Java XPath Get getCertificateFromKeyInfo(Node keyInfoNode)

Description

get Certificate From Key Info

License

Apache License

Declaration

public static X509Certificate getCertificateFromKeyInfo(Node keyInfoNode)
            throws ParserConfigurationException, SAXException, IOException 

Method Source Code

//package com.java2s;
/*//ww  w .  ja  v a2 s  .  com
 * Copyright 2010 University of Chicago
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 *
 * NOTE: This is a _PROTOTYPE_ implementation and is not intended for
 *       production use.
 * @src https://svn.cagrid.org/trunk/cagrid/restsecurity/cagrid-restsecurity-common/src/main/java/org/cagrid/security/rest/util/SecurityUtil.java
 */

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;

import org.apache.commons.codec.binary.Base64;

import org.w3c.dom.Node;

import org.xml.sax.SAXException;

public class Main {
    static XPathExpression x509Path = null;
    static CertificateFactory certFactory = null;

    public static X509Certificate getCertificateFromKeyInfo(Node keyInfoNode)
            throws ParserConfigurationException, SAXException, IOException {
        X509Certificate cert = null;

        try {
            String s = x509Path.evaluate(keyInfoNode);
            if (s == null || s.length() == 0)
                return null;
            byte[] decoded = Base64.decodeBase64(s);
            cert = (X509Certificate) certFactory.generateCertificate(new ByteArrayInputStream(decoded));
        } catch (XPathExpressionException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (CertificateException e) {
            e.printStackTrace();
        }
        return cert;
    }
}

Related

1. get(String path, Node e)
2. getAttribute(String fileName, String xPathExpression, String attributeName)
3. getBaseLocation(byte[] metadata)
4. getBool(Node node, boolean def, XPathExpression expr)
5. getCache()
6. getCruxPagesXPath()
7. getDefaultXPath()
8. getDefaultXPathFactory()
9. getDigestValue(Node reference)