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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.server.kerberos.protocol;
import javax.security.auth.kerberos.KerberosPrincipal;
import org.apache.directory.server.kerberos.kdc.KdcServer;
import org.apache.directory.server.kerberos.protocol.AbstractAuthenticationServiceTest.KrbDummySession;
import org.apache.directory.server.kerberos.shared.crypto.encryption.CipherTextHandler;
import org.apache.directory.server.kerberos.shared.messages.ErrorMessage;
import org.apache.directory.server.kerberos.shared.messages.KdcRequest;
import org.apache.directory.server.kerberos.shared.messages.components.EncTicketPartModifier;
import org.apache.directory.server.kerberos.shared.messages.components.Ticket;
import org.apache.directory.server.kerberos.shared.messages.value.EncryptionKey;
import org.apache.directory.server.kerberos.shared.messages.value.KdcOptions;
import org.apache.directory.server.kerberos.shared.messages.value.KerberosTime;
import org.apache.directory.server.kerberos.shared.messages.value.RequestBody;
import org.apache.directory.server.kerberos.shared.messages.value.RequestBodyModifier;
import org.apache.directory.server.kerberos.shared.store.PrincipalStore;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
/**
* Test case for RFC 4120 Section 3.7. "User-to-User Authentication Exchanges." This
* is option "ENC-TKT-IN-SKEY."
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class EncTktInSkeyTest extends AbstractTicketGrantingServiceTest
{
private KdcServer config;
private PrincipalStore store;
private KerberosProtocolHandler handler;
private KrbDummySession session;
/**
* Creates a new instance of {@link EncTktInSkeyTest}.
*/
@Before
public void setUp()
{
config = new KdcServer();
/*
* Body checksum verification must be disabled because we are bypassing
* the codecs, where the body bytes are set on the KdcRequest message.
*/
config.setBodyChecksumVerified( false );
store = new MapPrincipalStoreImpl();
handler = new KerberosProtocolHandler( config, store );
session = new KrbDummySession();
lockBox = new CipherTextHandler();
}
/**
* Shutdown the Kerberos server
*/
@After
public void shutDown()
{
config.stop();
}
/**
* If the ENC-TKT-IN-SKEY option has been specified and an additional ticket
* has been included in the request, it indicates that the client is using
* user-to-user authentication to prove its identity to a server that does
* not have access to a persistent key. Section 3.7 describes the effect
* of this option on the entire Kerberos protocol. When generating the
* KRB_TGS_REP message, this option in the KRB_TGS_REQ message tells the KDC
* to decrypt the additional ticket using the key for the server to which the
* additional ticket was issued and to verify that it is a TGT. If the name
* of the requested server is missing from the request, the name of the client
* in the additional ticket will be used. Otherwise, the name of the requested
* server will be compared to the name of the client in the additional ticket.
* If it is different, the request will be rejected. If the request succeeds,
* the session key from the additional ticket will be used to encrypt the new
* ticket that is issued instead of using the key of the server for which the
* new ticket will be used.
*
* @throws Exception
*/
@Test
public void testEncTktInSkey() throws Exception
{
// Get the mutable ticket part.
KerberosPrincipal clientPrincipal = new KerberosPrincipal( "hnelson@EXAMPLE.COM" );
EncTicketPartModifier encTicketPartModifier = getTicketArchetype( clientPrincipal );
// Make changes to test.
// Seal the ticket for the server.
KerberosPrincipal serverPrincipal = new KerberosPrincipal( "krbtgt/EXAMPLE.COM@EXAMPLE.COM" );
String passPhrase = "randomKey";
EncryptionKey serverKey = getEncryptionKey( serverPrincipal, passPhrase );
Ticket tgt = getTicket( encTicketPartModifier, serverPrincipal, serverKey );
RequestBodyModifier modifier = new RequestBodyModifier();
modifier.setServerName( getPrincipalName( "ldap/ldap.example.com@EXAMPLE.COM" ) );
modifier.setRealm( "EXAMPLE.COM" );
modifier.setEType( config.getEncryptionTypes() );
modifier.setNonce( random.nextInt() );
KdcOptions kdcOptions = new KdcOptions();
kdcOptions.set( KdcOptions.ENC_TKT_IN_SKEY );
modifier.setKdcOptions( kdcOptions );
long now = System.currentTimeMillis();
KerberosTime requestedEndTime = new KerberosTime( now + 1 * KerberosTime.DAY );
modifier.setTill( requestedEndTime );
KerberosTime requestedRenewTillTime = new KerberosTime( now + KerberosTime.WEEK / 2 );
modifier.setRtime( requestedRenewTillTime );
RequestBody requestBody = modifier.getRequestBody();
KdcRequest message = getKdcRequest( tgt, requestBody );
handler.messageReceived( session, message );
ErrorMessage error = ( ErrorMessage ) session.getMessage();
assertEquals( "KDC cannot accommodate requested option", 13, error.getErrorCode() );
}
}