Khan Academy's Cryptography Unit

The Khan Academy has developed a complete unit on cryptography that fits perfectly into the discrete math class.

For my class this year, I focused on the RSA encryption pieces that fall under Khan's Modern Cryptography lessons.

These lessons provide a conceptual foundation and then make use of the core mathematics, explained in a way that makes it easy to follow the process to perform RSA encryption. After working through much of the math in class, it was a nice summation of what we were learning.

If you are teaching the mathematics of cryptography, I highly recommend these videos.