eu.europa.esig.dss.cookbook.sources.JavaKeyStoreTool.java Source code

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Here is the source code for eu.europa.esig.dss.cookbook.sources.JavaKeyStoreTool.java

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/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.cookbook.sources;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.security.Key;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import org.apache.commons.io.IOUtils;

import eu.europa.esig.dss.DSSException;
import eu.europa.esig.dss.token.KSPrivateKeyEntry;

public class JavaKeyStoreTool {

    protected KeyStore ks = null;

    public JavaKeyStoreTool(final String ksUrlLocation, final String ksPassword) {

        InputStream ksStream = null;
        try {
            final URL ksLocation = new URL(ksUrlLocation);
            ks = KeyStore.getInstance(KeyStore.getDefaultType());
            ksStream = ksLocation.openStream();
            ks.load(ksStream, (ksPassword == null) ? null : ksPassword.toCharArray());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (CertificateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(ksStream);
        }
    }

    public X509Certificate getCertificate(String certAlias, String password) {

        try {

            Certificate cert = ks.getCertificate(certAlias);
            if (cert == null) {
                return null;
            }
            if (!(cert instanceof X509Certificate)) {
                return null;
            }
            return (X509Certificate) cert;
        } catch (KeyStoreException e) {

            throw new DSSException(e);
        }
    }

    public KSPrivateKeyEntry getPrivateKey(String certAlias, String password) {

        try {

            final Key key = ks.getKey(certAlias, password.toCharArray());
            if (key == null) {
                return null;
            }
            if (!(key instanceof PrivateKey)) {
                return null;
            }
            final Certificate[] certificateChain = ks.getCertificateChain(certAlias);
            KeyStore.PrivateKeyEntry privateKey = new KeyStore.PrivateKeyEntry((PrivateKey) key, certificateChain);
            KSPrivateKeyEntry ksPrivateKey = new KSPrivateKeyEntry(privateKey);
            return ksPrivateKey;
        } catch (KeyStoreException e) {
            throw new DSSException(e);
        } catch (UnrecoverableKeyException e) {
            throw new DSSException(e);
        } catch (NoSuchAlgorithmException e) {
            throw new DSSException(e);
        }
    }
}