Alan Turing: The EnigmaA gripping story of mathematics, science, computing, war history, cryptography, and homosexual persecution and liberation. Hodges tells how Turing's revolutionary idea of 1936-- the concept of a universal machine-- laid the foundation for the modern computer. Turing brought the idea to practical realization in 1945 with his electronic design. This work was directly related to Turing's leading role in breaking the German Enigma ciphers during World War II, a scientific triumph that was critical to Allied victory in the Atlantic. Despite his wartime service, Turing was eventually arrested, stripped of his security clearance, and forced to undergo a humiliating treatment program-- all for trying to live honestly in a society that defined homosexuality as a crime. This New York Times bestselling biography of the founder of computer science and artificial intelligence is the definitive account of an extraordinary mind and life. --Excerpted from 2014 version, published by Princeton University Press. |
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Page 162
... cipher clerk would then be to take this ' plain - text ' , say 6728 5630 8923 , 9620 6745 2397 , 5348 1375 0210 and to take the ' key ' , say and form the cipher - text by modular addition . For this to be of any use , however , the ...
... cipher clerk would then be to take this ' plain - text ' , say 6728 5630 8923 , 9620 6745 2397 , 5348 1375 0210 and to take the ' key ' , say and form the cipher - text by modular addition . For this to be of any use , however , the ...
Page 165
... cipher clerks performed , through an analysis of the entire mass of signals . Maybe the Merchant Navy cipher system was not the last word in baffling complexity , but for operational use in ordinary ships , it was near the limit of ...
... cipher clerks performed , through an analysis of the entire mass of signals . Maybe the Merchant Navy cipher system was not the last word in baffling complexity , but for operational use in ordinary ships , it was near the limit of ...
Page 168
... cipher clerk , and the physical construction of the machine , were irrelevant . What mattered was the logical ... cipher EDGBAHCF For the machine in the state shown in the second diagram , it would be : plain ABCDEF GH cipher EF GHAB CD ...
... cipher clerk , and the physical construction of the machine , were irrelevant . What mattered was the logical ... cipher EDGBAHCF For the machine in the state shown in the second diagram , it would be : plain ABCDEF GH cipher EF GHAB CD ...
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Alan Turing Alan Turing's Alan wrote Alan's American AMT's arithmetic Bletchley Bletchley Park Bombe boys brain Britain British calculation called Cambridge cathode ray tube chess Christopher cipher Computable Numbers cryptanalytic Darwin delay line Delilah differential analyser digits discussion Don Bayley Donald Michie EDVAC electronic enciphered engineering ENIAC Enigma machine explained fact G.H. Hardy German Hanslope Hilbert homosexual human idea instructions intelligence interest kind King's knew letter logical Manchester mathematician mathematics Max Newman mechanical messages method mind Morcom naval Enigma Neumann never Newman operations organisation paper perhaps Peter Hilton physical play plugboard position possible Princeton principle problem question Robin Gandy rotor scientific secret Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing