| /* |
| * 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. |
| * |
| * <xmp> |
| * Authenticator ::= [APPLICATION 2] SEQUENCE { |
| * authenticator-vno [0] INTEGER (5), |
| * crealm [1] Realm, |
| * cname [2] PrincipalName, |
| * cksum [3] Checksum OPTIONAL, |
| * cusec [4] Microseconds, |
| * ctime [5] KerberosTime, |
| * subkey [6] EncryptionKey OPTIONAL, |
| * seq-number [7] UInt32 OPTIONAL, |
| * authorization-data [8] AuthorizationData 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 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<DerValue> v = new Vector<>(); |
| DerOutputStream temp = new DerOutputStream(); |
| temp.putInteger(BigInteger.valueOf(authenticator_vno)); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp.toByteArray())); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), crealm.asn1Encode())); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), cname.asn1Encode())); |
| if (cksum != null) { |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x03), cksum.asn1Encode())); |
| } |
| temp = new DerOutputStream(); |
| temp.putInteger(BigInteger.valueOf(cusec)); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x04), temp.toByteArray())); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x05), ctime.asn1Encode())); |
| if (subKey != null) { |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x06), subKey.asn1Encode())); |
| } |
| if (seqNumber != null) { |
| temp = new DerOutputStream(); |
| // encode as an unsigned integer (UInt32) |
| temp.putInteger(BigInteger.valueOf(seqNumber.longValue())); |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x07), temp.toByteArray())); |
| } |
| if (authorizationData != null) { |
| v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x08), authorizationData.asn1Encode())); |
| } |
| DerValue der[] = new DerValue[v.size()]; |
| v.copyInto(der); |
| temp = new DerOutputStream(); |
| temp.putSequence(der); |
| DerOutputStream out = new DerOutputStream(); |
| out.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x02), temp); |
| return out.toByteArray(); |
| } |
| |
| public final Checksum getChecksum() { |
| return cksum; |
| } |
| |
| public final Integer getSeqNumber() { |
| return seqNumber; |
| } |
| |
| public final EncryptionKey getSubKey() { |
| return subKey; |
| } |
| } |
