The decryption game
by Claudio Parmigiani Recently I (re)watched the movie “ The imitation game” : the English mathematical genius Alan Turing cracks the German Enigma code with help from fellow mathematicians, using an electro-mechanical device called Bombe . At the end of the movie, I found myself wondering: " Would an Apple-1 be able to decrypt a text ciphered by an Enigma machine? If so, how fast would it be? ” The Enigma Machine is well documented in all its versions and variants, and the Internet is full of code and emulators. I am not going to explain the operation principles of the Enigma Machine, on the Internet there is a plenty of valuable sources of knowledge. In the Bibliography section, you will find some link. SEARCHING FOR… THE RIGHT CODE What I was looking for was a short source code that could run in a few kiB of memory. In this article, I will not go deep into the mathematical theories behind the "Enigma", and I will not dwell on the different decryption technique