It was just a proof of concept thing for a hackathon, hardly industry-grade, but was quite fun to write.

The crypto code was quite fun to write in Clojure; literally yesterday I just got permission to open source it.

If you want to play with it, the code is available here: https://github.com/tombert/scudlib

Since I have the ability work on it in my free time, I'll probably add more schemes.