The previously unknown cache contains many sheets in Turing’s own handwriting, telling of his top-secret “Delilah” engineering project from 1943 to 1945. Delilah was Turing’s portable voice-encryption system, named after the biblical deceiver of men.
It is amazing how Alan Turing contributed so much to the modern digital life and how so many years latter we still find documents that expand the work produced by Touring. As he worked for the secret services how many more things will one never know about his achievements?
in https://spectrum.ieee.org/alan-turings-delilah?ref=sixhat.net