Tomcat/JCE provider may not be installed. Algorithm DES not available

[ch...@email.unc.edu]

I started a chemistry visualization and high performance computing 
project,
http://molstart.sourceforge.net/
and I would like to implement Kerberos logon capability in the program.

I installed Kerberos from MIT and try Kerberos login. 
It works well from stand alone Java application with
my own callback functions to handle login/password prompt silently,

% java Kerberos

But when I move the authentication part of code into web services on 
top of SOAP/http. Then I have trouble.
The login procedure is failed. Exception message said,

Authentication failed: JCE provider may not be installed. Algorithm DES 
not available

I use Tomcat server that is part of Sun JWSDP, jwsdp-1_0_01.
Could you please tell me how to fix this problem? It is weird, it works 
when not inside the web server environment.
Is there a setting problem in TOMCAT? Thanks!

Chengteh

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JCE provider

[ch...@email.unc.edu]

I have LoginContext.login() exception,

Authentication failed: JCE provider may not be installed. Algorithm DES 
not available

How to configure JCE provider in TOMCAT? 

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