| 11. | The embassy was then to destroy their cipher machines.
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| 12. | In December 1932, the Polish Cipher Bureau tasked Marian Rejewski with breaking the Enigma cipher machine.
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| 13. | Reverse : A stylised labyrinth of connections referring to the operation of the Enigma cipher machine.
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| 14. | From 1943 the Americans and the British agreed upon a Combined Cipher Machine ( CCM ).
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| 15. | Leibniz also devised a ( now reproduced ) cipher machine, recovered by Nicholas Rescher in 2010.
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| 16. | She worked on developing an early cipher machine.
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| 17. | Friedman described to Rowlett a concrete design for a teleprinter cipher machine that he had invented.
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| 18. | Other cipher machines which used pinwheels include the C-52, the CD-57 and the Siemens and Halske T52.
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| 19. | "' JADE "'was the codename given by US codebreakers to a Japanese World War II cipher machine.
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| 20. | In the history of cryptography, the "'Enigma machine "'was a portable cipher machine used to More . ..
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