Start line:  
End line:  

Snippet Preview

Snippet HTML Code

Stack Overflow Questions
  /*
  * JBoss, Home of Professional Open Source
  * Copyright 2005, JBoss Inc., and individual contributors as indicated
  * by the @authors tag. See the copyright.txt in the distribution for a
  * full listing of individual contributors.
  *
  * This is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as
  * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
 
 package org.jboss.remoting.marshal.encryption;
 
  
 
EncryptingMarshaller and EncryptingMarshaller are a general purpose encryption based marshaller / decompressing unmarshaller pair based on Java's Cipher facilities.

EncryptingMarshaller is subclassed from SerializableMarshaller, and by default it uses super.write() to marshall an object, which is then encrypted. Optionally, it can wrap any other marshaller and use that instead of SerializableMarshaller to marshall an object before it is encrypted. For example,

new EncryptingMarshaller(new HTTPMarshaller())

will create a marshaller that encrypts the output of an HTTPMarshaller.

Author(s):
Anil Saldhana
 
 
 {
   
The serialVersionUID
 
    private static final long serialVersionUID = 1L;
 
    public final static String DATATYPE = "encrypt";
 
    private Marshaller wrappedMarshaller
    
    
    private Cipher cipher = EncryptionManager.getCipher(.);

   
Create a new EncryptingMarshaller.
 
    public EncryptingMarshaller()
    { 
    }
   
   
Create a new EncryptingMarshaller.

Parameters:
algo Cipher Algorithm
key Key
See also:
setCipherAlgorithm(java.lang.String)
 
    public EncryptingMarshaller(String algoKey key)
    { 
        = EncryptionManager.getCipher(.algokey);
    }


   
Create a new EncryptingMarshaller.

Parameters:
marshaller A Marshaller which is used to turn objects into byte streams.
 
    public EncryptingMarshaller(Marshaller marshaller)
    {
        = marshaller;
   }
   
   
Set the Cipher Algorithm to use

   public void setCipherAlgorithm(String algo)
   {
      this. = algo;
       = EncryptionManager.getCipher(.this.);
   }


   
Writes encrypted, marshalled form of dataObject to output.

Parameters:
dataObject arbitrary object to be marshalled
output OutputStream to which output is to be marshalled
version wire format version
   public void write(Object dataObjectOutputStream outputint versionthrows IOException
   { 
      if( == null)
         throw new IllegalStateException("Cipher is null for algo="this.);
      output.flush(); 
      
      //EOS intercepts the close() call and does not close the stream
      EncryptionOutputStream eos = new EncryptionOutputStream(output);
       
      CipherOutputStream cos = new CipherOutputStream(eos);
       
      SerializationManager sm = SerializationStreamFactory.getManagerInstance(getSerializationType());
      ObjectOutputStream oos = sm.createOutput(cos);
      
      if( != null)
      {
         if ( instanceof VersionedMarshaller)
            ((VersionedMarshaller).write(dataObjectoosversion);
         else
            .write(dataObjectoos);
      }
      else
      {
         super.write(dataObjectoosversion);
      }  
      oos.flush();  
      
      //Vagaries of CipherOutputStream which needs a close() to flush at the end
      cos.close(); //Tests fail without this statement - oos.close() should do it
      oos.close(); //There is a need to close cos
   }

   
Returns a EncryptingMarshaller.

Returns:
a EncryptingMarshaller.
Throws:
java.lang.CloneNotSupportedException In practice no exceptions are thrown
   {
      return em;
   } 
New to GrepCode? Check out our FAQ X