/* * 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.krb5.EncryptionKey;import sun.security.util.*;import java.util.Vector;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 EncKDCRepPart type. * * <xmp> * EncKDCRepPart        ::= SEQUENCE { *      key             [0] EncryptionKey, *      last-req        [1] LastReq, *      nonce           [2] UInt32, *      key-expiration  [3] KerberosTime OPTIONAL, *      flags           [4] TicketFlags, *      authtime        [5] KerberosTime, *      starttime       [6] KerberosTime OPTIONAL, *      endtime         [7] KerberosTime, *      renew-till      [8] KerberosTime OPTIONAL, *      srealm          [9] Realm, *      sname           [10] PrincipalName, *      caddr           [11] HostAddresses 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 EncKDCRepPart {     public EncryptionKey key;    public LastReq lastReq;    public int nonce;    public KerberosTime keyExpiration; //optional    public TicketFlags flags;    public KerberosTime authtime;    public KerberosTime starttime; //optional    public KerberosTime endtime;    public KerberosTime renewTill; //optional    public Realm srealm;    public PrincipalName sname;    public HostAddresses caddr; //optional    public int msgType; //not included in sequence     public EncKDCRepPart(            EncryptionKey new_key,            LastReq new_lastReq,            int new_nonce,            KerberosTime new_keyExpiration,            TicketFlags new_flags,            KerberosTime new_authtime,            KerberosTime new_starttime,            KerberosTime new_endtime,            KerberosTime new_renewTill,            Realm new_srealm,            PrincipalName new_sname,            HostAddresses new_caddr,            int new_msgType) {        key = new_key;        lastReq = new_lastReq;        nonce = new_nonce;        keyExpiration = new_keyExpiration;        flags = new_flags;        authtime = new_authtime;        starttime = new_starttime;        endtime = new_endtime;        renewTill = new_renewTill;        srealm = new_srealm;        sname = new_sname;        caddr = new_caddr;        msgType = new_msgType;    }     public EncKDCRepPart() {    }     public EncKDCRepPart(byte[] data, int rep_type)            throws Asn1Exception, IOException, RealmException {        init(new DerValue(data), rep_type);    }     public EncKDCRepPart(DerValue encoding, int rep_type)            throws Asn1Exception, IOException, RealmException {        init(encoding, rep_type);    }     /**     * Initializes an EncKDCRepPart object.     *     * @param encoding a single DER-encoded value.     * @param rep_type type of the encrypted reply message.     * @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 RealmException if an error occurs while decoding an Realm object.     */    protected void init(DerValue encoding, int rep_type)            throws Asn1Exception, IOException, RealmException {        DerValue der, subDer;        //implementations return the incorrect tag value, so        //we don't use the above line; instead we use the following        msgType = (encoding.getTag() & (byte) 0x1F);        if (msgType != Krb5.KRB_ENC_AS_REP_PART &&                msgType != Krb5.KRB_ENC_TGS_REP_PART) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        der = encoding.getData().getDerValue();        if (der.getTag() != DerValue.tag_Sequence) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        key = EncryptionKey.parse(der.getData(), (byte) 0x00, false);        lastReq = LastReq.parse(der.getData(), (byte) 0x01, false);        subDer = der.getData().getDerValue();        if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x02) {            nonce = subDer.getData().getBigInteger().intValue();        } else {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        keyExpiration = KerberosTime.parse(der.getData(), (byte) 0x03, true);        flags = TicketFlags.parse(der.getData(), (byte) 0x04, false);        authtime = KerberosTime.parse(der.getData(), (byte) 0x05, false);        starttime = KerberosTime.parse(der.getData(), (byte) 0x06, true);        endtime = KerberosTime.parse(der.getData(), (byte) 0x07, false);        renewTill = KerberosTime.parse(der.getData(), (byte) 0x08, true);        srealm = Realm.parse(der.getData(), (byte) 0x09, false);        sname = PrincipalName.parse(der.getData(), (byte) 0x0A, false);        if (der.getData().available() > 0) {            caddr = HostAddresses.parse(der.getData(), (byte) 0x0B, true);        }        if (der.getData().available() > 0) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }    }     /**     * Encodes an EncKDCRepPart object.     * @param rep_type type of encrypted reply message.     * @return byte array of encoded EncKDCRepPart 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(int rep_type) throws Asn1Exception,            IOException {        DerOutputStream temp = new DerOutputStream();        DerOutputStream bytes = new DerOutputStream();        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x00), key.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x01), lastReq.asn1Encode());        temp.putInteger(BigInteger.valueOf(nonce));        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x02), temp);         if (keyExpiration != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x03), keyExpiration.asn1Encode());        }        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x04), flags.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x05), authtime.asn1Encode());        if (starttime != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x06), starttime.asn1Encode());        }        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x07), endtime.asn1Encode());        if (renewTill != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x08), renewTill.asn1Encode());        }        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x09), srealm.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                true, (byte) 0x0A), sname.asn1Encode());        if (caddr != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,                    true, (byte) 0x0B), caddr.asn1Encode());        }        //should use the rep_type to build the encoding        //but other implementations do not; it is ignored and        //the cached msgType is used instead        temp = new DerOutputStream();        temp.write(DerValue.tag_Sequence, bytes);        bytes = new DerOutputStream();        bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION,                true, (byte) msgType), temp);        return bytes.toByteArray();    }}