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Art Quote by David Kahn

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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 speculations. In his Epistle on the Secret Works of Art and the Nullity of Magic, written about the middle of the 1200s,””

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“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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“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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“The world owes its first instructional text on communications security to the Greeks. It appeared as an entire chapter in one of the earliest…

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