Analysis of Solitaire Cipher (arxiv.org)

Here is my implementation of chaocipher in arc lisp https://rosettacode.org/wiki/Chaocipher#Arc

> I don't talk about it much, mostly because I made a dumb mistake that resulted in the algorithm not being reversible. Still, for the short message lengths you're likely to use a manual cipher for, it's still secure and will likely remain secure.

https://www.schneier.com/blog/archives/2019/10/more_cryptana...