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A book cipher is a cipher in which each word or letter in the plaintext of a message is replaced by some code that locates it in another text, the key. A simple version of such a cipher would use a specific book as the key, and would replace each word of the plaintext by a number that gives the position where that word occurs in that book.
Print/export Download as PDF; ... The following 53 pages are in this category, out of 53 total. ... ADFGVX cipher; Affine cipher; Alberti cipher; The Alphabet Cipher ...
Copiale cipher: Solved in 2011 1843 "The Gold-Bug" cryptogram by Edgar Allan Poe: Solved (solution given within the short story) 1882 Debosnys cipher: Unsolved 1885 Beale ciphers: Partially solved (1 out of the 3 ciphertexts solved between 1845 and 1885) 1897 Dorabella Cipher: Unsolved 1903 "The Adventure of the Dancing Men" code by Arthur ...
The Cardan grille, in its original form, is of more literary than cryptographic interest. For example, controversy surrounds the Voynich manuscript which could be a 16th-century fake cipher text, possibly constructed with a Cardan grille which was used to generate pseudo-random nonsense from a pre-existing text. [2]
Sheshach (Hebrew: ששך), whose king is mentioned in the Hebrew Bible in Jeremiah 25:26, is supposed to be equivalent to Babel (), according to a secret mode of writing practiced among the Jews of unknown antiquity, which consisted in substituting the last letter of the Hebrew alphabet for the first, the next to last one for the second, and so on.
The Bible code (Hebrew: הצופן התנ"כי, hatzofen hatanachi), also known as the Torah code, is a purported set of encoded words within a Hebrew text of the Torah that, according to proponents, has predicted significant historical events.
Famous example of one time codes include: In the Bible, Jonathan prearranges a code with David, who is going into hiding from Jonathan's father, King Saul. If, during archery practice, Jonathan tells the servant retrieving arrows "the arrows are on this side of you," it's safe for David to return to court, if the command is "the arrows are ...
A well-known example of a substitution cipher is the Caesar cipher. To encrypt a message with the Caesar cipher, each letter of message is replaced by the letter three positions later in the alphabet. Hence, A is replaced by D, B by E, C by F, etc. Finally, X, Y and Z are replaced by A, B and C respectively.