Please contact your local NI Sales rep and ask them to refer an Alliance Member. Believe me, it's the fastest way to achieve what you need. You will end up with a perfect example of how to do that in LabVIEW. Having said that...
There are nearly infinate ways to encrypt a password. That applies to LabVIEW's G or any other language. Your first step should be a web search on basic encryption algorithms. Once you've got one that you can understand, you should be able to work it through in LabVIEW. If you find that you cannot do that, there are lots of training classes, and of course, the expert Alliance Members out there to help you.
Daniel L. Press
PrimeTest Corp.
www.primetest.com