/*

 * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.security.x509;

import java.io.IOException;

import java.io.OutputStream;

import java.math.BigInteger;

import java.util.Enumeration;

import java.util.List;

import sun.security.util.*;

/**

 * Represents the Freshest CRL Extension.

 *

 * <p>

 * The extension identifies how delta CRL information for a

 * complete CRL is obtained.

 *

 * <p>

 * The extension is defined in Section 5.2.6 of

 * <a href="http://www.ietf.org/rfc/rfc3280.txt">Internet X.509 PKI Certific

ate and Certificate Revocation List (CRL) Profile</a>.

 *

 * <p>

 * Its ASN.1 definition is as follows:

 * <pre>

 *     id-ce-freshestCRL OBJECT IDENTIFIER ::=  { id-ce 46 }

 *

 *     FreshestCRL ::= CRLDistributionPoints

 * </pre>

 *

 * @since 1.6

 */

public class FreshestCRLExtension extends CRLDistributionPointsExtension {

    /**

     * Attribute name.

     */

    public static final String NAME = "FreshestCRL";

    /**

     * Creates a freshest CRL extension.

     * The criticality is set to false.

     *

     * @param distributionPoints the list of delta CRL distribution points.

     */

    public FreshestCRLExtension(List<DistributionPoint> distributionPoints)

        throws IOException {

        super(PKIXExtensions.FreshestCRL_Id, false, distributionPoints, NAME);

    }

    /**

     * Creates the extension from the passed DER encoded value of the same.

     *

     * @param critical true if the extension is to be treated as critical.

     * @param value an array of DER encoded bytes of the actual value.

     * @exception IOException on decoding error.

     */

    public FreshestCRLExtension(Boolean critical, Object value)

    throws IOException {

        super(PKIXExtensions.FreshestCRL_Id, critical.booleanValue(), value,

            NAME);

    }

    /**

     * Writes the extension to the DerOutputStream.

     *

     * @param out the DerOutputStream to write the extension to.

     * @exception IOException on encoding errors.

     */

    public void encode(OutputStream out) throws IOException {

        super.encode(out, PKIXExtensions.FreshestCRL_Id, false);

    }

}