enigma

wehrmacht M3 · 3 rotors · plugboard · authentic 1942 wiring

rotors (left to right: slow → fast)

reflector

plugboard pairs (e.g. AB CD EF — max 10)

plaintext (A-Z only)

cipher

enigma is symmetric: feed the cipher back in with the same settings and you get the plaintext.
this is the M3 the kriegsmarine used. broken at bletchley by 1941.

← z5