I have implemented AES encryption in BlackBerry using code from the Knowledge Base Article ["How to - Use Advanced Encryption"](http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800779/How_to_-_Use_Advanced_Encryption.html?nodeid=800439&vernum=0)

I keep getting error: 

> 
> Module 'net\_rim\_crypto' not found.
> 
> 
> 

In the code I have imported net.rim.device.api.crypto.\*; package, but I can't find the package net.rim.crypto.

Do I need to add any external jar for that?