Arthur Scherbius

Jacob Ludolf Arthur Scherbius was a German electrical engineer who is best known for inventing the mechanical rotor cipher Enigma machine. He patented the invention and later sold the machine under the brand name Enigma. Starting in 1923 the Enigma was used by the Reichswehr who began to encrypt their communications in 1930 and subsequently from March 1935, the Wehrmacht onwards to encrypt its secret communications