242 lines
9.6 KiB
Java
242 lines
9.6 KiB
Java
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*
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* (C) Copyright IBM Corp. 1999 All Rights Reserved.
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* Copyright 1997 The Open Group Research Institute. All rights reserved.
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*/
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package sun.security.krb5.internal;
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import sun.security.krb5.*;
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import sun.security.util.*;
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import java.util.Vector;
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import java.io.IOException;
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import java.math.BigInteger;
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/**
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* Implements the ASN.1 EncKDCRepPart type.
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*
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* <pre>{@code
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* EncKDCRepPart ::= SEQUENCE {
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* key [0] EncryptionKey,
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* last-req [1] LastReq,
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* nonce [2] UInt32,
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* key-expiration [3] KerberosTime OPTIONAL,
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* flags [4] TicketFlags,
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* authtime [5] KerberosTime,
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* starttime [6] KerberosTime OPTIONAL,
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* endtime [7] KerberosTime,
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* renew-till [8] KerberosTime OPTIONAL,
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* srealm [9] Realm,
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* sname [10] PrincipalName,
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* caddr [11] HostAddresses OPTIONAL,
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* encrypted-pa-data [12] SEQUENCE OF PA-DATA OPTIONAL
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* }
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* }</pre>
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*
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* <p>
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* This definition reflects the Network Working Group RFC 4120
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* specification available at
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* <a href="http://www.ietf.org/rfc/rfc4120.txt">
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* http://www.ietf.org/rfc/rfc4120.txt</a>.
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*/
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public class EncKDCRepPart {
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public EncryptionKey key;
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public LastReq lastReq;
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public int nonce;
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public KerberosTime keyExpiration; //optional
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public TicketFlags flags;
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public KerberosTime authtime;
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public KerberosTime starttime; //optional
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public KerberosTime endtime;
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public KerberosTime renewTill; //optional
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public PrincipalName sname;
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public HostAddresses caddr; //optional
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public PAData[] pAData; //optional
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public int msgType; //not included in sequence
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public EncKDCRepPart(
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EncryptionKey new_key,
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LastReq new_lastReq,
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int new_nonce,
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KerberosTime new_keyExpiration,
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TicketFlags new_flags,
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KerberosTime new_authtime,
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KerberosTime new_starttime,
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KerberosTime new_endtime,
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KerberosTime new_renewTill,
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PrincipalName new_sname,
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HostAddresses new_caddr,
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PAData[] new_pAData,
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int new_msgType) {
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key = new_key;
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lastReq = new_lastReq;
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nonce = new_nonce;
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keyExpiration = new_keyExpiration;
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flags = new_flags;
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authtime = new_authtime;
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starttime = new_starttime;
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endtime = new_endtime;
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renewTill = new_renewTill;
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sname = new_sname;
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caddr = new_caddr;
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pAData = new_pAData;
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msgType = new_msgType;
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}
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public EncKDCRepPart() {
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}
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public EncKDCRepPart(byte[] data, int rep_type)
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throws Asn1Exception, IOException, RealmException {
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init(new DerValue(data), rep_type);
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}
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public EncKDCRepPart(DerValue encoding, int rep_type)
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throws Asn1Exception, IOException, RealmException {
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init(encoding, rep_type);
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}
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/**
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* Initializes an EncKDCRepPart object.
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*
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* @param encoding a single DER-encoded value.
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* @param rep_type type of the encrypted reply message.
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* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
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* @exception IOException if an I/O error occurs while reading encoded data.
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* @exception RealmException if an error occurs while decoding an Realm object.
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*/
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protected void init(DerValue encoding, int rep_type)
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throws Asn1Exception, IOException, RealmException {
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DerValue der, subDer;
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//implementations return the incorrect tag value, so
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//we don't use the above line; instead we use the following
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msgType = (encoding.getTag() & (byte) 0x1F);
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if (msgType != Krb5.KRB_ENC_AS_REP_PART &&
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msgType != Krb5.KRB_ENC_TGS_REP_PART) {
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throw new Asn1Exception(Krb5.ASN1_BAD_ID);
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}
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der = encoding.getData().getDerValue();
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if (der.getTag() != DerValue.tag_Sequence) {
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throw new Asn1Exception(Krb5.ASN1_BAD_ID);
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}
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key = EncryptionKey.parse(der.getData(), (byte) 0x00, false);
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lastReq = LastReq.parse(der.getData(), (byte) 0x01, false);
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subDer = der.getData().getDerValue();
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if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x02) {
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nonce = subDer.getData().getBigInteger().intValue();
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} else {
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throw new Asn1Exception(Krb5.ASN1_BAD_ID);
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}
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keyExpiration = KerberosTime.parse(der.getData(), (byte) 0x03, true);
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flags = TicketFlags.parse(der.getData(), (byte) 0x04, false);
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authtime = KerberosTime.parse(der.getData(), (byte) 0x05, false);
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starttime = KerberosTime.parse(der.getData(), (byte) 0x06, true);
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endtime = KerberosTime.parse(der.getData(), (byte) 0x07, false);
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renewTill = KerberosTime.parse(der.getData(), (byte) 0x08, true);
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Realm srealm = Realm.parse(der.getData(), (byte) 0x09, false);
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sname = PrincipalName.parse(der.getData(), (byte) 0x0A, false, srealm);
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if (der.getData().available() > 0) {
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caddr = HostAddresses.parse(der.getData(), (byte) 0x0B, true);
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}
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if (der.getData().available() > 0) {
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pAData = PAData.parseSequence(der.getData(), (byte) 0x0C, true);
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}
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// We observe extra data from MSAD
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/*if (der.getData().available() > 0) {
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throw new Asn1Exception(Krb5.ASN1_BAD_ID);
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}*/
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}
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/**
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* Encodes an EncKDCRepPart object.
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* @param rep_type type of encrypted reply message.
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* @return byte array of encoded EncKDCRepPart object.
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* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
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* @exception IOException if an I/O error occurs while reading encoded data.
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*/
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public byte[] asn1Encode(int rep_type) throws Asn1Exception,
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IOException {
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DerOutputStream bytes;
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DerOutputStream temp = new DerOutputStream();
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DerOutputStream out = new DerOutputStream();
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x00), key.asn1Encode());
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x01), lastReq.asn1Encode());
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temp.putInteger(BigInteger.valueOf(nonce));
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x02), temp);
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if (keyExpiration != null) {
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x03), keyExpiration.asn1Encode());
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}
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x04), flags.asn1Encode());
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x05), authtime.asn1Encode());
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if (starttime != null) {
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x06), starttime.asn1Encode());
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}
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x07), endtime.asn1Encode());
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if (renewTill != null) {
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x08), renewTill.asn1Encode());
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}
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x09), sname.getRealm().asn1Encode());
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x0A), sname.asn1Encode());
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if (caddr != null) {
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x0B), caddr.asn1Encode());
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}
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if (pAData != null && pAData.length > 0) {
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temp = new DerOutputStream();
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for (int i = 0; i < pAData.length; i++) {
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temp.write(pAData[i].asn1Encode());
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}
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bytes = new DerOutputStream();
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bytes.write(DerValue.tag_SequenceOf, temp);
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte) 0x0C), bytes);
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}
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//should use the rep_type to build the encoding
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//but other implementations do not; it is ignored and
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//the cached msgType is used instead
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temp = new DerOutputStream();
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temp.write(DerValue.tag_Sequence, out);
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bytes = new DerOutputStream();
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bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION,
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true, (byte) msgType), temp);
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return bytes.toByteArray();
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}
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}
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