encrypt « Parameter « JSP-Servlet Q&A

1. Servlet Parameter Encryption    stackoverflow.com

Still learning JSP Web Applications here. I have been doing this for a while in my web application but I would like to know a more secured solution. Imagine a Table that displays ...

2. Passing JSP encrypted parameters to a servlet    stackoverflow.com

I want to pass encrypted parameters via a JSP form to frmservlet.I want to pass userid by encrypting it.But it is not decrypt by the frmsrvlet,How can I do this?