encryptedoutputstream.java

来自「基于Eclipse RCP开发的管理工具」· Java 代码 · 共 65 行

 /*  
  * Copyright 2006 Marcel Schoffelmeer 
  * 
  * Licensed 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 com.s10r.io;

import java.io.IOException;
import java.io.OutputStream;

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

import com.s10r.crypto.CipherUtil;

/*
 * TODO: add preload of small data amount to verify 
 * [ ] simple version number decrypt
 * [ ] elaborate sealed object. 
 */
public class EncryptedOutputStream extends OutputStream
{
    private OutputStream out = null;

    public EncryptedOutputStream(OutputStream out, String password)
    {
        Cipher pbeCipher = CipherUtil.createCipher(Cipher.ENCRYPT_MODE, password);

        this.out = new CipherOutputStream(out, pbeCipher);
    }

    @Override
    public void write(int b) throws IOException
    {
        out.write(b);
    }

    @Override
    public void close() throws IOException
    {
        super.close();
        out.close();
    }

    @Override
    public void flush() throws IOException
    {
        super.flush();
        out.flush();
    }


}