Editing Alan Turing (section)

===Delilah===
Following his work at [[Bell Labs]] in the US,<ref>{{Harvnb|Hodges|1983|pp=245–250}}</ref> Turing pursued the idea of electronic enciphering of speech in the telephone system. In the latter part of the war, he moved to work for the Secret Service's Radio Security Service (later [[Her Majesty's Government Communications Centre|HMGCC]]) at [[Hanslope Park]].<ref>{{cite journal| last = Harper| first = John| author-link = John Harper (computer engineer)| title = Delilah Voice Secrecy System| journal = Resurrection: The Journal of the Computer Conservation Society| issue = 101| pages = 8–9| publisher = The Computer Conservation Society| date = Spring 2023| url = https://www.computerconservationsociety.org/resurrection/res101.htm#d| access-date = 28 June 2023}}</ref><ref>{{cite journal| last = Harper| first = John| author-link = John Harper (computer engineer)| title = Delilah Voice Secrecy System [part 2]: The Design, Development and Commissioning of Delilah in 1943 – 1945| journal = Resurrection: The Journal of the Computer Conservation Society| issue = 102| pages = 16–19| publisher = The Computer Conservation Society| date = Summer 2023| url = https://www.computerconservationsociety.org/resurrection/res102.htm#c| access-date = 28 June 2023| archive-date = 3 July 2023| archive-url = https://web.archive.org/web/20230703233634/https://www.computerconservationsociety.org/resurrection/res102.htm#c| url-status = live}}</ref> At the park, he further developed his knowledge of electronics with the assistance of [[Royal Electrical and Mechanical Engineers|REME]] officer Donald Bayley. Together they undertook the design and construction of a portable [[secure voice]] communications machine codenamed ''[[Delilah (voice encryption)|Delilah]]''.<ref>{{Harvnb|Hodges|1983|p=273}}</ref> The machine was intended for different applications, but it lacked the capability for use with long-distance radio transmissions. In any case, Delilah was completed too late to be used during the war. Though the system worked fully, with Turing demonstrating it to officials by encrypting and decrypting a recording of a [[Winston Churchill]] speech, Delilah was not adopted for use.<ref>{{Harvnb|Hodges|1983|p=346}}</ref> Turing also consulted with Bell Labs on the development of [[SIGSALY]], a secure voice system that was used in the later years of the war.