Problem with Cipher.init()

Question

i am using java 1.4.2 on Windows 2000 Professional
I am using "Assembla" as JCE Provider for Microsoft Keystore. But when i call Cipher.init() i am getting the following error
MSKeyStoreJNI: Could not acquire context for temporary container used for importing public key.
SYSMSG: The keyset is not defined.
The Code is as follow :
-----------------------------import java.util.*;
import javax.crypto.*;
import java.security.*;
import java.security.cert.*;
import se.assembla.jce.provider.ms.*;
// JCE Provider for Microsoft Keystore https://download.assembla.se
public class cipher
   public cipher(String[] args) throws Exception
      Security.addProvider(new MSProvider());
      KeyStore ks = KeyStore.getInstance("msks", "assembla");
      ks.load(null,null);
      X509Certificate cert = null;
      String alias = null;
      for(Enumeration e = ks.aliases(); e.hasMoreElements();)
         alias = (String) e.nextElement();
         if(ks.isKeyEntry(alias))
            cert = (java.security.cert.X509Certificate) ks.getCertificate(alias);
            break;
      Cipher c = Cipher.getInstance("RSA", "assembla");
      c.init(Cipher.ENCRYPT_MODE, cert); // error on this line
   public static void main(String args[])
      try
         new cipher(args);
      catch(Exception e)
         e.printStackTrace();
}--- hasstar
--- [SCJP]
--- url : http://www.myjavaserver.com/~hasstar

Answer 1

Yes, I tried KeyStore ks = KeyStore.getInstance("RSA", "assembla"); instead of msks?
and it is not working. (www.bouncycastle.org)
I tried www.bouncycastle.org, but i don't know how to get Certificates from Microsoft Keystore.
If u know how to get keys from Microsoft Keystore please help