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The machine was developed by British mathematician Alan Turing, and it was used to decode messages sent by the Nazi military. Bought for $115, a WWII Enigma machine sells for $51,000 Skip to main ...
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]
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-M4 key machine Key manual of the Kriegsmarine "Der Schlüssel M".. The Enigma-M4 (also called Schlüssel M, more precisely Schlüssel M Form M4) is a rotor key machine that was used for encrypted communication by the German Kriegsmarine during World War II from October 1941.
A Polish Enigma "double" was a machine produced by the Polish Biuro Szyfrów that replicated the German Enigma machine. The Enigma double was one result of Marian Rejewski 's remarkable achievement of determining the wirings of the Enigma's rotors and reflectors.
The M-209 was designed by Swedish cryptographer Boris Hagelin in response to a request for such a portable cipher machine, and was an improvement of an earlier machine, the C-36. The M-209 is about the size of a lunchbox , in its final form measuring 3 + 1 ⁄ 4 by 5 + 1 ⁄ 2 by 7 inches (83 mm × 140 mm × 178 mm) and weighing 6 pounds (2.7 ...
NEMA was declassified on 9 July 1992, and machines were offered for sale to the public on 4 May 1994. The NEMA machine was a Swiss rotor machine , designed to replace commercial Enigma machines . NEMA uses 10 wheels, of which one is a reflector, four are normal rotors, and the remaining five are "Drive wheels", which control the stepping of the ...