jKPU

A cryptoprocessor is a processor that does not do or use any encryption or decryption (thus escapes US export controls), but which works natively on encrypted data and code. Almost any encryption is possible, including "none at all". The trick is that a computer famously and happily takes garbage in and puts garbage out, just as happily as it does "2+2=4", so all we have to do is change our OWN idea of what is garbage and what is sense and the computer will remain happy but we then have a means of doing computation in public that looks like garbage to everyone else,. This project builds a cryptoprocessor model in Java. It works with any encryptions of your choosing but any encryption you do for it or choose to build into it is your own business. There's no encryption here!
(see the lKPU project for a synthesizable hardware model in Clash).