Encryptor.java

// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2012 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0

package com.google.appinventor.server.encryption;

/**
 * Encrypts/decrypts byte arrays.
 *
 */
public interface Encryptor {
  /**
   * Encrypts plain text byte array.
   *
   * @param plain plain text byte array
   * @return encrypted byte array
   * @throws EncryptionException if there's a problem with the encryption
   *         process
   */
  byte[] encrypt(byte[] plain) throws EncryptionException;

  /**
   * Decrypts encrypted byte array.
   *
   * @param encrypted encrypted byte array
   * @return decrypted byte array
   * @throws EncryptionException if there's a problem with the decryption
   *         process
   */
  byte[] decrypt(byte[] encrypted) throws EncryptionException;
}