[royjacobs]

This reminds me of one of those software protection libraries. I think it was by Syncrosoft, the company that used to protect software like Cubase before it got acquired by the manufacturer of Cubase, Steinberg.

Basically you'd write your algorithms in C++ but instead of using the built-in types like int or float you'd use custom types that had all of their operators overloaded. Your code would look pretty similar to what you'd have before (modulo the type definitions) but when compiled your algorithm would turn into an incredibly inscrutable state machine where some parts of the state machine would come from some kind of protection dongle. Pretty effective.