/* * 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.EncryptedData;import sun.security.krb5.Asn1Exception;import sun.security.util.*;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 KRB-PRIV type. * * <xmp> * KRB-PRIV        ::= [APPLICATION 21] SEQUENCE { *         pvno            [0] INTEGER (5), *         msg-type        [1] INTEGER (21), *                           -- NOTE: there is no [2] tag *         enc-part        [3] EncryptedData -- EncKrbPrivPart * } * </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 KRBPriv {    public int pvno;    public int msgType;    public EncryptedData encPart;     public KRBPriv(EncryptedData new_encPart) {        pvno = Krb5.PVNO;        msgType = Krb5.KRB_PRIV;        encPart = new_encPart;    }     public KRBPriv(byte[] data) throws Asn1Exception,    KrbApErrException, IOException {        init(new DerValue(data));    }     public KRBPriv(DerValue encoding) throws Asn1Exception,    KrbApErrException, IOException {        init(encoding);    }      /**     * Initializes an KRBPriv 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.     * @exception KrbApErrException if the value read from the DER-encoded data     *  stream does not match the pre-defined value.     */    private void init(DerValue encoding) throws Asn1Exception,    KrbApErrException, IOException {        DerValue der, subDer;        if (((encoding.getTag() & (byte)0x1F) != (byte)0x15)            || (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);        subDer = der.getData().getDerValue();        if ((subDer.getTag() & 0x1F) == 0x00) {            pvno = subDer.getData().getBigInteger().intValue();            if (pvno != Krb5.PVNO) {                throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);            }        }        else            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        subDer = der.getData().getDerValue();        if ((subDer.getTag() & 0x1F) == 0x01) {            msgType = subDer.getData().getBigInteger().intValue();            if (msgType != Krb5.KRB_PRIV)                throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE);        }        else            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        encPart = EncryptedData.parse(der.getData(), (byte)0x03, false);        if (der.getData().available() >0)            throw new Asn1Exception(Krb5.ASN1_BAD_ID);    }     /**     * Encodes an KRBPriv 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 {        DerOutputStream temp, bytes;        temp = new DerOutputStream();        temp.putInteger(BigInteger.valueOf(pvno));        bytes = new DerOutputStream();        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp);        temp = new DerOutputStream();        temp.putInteger(BigInteger.valueOf(msgType));        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp);        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), encPart.asn1Encode());        temp = new DerOutputStream();        temp.write(DerValue.tag_Sequence, bytes);        bytes = new DerOutputStream();        bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x15), temp);        return bytes.toByteArray();    } }