My favorite math class was probably 18.310, intro to applied math, which is on o...

My favorite math class was probably 18.310, intro to applied math, which is on ocw: http://ocw.mit.edu/courses/mathematics/18-310c-principles-of...

It's not comprehensive by any means, and you probably need to know at least calculus to be ready for most of this, but it covers some pretty cool stuff, including RSA.