Cryptographic Engineering for Kids, for Everybody. Scaling down modern cryptography to pencil 'n paper; learn how it really works, without the math degree.
Pocketblock looks really good! After reading your first tutorial / guide, I feel that I actually understand pockenacci, and a little more about encryption in general. I'm looking forward to the next part in the series!
I've written a blog about it too, which you can find here.
Currently, visuals are static in both .tex and CSS; to better demonstrate propagation of plaintext through the Pockenacci cipher, we should animate the current CSS Grid from #17 such that it transitions through all of the steps of key scheduling, the round function, and the MAC.
These are polished stills for the sample Pockenacci plaintext, using the external style sets (colorway.tex); first up is #3, for key scheduling and encryption; some amendments to that will likely be made, with authentication added next.