| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * Licensed 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.onosproject.lisp.msg.authentication; |
| |
| /** |
| * A factory class that returns LISP authentication instance. |
| */ |
| public final class LispAuthenticationFactory { |
| |
| /** |
| * Prevents object instantiation from external. |
| */ |
| private LispAuthenticationFactory() { |
| } |
| |
| /** |
| * Obtains a factory singleton instance. |
| * |
| * @return factory singleton instance |
| */ |
| public static LispAuthenticationFactory getInstance() { |
| return SingletonHelper.INSTANCE; |
| } |
| |
| /** |
| * Generates a new authentication data with given authentication key and |
| * authentication type. |
| * |
| * @param authType authentication key type |
| * @param authKey authentication key string |
| * @param data authentication data |
| * @return authentication data |
| */ |
| public byte[] createAuthenticationData(LispAuthenticationKeyEnum authType, |
| String authKey, byte[] data) { |
| LispMacAuthentication macAuth = new LispMacAuthentication(authType); |
| byte[] authData; |
| switch (authType) { |
| case SHA1: |
| case SHA256: |
| authData = macAuth.getAuthenticationData(authKey, data); |
| break; |
| case NONE: |
| case UNKNOWN: |
| default: |
| authData = macAuth.getAuthenticationData(); |
| break; |
| } |
| return authData; |
| } |
| |
| /** |
| * A private singleton helper class. |
| */ |
| private static final class SingletonHelper { |
| private static final LispAuthenticationFactory INSTANCE = |
| new LispAuthenticationFactory(); |
| private static final String ILLEGAL_ACCESS_MSG = "Should not instantiate this class."; |
| |
| private SingletonHelper() { |
| throw new IllegalAccessError(ILLEGAL_ACCESS_MSG); |
| } |
| } |
| } |