/*
* 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.shared.crypto.encryption;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.DESKeySpec;
import org.apache.directory.server.kerberos.shared.messages.value.EncryptionKey;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Test cases for random-to-key functions for DES-, DES3-, AES-, and RC4-based
* encryption types.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class RandomKeyFactoryTest
{
/**
* Tests that random DES keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateDesKey() throws Exception
{
KeyGenerator keygen = KeyGenerator.getInstance( "DES" );
SecretKey key = keygen.generateKey();
assertEquals( "DES key size", 8, key.getEncoded().length );
assertTrue( DESKeySpec.isParityAdjusted( key.getEncoded(), 0 ) );
}
/**
* Tests that random Triple-DES keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateTripleDesKey() throws Exception
{
KeyGenerator keygen = KeyGenerator.getInstance( "DESede" );
SecretKey key = keygen.generateKey();
assertEquals( "DESede key size", 24, key.getEncoded().length );
}
/**
* Tests that random AES128 keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateAes128Key() throws Exception
{
KeyGenerator keygen = KeyGenerator.getInstance( "AES" );
keygen.init( 128 );
SecretKey key = keygen.generateKey();
assertEquals( "AES key size", 16, key.getEncoded().length );
}
/**
* Tests that random AES256 keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateAes256Key() throws Exception
{
KeyGenerator keygen = KeyGenerator.getInstance( "AES" );
keygen.init( 256 );
SecretKey key = keygen.generateKey();
assertEquals( "AES key size", 32, key.getEncoded().length );
}
/**
* Tests that random ARCFOUR keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateArcFourKey() throws Exception
{
if ( !VendorHelper.isArcFourHmacSupported() )
{
return;
}
KeyGenerator keygen = KeyGenerator.getInstance( "ARCFOUR" );
SecretKey key = keygen.generateKey();
assertEquals( "ARCFOUR key size", 16, key.getEncoded().length );
}
/**
* Tests that random RC4 keys can be generated.
*
* @throws Exception
*/
@Test
public void testGenerateRc4Key() throws Exception
{
if ( !VendorHelper.isArcFourHmacSupported() )
{
return;
}
KeyGenerator keygen = KeyGenerator.getInstance( "RC4" );
SecretKey key = keygen.generateKey();
assertEquals( "RC4 key size", 16, key.getEncoded().length );
}
/**
* Tests that random key generation can be performed by the factory for multiple cipher types.
*
* @throws Exception
*/
@Test
public void testRandomKeyFactory() throws Exception
{
Map<EncryptionType, EncryptionKey> map = RandomKeyFactory.getRandomKeys();
EncryptionKey kerberosKey = map.get( EncryptionType.DES_CBC_MD5 );
EncryptionType keyType = kerberosKey.getKeyType();
int keyLength = kerberosKey.getKeyValue().length;
assertEquals( keyType, EncryptionType.DES_CBC_MD5 );
assertEquals( keyLength, 8 );
kerberosKey = map.get( EncryptionType.DES3_CBC_SHA1_KD );
keyType = kerberosKey.getKeyType();
keyLength = kerberosKey.getKeyValue().length;
assertEquals( keyType, EncryptionType.DES3_CBC_SHA1_KD );
assertEquals( keyLength, 24 );
kerberosKey = map.get( EncryptionType.RC4_HMAC );
keyType = kerberosKey.getKeyType();
keyLength = kerberosKey.getKeyValue().length;
if ( VendorHelper.isArcFourHmacSupported() )
{
assertEquals( keyType, EncryptionType.RC4_HMAC );
assertEquals( keyLength, 16 );
}
kerberosKey = map.get( EncryptionType.AES128_CTS_HMAC_SHA1_96 );
keyType = kerberosKey.getKeyType();
keyLength = kerberosKey.getKeyValue().length;
assertEquals( keyType, EncryptionType.AES128_CTS_HMAC_SHA1_96 );
assertEquals( keyLength, 16 );
kerberosKey = map.get( EncryptionType.AES256_CTS_HMAC_SHA1_96 );
keyType = kerberosKey.getKeyType();
keyLength = kerberosKey.getKeyValue().length;
assertEquals( keyType, EncryptionType.AES256_CTS_HMAC_SHA1_96 );
assertEquals( keyLength, 32 );
}
/**
* Tests that random key generation can be performed by the factory for a specified cipher type.
*
* @throws Exception
*/
@Test
public void testRandomKeyFactoryOnlyDes() throws Exception
{
Set<EncryptionType> encryptionTypes = new HashSet<EncryptionType>();
encryptionTypes.add( EncryptionType.DES_CBC_MD5 );
Map<EncryptionType, EncryptionKey> map = RandomKeyFactory.getRandomKeys( encryptionTypes );
assertEquals( "List length", 1, map.values().size() );
EncryptionKey kerberosKey = map.get( EncryptionType.DES_CBC_MD5 );
EncryptionType keyType = kerberosKey.getKeyType();
int keyLength = kerberosKey.getKeyValue().length;
assertEquals( keyType, EncryptionType.DES_CBC_MD5 );
assertEquals( keyLength, 8 );
}
}