lan Turing papers on code breaking released by GCHQ

19 April 2012

Alan Turing papers on code breaking released by GCHQ
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By Chris Vallance BBC News

Two 70-year-old papers by Alan Turing on the theory of code breaking have
been released by the government's communications headquarters, GCHQ.

It is believed Turing wrote the papers while at Bletchley Park working on
breaking German Enigma codes.

A GCHQ mathematician said the fact that the contents had been restricted
"shows what a tremendous importance it has in the foundations of our
subject".

It comes amid celebrations to mark the centenary of Turing's birth.

The two papers are now available to view at the National Archives at Kew,
west London.

GCHQ was able to approximately date the papers because in one example
Turing had made reference to Hitler's age..../snip/


http://www.bbc.co.uk/news/technology-17771962

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