/* | |
* 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"); | |
} | |
} |