Android Open Source - conceal Mac Layered Output Stream

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License

The source code is released under:

BSD License For Conceal software Copyright (c) 2014, Facebook, Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that...

Java Source Code

/*
 *  Copyright (c) 2014, Facebook, Inc.// w w w  .  j  a va  2s  . c  om
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 *
 */

package com.facebook.crypto.benchmarks.mac.streams;

import javax.crypto.Mac;
import java.io.IOException;
import java.io.OutputStream;

public class MacLayeredOutputStream extends OutputStream {

  private Mac mMac;
  private OutputStream mOs;

  public MacLayeredOutputStream(Mac mac, OutputStream os) {
    mMac = mac;
    mOs = os;
  }

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

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

  @Override
  public void write(byte[] buffer) throws IOException {
    write(buffer, 0, buffer.length);
  }

  @Override
  public void write(byte[] buffer, int offset, int count) throws IOException {
    mOs.write(buffer, offset, count);
    mMac.update(buffer, offset, count);
  }

  @Override
  public void write(int oneByte) throws IOException {
    mOs.write(oneByte);
    mMac.update((byte) oneByte);
  }
}

Java Source Code List

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