An MIT OpenCourseWare undergraduate course introducing discrete applied mathematics, covering topics such as number theory and cryptography including RSA. It is not comprehensive and assumes at least calculus background.

One commenter calls it their favorite math class and says it covers some pretty cool material, including RSA.

What commenters said (1)

1. Strongly recommendslhh2012in “Ask HN: Learn Math the Hard Way”

   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.

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