1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.server.kerberos.shared.crypto.encryption;
21
22
23 /**
24 * Helper for determining whether various ciphers are supported by the JRE. For now
25 * determinations are based solely on JRE vendor.
26 *
27 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
28 * @version $Rev$, $Date$
29 */
30 public class VendorHelper
31 {
32 private static final String vendor = System.getProperty( "java.vendor" ).toLowerCase();
33
34
35 static String getTripleDesAlgorithm()
36 {
37 if ( isIbm() )
38 {
39 return "3DES";
40 }
41 else
42 {
43 return "DESede";
44 }
45 }
46
47
48 static boolean isCtsSupported()
49 {
50 return vendor.contains( "sun" );
51 }
52
53
54 static boolean isArcFourHmacSupported()
55 {
56 return vendor.contains( "sun" );
57 }
58
59
60 static boolean isTripleDesSupported()
61 {
62 return vendor.contains( "sun" );
63 }
64
65
66 static boolean isIbm()
67 {
68 return vendor.contains( "ibm" );
69 }
70 }