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Despite the Vigenère cipher's apparent strength, it never became widely used throughout Europe. The Gronsfeld cipher is a variant attributed by Gaspar Schott to Count Gronsfeld (Josse Maximilaan van Gronsveld né van Bronckhorst) but was actually used much earlier by an ambassador of Duke of Mantua in 1560s-1570s. It is identical to the ...
From article " 'Da Vinci' judgement code puzzles lawyers": . The New York Times reported that Smith sent an e-mail to a reporter at the newspaper that offered a hint. It said the code referred to his entry in this year's edition of Britain's "Who's Who," which has references to his wife Diane, his three children Frazier, Parker, and Bailey, British naval officer Jackie Fisher, and the Titanic ...
It is very similar to the Vigenère cipher, making many scholars call Bellaso its inventor, although unlike the modern Vigenère cipher Bellaso didn't use 26 different "shifts" (different Caesar's ciphers) for every letter, instead opting for 13 shifts for pairs of letters. The system is still periodic although the use of one or more long ...
"The Alphabet Cipher" was a brief study published by Lewis Carroll in 1868, describing how to use the alphabet to send encrypted codes. [1] It was one of four ciphers he invented between 1858 and 1868, and one of two polyalphabetic ciphers he devised during that period and used to write letters to his friends.
CRYPTOGRAPHY PUZZLES Celebrity Cipher "We need storytelling. Otherwise life just goes on and on, like the number pi." − Taiwanese filmmaker Ang Lee (Distributed by Andrews McMeel)
In cryptanalysis, Kasiski examination (also known as Kasiski's test or Kasiski's method) is a method of attacking polyalphabetic substitution ciphers, such as the Vigenère cipher. [1] [2] It was first published by Friedrich Kasiski in 1863, [3] but seems to have been independently discovered by Charles Babbage as early as 1846. [4] [5]
A German mathematician and cryptanalyst who tested a number of German cipher machines and found them to be breakable. Wilhelm Fenner German, Chief Cryptologist and Director of Cipher Department of the High Command of the Wehrmacht. Walther Fricke German, Worked alongside Dr Erich Hüttenhain at Cipher Department of the High Command of the ...
On Vigenère's trips to Italy he read books about cryptography and came in contact with cryptologists. Giovan Battista Bellaso described a method of encryption in his 1553 book La cifra del. Sig. Giovan Battista Belaso, published in Venice in 1553, [16] which in the 19th century was misattributed to Vigenère and became widely known as the "Vigenère cipher". [17]