I've done Pontifex from Cryptonomicon on a Commodore 64 for fun. Bruce Schneier came up with it. https://imapenguin.com/2021/05/making-and-breaking-ciphers-on-t

I've done Pontifex from Cryptonomicon on a Commodore 64 for fun. Bruce Schneier came up with it. https://imapenguin.com/2021/05/making-and-breaking-ciphers-on-the-commodore-64-part-12-pontifex-solitaire-from-cryptonomicon/ https://imapenguin.com/2021/05/making-and-breaking-ciphers-o...