trusted certification authorities used by your JVM
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/*
* Copyright 2005 MBARI
*
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 2.1
* (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.gnu.org/copyleft/lesser.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//package org.mbari.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.PKIXParameters;
import java.security.cert.TrustAnchor;
import java.security.cert.X509Certificate;
import java.util.Iterator;
//~--- classes ----------------------------------------------------------------
/**
* <p>Generate a listing of the most trusted certification authorities used
* by your JVM</p>
*
*
* @author <a href="http://www.mbari.org">MBARI</a>
* @version $Id: CAList.java 265 2006-06-20 05:30:09Z hohonuuli $
*/
public class CAList {
/**
* <p><!-- Method description --></p>
*
*
* @param args
*/
public static void main(String[] args) {
try {
// Load the JDK's cacerts keystore file
String filename = System.getProperty("java.home") +
"/lib/security/cacerts".replace('/', File.separatorChar);
FileInputStream is = new FileInputStream(filename);
KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
String password = "changeit";
keystore.load(is, password.toCharArray());
// This class retrieves the most-trusted CAs from the keystore
PKIXParameters params = new PKIXParameters(keystore);
// Get the set of trust anchors, which contain the most-trusted CA certificates
Iterator it = params.getTrustAnchors().iterator();
for (; it.hasNext(); ) {
TrustAnchor ta = (TrustAnchor) it.next();
// Get certificate
X509Certificate cert = ta.getTrustedCert();
System.out.println(
"<issuer>" + cert.getIssuerDN() + "</issuer>\n");
}
} catch (CertificateException e) {}
catch (KeyStoreException e) {}
catch (NoSuchAlgorithmException e) {}
catch (InvalidAlgorithmParameterException e) {}
catch (IOException e) {}
}
}
]]>