This is extremely disappointing to see as a website.
The thing is, I can't in good conscience use your site because you want me to encrypt my files without using SSL. How do I know what I am encrypting is what I uploaded?
Then there's the next issue - how do I know that you don't have the ability to randomly decrypt my files? That you aren't storing them anywhere?
TL;DR: I can't review or recommend a site I can't (in good conscience) use. Whack it behind SSL (which may require going off Free Hosting) and then I can review your site.