/* * Copyright (c) 1997, 2002, Oracle and/or its affiliates. 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.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.security.x509; import java.io.IOException;import java.io.InputStream;import java.math.BigInteger; import sun.security.util.*; /** * This class defines the SerialNumber class used by certificates. * * @author Amit Kapoor * @author Hemma Prafullchandra */public class SerialNumber {    private BigInteger  serialNum;     // Construct the class from the DerValue    private void construct(DerValue derVal) throws IOException {        serialNum = derVal.getBigInteger();        if (derVal.data.available() != 0) {            throw new IOException("Excess SerialNumber data");        }    }     /**     * The default constructor for this class using BigInteger.     *     * @param num the BigInteger number used to create the serial number.     */    public SerialNumber(BigInteger num) {        serialNum = num;    }     /**     * The default constructor for this class using int.     *     * @param num the BigInteger number used to create the serial number.     */    public SerialNumber(int num) {        serialNum = BigInteger.valueOf(num);    }     /**     * Create the object, decoding the values from the passed DER stream.     *     * @param in the DerInputStream to read the SerialNumber from.     * @exception IOException on decoding errors.     */    public SerialNumber(DerInputStream in) throws IOException {        DerValue derVal = in.getDerValue();        construct(derVal);    }     /**     * Create the object, decoding the values from the passed DerValue.     *     * @param val the DerValue to read the SerialNumber from.     * @exception IOException on decoding errors.     */    public SerialNumber(DerValue val) throws IOException {        construct(val);    }     /**     * Create the object, decoding the values from the passed stream.     *     * @param in the InputStream to read the SerialNumber from.     * @exception IOException on decoding errors.     */    public SerialNumber(InputStream in) throws IOException {        DerValue derVal = new DerValue(in);        construct(derVal);    }     /**     * Return the SerialNumber as user readable string.     */    public String toString() {        return ("SerialNumber: [" + Debug.toHexString(serialNum) + "]");    }     /**     * Encode the SerialNumber in DER form to the stream.     *     * @param out the DerOutputStream to marshal the contents to.     * @exception IOException on errors.     */    public void encode(DerOutputStream out) throws IOException {        out.putInteger(serialNum);    }     /**     * Return the serial number.     */    public BigInteger getNumber() {        return serialNum;    }}