/*
* 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.hadoop.hbase.io.crypto;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.io.crypto.aes.AES;
/**
* The default cipher provider. Supports AES via the JCE.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public final class DefaultCipherProvider implements CipherProvider {
private static DefaultCipherProvider instance;
public static DefaultCipherProvider getInstance() {
if (instance != null) {
return instance;
}
instance = new DefaultCipherProvider();
return instance;
}
private Configuration conf = HBaseConfiguration.create();
// Prevent instantiation
private DefaultCipherProvider() { }
@Override
public Configuration getConf() {
return conf;
}
@Override
public void setConf(Configuration conf) {
this.conf = conf;
}
@Override
public String getName() {
return "default";
}
@Override
public Cipher getCipher(String name) {
if (name.equalsIgnoreCase("AES")) {
return new AES(this);
}
throw new RuntimeException("Cipher '" + name + "' is not supported by provider '" +
getName() + "'");
}
@Override
public String[] getSupportedCiphers() {
return new String[] { "AES" };
}
}