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 165
The Enigma Andrew Hodges. process ' or Turing machine , involving not just the rules for adding or substituting , but rules for how to find , apply and communicate the method of encipherment itself . Good cryptography lay in the creation ...
The Enigma Andrew Hodges. process ' or Turing machine , involving not just the rules for adding or substituting , but rules for how to find , apply and communicate the method of encipherment itself . Good cryptography lay in the creation ...
Page 168
... machine , were irrelevant . What mattered was the logical description – just like a Turing machine . Everything relevant to the Enigma was contained in its ' table ' , a list of its states and what it would do in each state . And from a ...
... machine , were irrelevant . What mattered was the logical description – just like a Turing machine . Everything relevant to the Enigma was contained in its ' table ' , a list of its states and what it would do in each state . And from a ...
Page 170
... Enigma . But it enormously increased the sheer number of states of the Enigma machine . There would be 1,305,093,289,500 ways of connect- ing seven pairs of letters on the plugboard , for each of the 6 x 17576 rotor states . Presumably ...
... Enigma . But it enormously increased the sheer number of states of the Enigma machine . There would be 1,305,093,289,500 ways of connect- ing seven pairs of letters on the plugboard , for each of the 6 x 17576 rotor states . Presumably ...
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Common terms and phrases
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