/*
* 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");
}
}