/* * 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. */ /* * *  (C) Copyright IBM Corp. 1999 All Rights Reserved. *  Copyright 1997 The Open Group Research Institute.  All rights reserved. */ package sun.security.krb5.internal; import sun.security.krb5.*;import sun.security.util.*;import java.util.Vector;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 EncAPRepPart type. * * <xmp> * EncAPRepPart ::= [APPLICATION 27] SEQUENCE { *      ctime           [0] KerberosTime, *      cusec           [1] Microseconds, *      subkey          [2] EncryptionKey OPTIONAL, *      seq-number      [3] UInt32 OPTIONAL * } * </xmp> * * <p> * This definition reflects the Network Working Group RFC 4120 * specification available at * <a href="http://www.ietf.org/rfc/rfc4120.txt"> * http://www.ietf.org/rfc/rfc4120.txt</a>. */public class EncAPRepPart {     public KerberosTime ctime;    public int cusec;    EncryptionKey subKey; //optional    Integer seqNumber; //optional     public EncAPRepPart(            KerberosTime new_ctime,            int new_cusec,            EncryptionKey new_subKey,            Integer new_seqNumber) {        ctime = new_ctime;        cusec = new_cusec;        subKey = new_subKey;        seqNumber = new_seqNumber;    }     public EncAPRepPart(byte[] data)            throws Asn1Exception, IOException {        init(new DerValue(data));    }     public EncAPRepPart(DerValue encoding)            throws Asn1Exception, IOException {        init(encoding);    }     /**     * Initializes an EncaPRepPart object.     * @param encoding a single DER-encoded value.     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.     * @exception IOException if an I/O error occurs while reading encoded data.     */    private void init(DerValue encoding) throws Asn1Exception, IOException {        DerValue der, subDer;        if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1B)                || (encoding.isApplication() != true)                || (encoding.isConstructed() != true)) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        der = encoding.getData().getDerValue();        if (der.getTag() != DerValue.tag_Sequence) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        ctime = KerberosTime.parse(der.getData(), (byte) 0x00, true);        subDer = der.getData().getDerValue();        if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x01) {            cusec = subDer.getData().getBigInteger().intValue();        } else {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        if (der.getData().available() > 0) {            subKey = EncryptionKey.parse(der.getData(), (byte) 0x02, true);        } else {            subKey = null;            seqNumber = null;        }        if (der.getData().available() > 0) {            subDer = der.getData().getDerValue();            if ((subDer.getTag() & 0x1F) != 0x03) {                throw new Asn1Exception(Krb5.ASN1_BAD_ID);            }            seqNumber = new Integer(subDer.getData().getBigInteger().intValue());        } else {            seqNumber = null;        }        if (der.getData().available() > 0) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }    }     /**     * Encodes an EncAPRepPart object.     * @return byte array of encoded EncAPRepPart object.     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.     * @exception IOException if an I/O error occurs while reading encoded data.     */    public byte[] asn1Encode() throws Asn1Exception, IOException {        Vector<DerValue> v = new Vector<>();        DerOutputStream temp = new DerOutputStream();        v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x00), ctime.asn1Encode()));        temp.putInteger(BigInteger.valueOf(cusec));        v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x01), temp.toByteArray()));        if (subKey != null) {            v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x02), subKey.asn1Encode()));        }        if (seqNumber != null) {            temp = new DerOutputStream();            // encode as an unsigned integer (UInt32)            temp.putInteger(BigInteger.valueOf(seqNumber.longValue()));            v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x03), temp.toByteArray()));        }        DerValue der[] = new DerValue[v.size()];        v.copyInto(der);        temp = new DerOutputStream();        temp.putSequence(der);        DerOutputStream out = new DerOutputStream();        out.write(DerValue.createTag(DerValue.TAG_APPLICATION,                true, (byte) 0x1B), temp);        return out.toByteArray();    }     public final EncryptionKey getSubKey() {        return subKey;    }     public final Integer getSeqNumber() {        return seqNumber;    }}