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List of Enigma machine simulators lists software implementations of the Enigma machine, a rotor cypher device that was invented by German engineer Arthur Scherbius at the end of World War I. [ 1 ] and used in the early- to mid-20th century to protect commercial, [ 2 ] diplomatic, and military communication.
The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the German military. The Enigma machine was considered so secure that it was used to encipher the most top ...
The Enigma machines were a family of portable cipher machines with rotor scramblers. [1] Good operating procedures, properly enforced, would have made the plugboard Enigma machine unbreakable to the Allies at that time. [2] [3] [4] The German plugboard-equipped Enigma became the principal crypto-system of the German Reich and later of other ...
The Enigma machine looked like a typewriter in a wooden box. He called his machine Enigma which is the Greek word for "riddle". Combining three rotors from a set of five, each of the 3 rotor setting with 26 positions, and the plug board with ten pairs of letters connected, the military Enigma has 158,962,555,217,826,360,000 (nearly 159 ...
The German Navy 4-rotor Enigma machine (M4) which was introduced for U-boat traffic on 1 February 1942. The introduction of the fourth rotor was anticipated because captured material dated January 1941 had made reference to the development of a fourth rotor wheel; [ 2 ] indeed, the wiring of the new fourth rotor had already been worked out.
The laboratory was established in 1942 by the Navy and National Cash Register Company to design and manufacture a series of code-breaking machines ("bombes") targeting German Enigma machines, based on earlier work by the British at Bletchley Park (which in turn owed something to pre-war Polish cryptanalytical work). Joseph Desch led the effort. [2]
A series of three rotors from an Enigma machine, used by Germany during World War II Exploded view of an Enigma machine rotor:1-Notched ring, 2-Dot marking the position of the "A" contact, 3-Alphabet "tyre" or ring, 4-Electrical plate contacts, 5-Wire connections, 6-Spring-loaded pin contacts, 7-Spring-loaded ring adjustment pin, 8-Hub, through which fits the central axle, 9-Finger wheel, 10 ...
A machine called the "bombe" is used to expedite the solution. The first machine was built by the Poles and was a hand operated multiple enigma machine. When a possible solution was reached a part would fall off the machine onto the floor with a loud noise. Hence the name "bombe". [3]
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