3 ms·
Isn't that a very simple substitution cipher (any clear text letter is substituted by two letters of cipher text, with a fixed one-to-one correspondence)? And
by FabHK 7d ago
Isn't that a very simple substitution cipher (any clear text letter is substituted by two letters of cipher text, with a fixed one-to-one correspondence)?
And aren't they all amenable to very simple cryptanalysis, at least if the encrypted text is long enough, by counting how often certain letters appear, and then trying to plug in reasonable guesses?
https://en.wikipedia.org/wiki/Substitution_cipher https://en.wikipedia.org/wiki/Substitution_cipher
- jgrahamc 7d agoIt is not a simple substitution using the polybius square with pairs of letters from ADFGVX mapping to 25 letters of the alphabet. The first step is to take each letter and turn it into a pair of letters from ADFGVX but the second step is then a keyed columnar transposition.
- oakchris1955 7d ago"The model used “TRUPPENVERSCHIEBUNG” as the encryption word, as described on pgs. 214-215 of J. Rives Childs's “The History and Principles of German Military Ciphers, 1914–1918”" Even if it isn't a simple substitution cipher as you said, all the model did was try a decryption key that had already been found and was publicly accessible. This is basically a nothingburger.
- jgrahamc 7d agoOh yes, certainly, I am not blown away by what was done here. The AI had access to the cipher type and a list of keys.
- deleted 7d ago[deleted]
- FabHK 7d agoAh, thanks, seems that's in the second part, but not very well explained.