Isbn: 9786138494591 - John Tiltman: Room 40, Government Communications Headquarters, Military Cross, Bletchley Park (3 results)

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Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware OmniScriptum SRL, Str. Armeneasca 28/1, office 1, 2012 Chisinau 100 pp. Englisch.

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Brigadier John Hessell Tiltman MC (25 May 1894-10 August 1982) was a British Army officer who worked in intelligence, often at or with the Government Code and Cypher School (GC&CS) starting in the 1920s. His intelligence work was largely connected with cryptography, and he showed considerable skill at cryptanalysis. His work in association with Bill Tutte on the German teleprinter ciphers, called at Bletchley Park the FISH ciphers, led to sometimes successful attack methods. It was to exploit those methods that Colossus, the first digital programmable electronic computer, was designed and built.…