Crazy Optimization of Chaocipher…

Okay, this is a minor hack, but I thought it was fun, so I thought I’d write it up here. My original code for simulating the Chaocipher machine proceeded as follows: it found the character in the plaintext wheel (by linear search), then rotated each wheel to get the plain and cipher text entry to […]

More on Chaocipher…

Well, I didn’t have much time left to work on Chaocipher last night, so I left it running on Exhibit 1. It claimed to recover a key that allowed it to match 601 characters of input, but found no better match. But it also uncovered an error in my code. It doesn’t appear that the […]

Progress on the Chaocipher…

My brain has got a bug now. It’s called Chaocipher. Despite the fact that I’m spending my days off with my family, I find that in my odd moments my brain keeps leaping back to Byrne’s cipher. The other night I implemented the basics of key recovery using a chosen plaintext attack (if you have […]

An Implementation of Byrnes’ Chaocipher

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