classdefnotfoundexception in iplanet

I am using Triple des encryption /decryption algorithm.In tomcat server it works fine
but when uploaded on Planet server it displays following error.Please help to resolve this problem

Caused by: java.lang.ClassNotFoundException: javax.crypto.CipherSpi
at java.net.URLClassLoader$1.run(URLClassLoader.java: 200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:188)
at sun.misc.Launcher$ExtClassLoader.findClass(Launche r.java:229)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 03)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)
at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:316)

Thanks in advance.... :(happy):

Have you got the jce.jar file deployed with your app?
I think that's the crypto one.