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Known To Man Quote by David Kahn

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““This kind of work, particularly in the early stages of a difficult cryptanalysis, is perhaps the most excruciating, exasperating, agonizing mental process known to man.””

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Known To Man

More by David Kahn

“Hildegard von Bingen, an 11th-century nun who saw apocalyptic visions and was later canonized, had a cipher alphabet which she claimed came to her…

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“the most famous of all those who had an acquaintance with cryptology in the Middle Ages was an English customs official, amateur astronomer, and…

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“The task of the cryptanalysts consisted primarily of reconstructing the wiring and switches of the coding wheels—a task made more burdensome by the daily…

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“Analyzing the frequency and contacts of letters is the most universal, most basic of cryptanalytic procedures.”

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“General Joseph O. Mauborgne, who became Chief Signal Officer in October, 1937. Mauborgne had long been interested in cryptology. In 1914, as a young…

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“The only writer of the Middle Ages to describe cryptography instead of just using it was Roger Bacon, the English monk of startlingly modern…

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“Cryptology served magical purposes frequently throughout the Middle Ages, and even in the Renaissance was still disguising important parts of alchemical formulas.”

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“Ibn ad-Duraihim, according to Qalqashandi, gave seven systems of cipher:”

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“The technique was at least moderately well known, for Ibn Khaldūn wrote in The Muqaddimah: “Occasionally, skillful secretaries, though not the first to invent…

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“Cryptology was born among the Arabs. They were the first to discover and write down the methods of cryptanalysis. The people that exploded out…

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“Another steganographic system was still in use in the 20th century: Aeneas suggested pricking holes in a book or other document above or below…

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“Also of great importance in the discovery of linguistic phenomena that led to cryptanalysis was the development of lexicography.”

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