Encrypted communication between java and javascript

There is an embedded computer that runs a Java VM. In this machine runs a small webserver programmed in Java that manages all the get and post responses from the browser. The idea is to crypt the communications between the browser and the webserver, using the AES (rijdael) algorithm. What I would like the program to do is to have a routine in javascript that when submitting a form, crypts the info sent. This info is received in the WebServer and handle by a handlePost routine. This routine should decrypt the info The information sent should be crypted in a dinamyc way, I mean, the info should be always different, using a seed like the date and time, for example. And this embedded PC has only a Java Virtual Machine, so no SSL or similar avaliable. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform The enviroment is the TINI system, an small system with a Java virtual machine The browser should be Internet Explorer mininum version 5.0 and firefox.