Prof by Dermot Turing

Author:Dermot Turing
Language: eng
Format: epub
ISBN: 9780750965248
Publisher: The History Press
Published: 2015-08-18T16:00:00+00:00

Deceiver of men

In his new job as guardian of secrets, and designer of machines, Alan gravitated towards another secret government establishment, located less than five miles from Bletchley, and hiding under another innocuous cover name. This was the ‘Radio Security Service’ at Hanslope Park. Here Alan was going to try to design a secure encrypted telephone which weighed less than 50 tons.

Alan started work on his speech system in May 1943. Speech encipherment was not simply for the likes of Churchill and Roosevelt, for whose conferences 50-ton monsters might be acceptable. Alan’s new machine was to be used on the go, for ‘tank-to-tank and plane-to-plane work’. As well as portability it would have three units: an audio sampler, a key unit to produce the cipher (which, by flipping a switch, could also serve to decipher), and a combiner to add the key to the signal. Alan, being Alan, rolled up his sleeves and got stuck straight in with a soldering iron.

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