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Reply To: Let’s talk about the Playfair cipher

A Tale of 2 Secrets › Forums › T.E.M.P.E.S.T. › Let’s talk about the Playfair cipher › Reply To: Let’s talk about the Playfair cipher

11th January 2026 at 2:01 pm #115138
_madness_
Participant

Guys,
I think there is already a grid-based cipher that swaps letters after each letter is enciphered, and it might by called Handycipher or LC4.

And if anyone cares, there is a paper out there somewhere called “Breaking the second Hutton challenge”, or some nonsense like that. I think it explains Hutton’s cipher and some ideas about analyzing it.

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