Today’s AI can crack second world war Enigma code ‘in short order’, experts say

Crowning achievement of Alan Turing’s codebreakers is now ‘straightforward’, according to computer scientists

The Enigma device used by the Axis powers was an electro-mechanical machine that resembled a typewriter, with three rotors that each had 26 possible positions, a reflector that sent the signal back through the rotors and a plugboard that swapped pairs of letters. File picture: PA

The Enigma code was a fiendish cipher that took Alan Turing and his fellow codebreakers a herculean effort to crack. Yet experts say it would have crumbled in the face of modern computing.

While Polish experts broke early versions of the Enigma code in the 1930s and built anti-Enigma machines, subsequent security upgrades by the Germans meant Turing had to develop new machines, or “Bombes”, to help his team of codebreakers decipher enemy messages. By 1943, the machines could decipher two messages every minute.