/* * 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 Authenticator type. * *
* This definition reflects the Network Working Group RFC 4120
* specification available at
*
* http://www.ietf.org/rfc/rfc4120.txt.
*/
public class Authenticator {
public int authenticator_vno;
public Realm crealm;
public PrincipalName cname;
Checksum cksum; //optional
public int cusec;
public KerberosTime ctime;
EncryptionKey subKey; //optional
Integer seqNumber; //optional
public AuthorizationData authorizationData; //optional
public Authenticator(
Realm new_crealm,
PrincipalName new_cname,
Checksum new_cksum,
int new_cusec,
KerberosTime new_ctime,
EncryptionKey new_subKey,
Integer new_seqNumber,
AuthorizationData new_authorizationData) {
authenticator_vno = Krb5.AUTHNETICATOR_VNO;
crealm = new_crealm;
cname = new_cname;
cksum = new_cksum;
cusec = new_cusec;
ctime = new_ctime;
subKey = new_subKey;
seqNumber = new_seqNumber;
authorizationData = new_authorizationData;
}
public Authenticator(byte[] data)
throws Asn1Exception, IOException, KrbApErrException, RealmException {
init(new DerValue(data));
}
public Authenticator(DerValue encoding)
throws Asn1Exception, IOException, KrbApErrException, RealmException {
init(encoding);
}
/**
* Initializes an Authenticator 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.
* @exception RealmException if an error occurs while parsing a Realm object.
*/
private void init(DerValue encoding)
throws Asn1Exception, IOException, KrbApErrException, RealmException {
DerValue der, subDer;
//may not be the correct error code for a tag
//mismatch on an encrypted structure
if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x02)
|| (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() & (byte) 0x1F) != (byte) 0x00) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
authenticator_vno = subDer.getData().getBigInteger().intValue();
if (authenticator_vno != 5) {
throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);
}
crealm = Realm.parse(der.getData(), (byte) 0x01, false);
cname = PrincipalName.parse(der.getData(), (byte) 0x02, false);
cksum = Checksum.parse(der.getData(), (byte) 0x03, true);
subDer = der.getData().getDerValue();
if ((subDer.getTag() & (byte) 0x1F) == 0x04) {
cusec = subDer.getData().getBigInteger().intValue();
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
ctime = KerberosTime.parse(der.getData(), (byte) 0x05, false);
if (der.getData().available() > 0) {
subKey = EncryptionKey.parse(der.getData(), (byte) 0x06, true);
} else {
subKey = null;
seqNumber = null;
authorizationData = null;
}
if (der.getData().available() > 0) {
if ((der.getData().peekByte() & 0x1F) == 0x07) {
subDer = der.getData().getDerValue();
if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x07) {
seqNumber = new Integer(subDer.getData().getBigInteger().intValue());
}
}
} else {
seqNumber = null;
authorizationData = null;
}
if (der.getData().available() > 0) {
authorizationData = AuthorizationData.parse(der.getData(), (byte) 0x08, true);
} else {
authorizationData = null;
}
if (der.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Encodes an Authenticator object.
* @return byte array of encoded Authenticator 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