This example is with a shift of three, so that a B in the p … Wikipedia Transposition cipher - In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext… … WikipediaĬaesar cipher - The action of a Caesar cipher is to replace each plaintext letter with one fixed number of places down the alphabet. state of Michigan see M 209 (Michigan highway) In cryptography, the M 209, designated CSP 1500 by the Navy (C 38 by the manufacturer) is a portable, mechanical cipher machine used by the US military… … Wikipedia M-209 - can also refer to a highway in the U.S. It is a simple form of polyalphabetic substitution.The Vigenère (pronEng|ˌviːdʒɪˈnɛəɹ, veedj ih nair )… … Wikipedia
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Vigenère cipher - The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword.
the science and study of cryptanalysis and cryptography. cryptologic /krip tl oj ik/, cryptological, adj. First invented by Thomas Jefferson in 1795, it did not become well known and was… … WikipediaĬryptology - cryptologist, n. Jefferson disk - The Jefferson disk, or wheel cypher as Jefferson named it, is a cipher system using 26 wheels, each with the letters of the alphabet arranged randomly around them. This yielded military intelligence which, along with that from… … Wikipedia Cryptanalysis of the Enigma - enabled the western Allies in World War II to read substantial amounts of secret Morse coded radio communications of the Axis powers that had been enciphered using Enigma machines.
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