Package org.jclouds.io.payloads

Source Code of org.jclouds.io.payloads.BaseCipherPayload

/*
* 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.jclouds.io.payloads;

import static com.google.common.base.Preconditions.checkNotNull;

import java.io.IOException;
import java.io.OutputStream;
import java.security.Key;

import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;

import org.jclouds.io.Payload;

/**
*
* @author Adrian Cole
*/
public abstract class BaseCipherPayload extends DelegatingPayload {

   private final Key key;

   public BaseCipherPayload(Payload delegate, Key key) {
      super(delegate);
      this.key = checkNotNull(key, "key");
   }

   public abstract Cipher initializeCipher(Key key);

   @Override
   public CipherInputStream getInput() {
      return new CipherInputStream(super.getInput(), initializeCipher(key));
   }

   @Override
   public void writeTo(OutputStream outstream) throws IOException {
      super.writeTo(new CipherOutputStream(outstream, initializeCipher(key)));
   }
}
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