except in this case the Enigma was more of a mechanical one-time-pad that without possession of it, intercepting the daily cypherkey was useless
I believe Ozzy Osbourne has one of these machines. (Yes that Ozzy! He is a WW2 history nut and has quite a collection of items.
According to the movie “The Imitation Game”, Alan Turing’s created an early computer that figure out the daily code the Germans had. Because the words “weather” and “Heil Hitler” were in every message, they were able to use the computer to break the daily code. Then, from that, Turing used a mathematical formula that would give the Allies as much intelligence from Enigma possible without alerting the Nazis that their code was broken. Fascinating movie.
BFL