Sir Eric Malcolm Jones was a British intelligence officer who was director of the British signals intelligence agency, GCHQ from 1952 to 1960.
Hut 3 with a blast wall rebuilt by Bletchley Park Trust
The Bombe was an electro-mechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II. The British Bombe was developed from the
A wartime picture of a Bletchley Park Bombe
A three-rotor Enigma with plugboard (Steckerbrett)
The plugboard of an Enigma machine, showing two pairs of letters swapped: S–O and A–J. During World War II, ten plugboard connections were made.
A German Enigma key list with machine settings for each day of one month