| /* |
| * 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.synapse.securevault; |
| |
| import org.apache.synapse.securevault.definition.CipherInformation; |
| import org.apache.synapse.securevault.definition.KeyStoreInformation; |
| import org.apache.synapse.securevault.keystore.KeyStoreWrapper; |
| |
| import javax.crypto.SecretKey; |
| import javax.crypto.spec.SecretKeySpec; |
| import java.security.Key; |
| |
| /** |
| * The Cipher doing symmetric cryptographic operations |
| * Uses default key when these is no SecretKey |
| */ |
| public class SymmetricCipher extends BaseCipher { |
| |
| private SecretKeySpec defaultKeySpec; |
| |
| public SymmetricCipher(CipherInformation cipherInformation, |
| KeyStoreInformation keystoreInformation) { |
| super(cipherInformation, keystoreInformation); |
| } |
| |
| public SymmetricCipher(CipherInformation cipherInformation, KeyStoreWrapper keyStoreWrapper) { |
| super(cipherInformation, keyStoreWrapper); |
| } |
| |
| public SymmetricCipher(CipherInformation cipherInformation, Key key) { |
| super(cipherInformation, key); |
| } |
| |
| public Key getKey(CipherOperationMode operationMode) { |
| SecretKey secretKey = keyStoreWrapper.getSecretKey(); |
| if (secretKey == null) { |
| if (defaultKeySpec == null) { |
| defaultKeySpec = createDefaultKey(); |
| } |
| return defaultKeySpec; |
| } else { |
| return secretKey; |
| } |
| } |
| |
| private SecretKeySpec createDefaultKey() { |
| //TODO use akey generator |
| byte[] keyBytes = new byte[]{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}; |
| return defaultKeySpec = new SecretKeySpec(keyBytes, "AES"); |
| } |
| } |