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Enigma Rotor

Rotor number VII from naval Enigma (Serial no. M15796)

 

All models of Enigma contained rotors, to scramble letters during the encryption process.

This rotor has been exploded to show its internal wiring. The electric current coming in to one letter, say N, is re-routed by the wiring, coming out at another letter, in this case R. This output goes on to become the input for the next rotor, again coming out at another letter.

[Bletchley Park]

 

Taken in Bletchley Park

 

Bletchley Park, British government cryptological establishment in operation during World War II. Bletchley Park was where Alan Turing and other agents of the Ultra intelligence project decoded the enemy’s secret messages, most notably those that had been encrypted with the German Enigma and Tunny cipher machines. Experts have suggested that the Bletchley Park code breakers may have shortened the war by as much as two years.

The Bletchley Park site in Buckinghamshire (now in Milton Keynes), England, was about 50 miles (80 km) northwest of London, conveniently located near a railway line that served both Oxford and Cambridge universities. The property consisted of a Victorian manor house and 58 acres (23 hectares) of grounds. The British government acquired it in 1938 and made it a station of the Government Code and Cypher School (GC&CS), designated as Station X. At the start of the war in 1939, the station had only 200 workers, but by late 1944 it had a staff of nearly 9,000, working in three shifts around the clock. Experts at crossword-puzzle solving and chess were among those who were hired. About three-fourths of the workers were women.

To facilitate their work, the staff designed and built equipment, most notably the bulky electromechanical code-breaking machines called Bombes. Later on, in January 1944, came Colossus, an early electronic computer with 1,600 vacuum tubes. The manor house was too small to accommodate everything and everyone, so dozens of wooden outbuildings had to be built. These buildings were called huts, although some were sizable. Turing was working in Hut 8 when he and his associates solved the Enigma. Other new buildings were built from cement blocks and identified by letters, such as Block B.

[Britannica.com]

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Uploaded on April 19, 2020
Taken on September 8, 2019