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 }