/*
* 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
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/*
*
* (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();
}
}