Here's his reply (screen snip). I don't think internet access has anything to do with cracking RAR files, but I don't really have a clue about his algorithm.
Care to explain a bit more, OP?
Care to explain a bit more, OP?
Mawhahaha why is this so amusing So many jerks and assholes on here like me, I'm enjoying this too much 
I guess we have something in common then So many jerks and assholes on here like me, I'm enjoying this too much