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.ws.security.conversation.dkalgo;
21
22 import org.apache.ws.security.conversation.ConversationConstants;
23 import org.apache.ws.security.conversation.ConversationException;
24
25 /**
26 * @author Ruchith Fernando
27 */
28
29 public final class AlgoFactory {
30
31 private AlgoFactory() {
32 // Complete
33 }
34
35 /**
36 * This gives a DerivationAlgorithm instance from the default set of algorithms provided
37 *
38 * @param algorithm The algo identifier @see DeivationAlgorithm
39 * @return A derivation algorithm
40 * @throws ConversationException If the specified algorithm is not available
41 * in default implementations
42 */
43 public static DerivationAlgorithm getInstance(String algorithm) throws
44 ConversationException {
45 if ((ConversationConstants.DerivationAlgorithm.P_SHA_1_2005_12).equals(algorithm)
46 || (ConversationConstants.DerivationAlgorithm.P_SHA_1).equals(algorithm)) {
47 return new P_SHA1();
48 } else {
49 throw new ConversationException("No such algorithm");
50 }
51 }
52
53 }