[jagged-chisel]

I would love to build something like this for encryption algorithms that twiddle bits (DES and friends.) Even for the math-based algorithms, but I have a had time imagining how to make those interesting.

[nayuki]

I have Excel spreadsheets showing every bit of the calculation of AES and DES: https://www.nayuki.io/page/aes-cipher-internals-in-excel ; https://www.nayuki.io/page/des-cipher-internals-in-excel

Also, some people have been sharing a video explanation of AES/Rijndael. It is actually rendered from someone's Shockwave Flash movie. https://web.archive.org/web/20051124061027/http://www.cs.bc....

[harrigan]

https://www.youtube.com/watch?v=gP4PqVGudtg is a nice animation of AES. Of course, the inputs are fixed unlike the above.