The Chaocipher

July 13th, 2010 admin

The Chaocipher is a mechanical encryption algorithm invented in 1918. No one was able to reverse-engineer the algorithm, given sets of plaintexts and ciphertexts — at least, nobody publicly. On the other hand, I don’t know how many people tried, or even knew about the algorithm. I’d never heard of it before now. Anyway, for the first time, the algorithm…


Originally posted on Schneier

 
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