[Cryptix-users] =?iso-8859-1?Q?R=E9f=2E_=3A_[Cryptix-users]_Symmetric_Decryption_Problem?= + Revocation

[<CPe...@ro...>]

NYI means Not Yet Implemented


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                      WolverinE                                        =
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                      <wol...@ya...>           Pour :    c=
ryp...@li...                                     =
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                      Envoy=E9 par :                          cc :     =
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                      cry...@li...        Objet :   [=
Cryptix-users] Symmetric Decryption Problem + Revocation               =
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                      ceforge.net                                      =
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                      28/05/03 13:09                                   =
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HI

I am working on Web Mail Security and is on deadline
and Symmetric Based Document Encryption is remaining.
The Encryption process is done well but running the
atttached file SymmetricDecryptor code generates the
RuntimeException and not quiet not getting the
solution

Exception : java.lang.RuntimeException: NYI
NYI

There was a good discussion on revocation on this list
and i found one class X509CRL for generating X.509
Revocation Certificate..I do not think any class is
available similar one for OpenPGP..Is there any option
for generating such certificate for OpenPGP

Thanks for the reply....!

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import cryptix.message.EncryptedMessage;
import cryptix.message.LiteralMessage;
import cryptix.message.Message;
import cryptix.message.MessageException;
import cryptix.message.MessageFactory;
import cryptix.message.NotEncryptedToParameterException;

import java.io.FileInputStream;
import java.io.IOException;

import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;

import java.util.Collection;

public class SymmetricDecryptor
{

 public static void main(String args[])
 {
         // Dynamically register both the Cryptix JCE and Cryptix OpenP=
GP
         // providers.

         java.security.Security.addProvider(new
         cryptix.jce.provider.CryptixCrypto());
         java.security.Security.addProvider(new
         cryptix.openpgp.provider.CryptixOpenPGP());

  // read, decrypt and display the message

  symmetricDecrypt();
 }

 public static void symmetricDecrypt()
 {
  // Read the encrypted message

  EncryptedMessage em =3D null;

  try
  {
   FileInputStream fis =3D new FileInputStream("doc");
   MessageFactory mf =3D MessageFactory.getInstance("OpenPGP");

   Collection msgs =3D mf.generateMessages(fis);
   em =3D (EncryptedMessage) msgs.iterator().next();

   fis.close();
  }
  catch(IOException ioe)
  {
   System.out.println("Exception : " + ioe);
   System.exit(-1);
  }
  catch(MessageException me)
  {
   System.out.println("Exception : " + me);
   System.exit(-1);
  }
  catch(NoSuchAlgorithmException nsae)
  {
   System.out.println("Exception : " + nsae);
   System.exit(-1);
  }

  // Decrypt the message and display the original message
  LiteralMessage msg =3D null;
  try
  {
   String str =3D "Passphrase";
   msg =3D (LiteralMessage)em.decrypt(str.toCharArray());
   System.out.println(msg.getTextData());
  }
  catch(NotEncryptedToParameterException netpe)
  {
   System.out.println("Exception : " + netpe);
   System.exit(-1);
  }
  catch(MessageException me)
  {
   System.out.println("Exception : " + me);
   System.exit(-1);
  }
  catch(Exception e)
  {
   System.out.println("Exception : " + e);
   System.out.println(e.getMessage());
   System.exit(-1);
  }

 }
}


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