enciphered message

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• 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. This yielded military intelligence which, along with that from… …   Wikipedia

• Substitution cipher — In cryptography, a substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system; the units may be single letters (the most common), pairs of letters, triplets of letters,… …   Wikipedia

• Colossus computer — Colossus MkI/MkII A Colossus Mark 2 computer. The operator on the left is Dorothy Duboisson. The slanted control panel on the left was used to set the pin patterns on the Lorenz. The bedstead paper tape transport is on the right. Developer Tommy… …   Wikipedia

• Man-in-the-middle attack — Not to be confused with Meet in the middle attack. In cryptography, the man in the middle attack (often abbreviated MITM), bucket brigade attack, or sometimes Janus attack, is a form of active eavesdropping in which the attacker makes independent …   Wikipedia

• Biuro Szyfrów — The Biuro Szyfrów ([ˈbʲurɔ ˈʂɨfruf] ( listen), Polish for Cipher Bureau ) was the interwar Polish General Staff s agency charged with both cryptography (the use of ciphers and codes) and cryptology (the study of ciphers and codes,… …   Wikipedia

• Tableau de Concordance — The Tableau de Concordance was the main French diplomatic code used during World War I; the term also refers to any message sent using the code. It was a superenciphered four digit code that was changed three times between 1 August 1914 and 15… …   Wikipedia

• Georges Painvin — Infobox Person name = Georges Painvin image size = 200px caption = Georges Painvin in 1914 birth date = 1886 birth place = Nantes death date = 1980 death place = Paris occupation = Cryptographer spouse = parents = children =Georges Jean Painvin… …   Wikipedia

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• The National Museum of Computing — Coordinates: 51°59′55″N 0°44′37″W / 51.9985°N 0.7435°W / 51.9985; 0.7435 …   Wikipedia

• Banburismus — was a process invented by Alan Turing at Bletchley Park in England during the Second World War. It was used by Hut 8 at Bletchley Park to break German Kriegsmarine (i.e., Naval) Enigma. It was a codebreaking procedure which used an early form of… …   Wikipedia

• Japanese cryptology from the 1500s to Meiji — The cipher system that Uesugi used is basically a simple substitution usually known as a Polybius square or “checkerboard.” The i ro ha alphabet contains forty eight letters, so a seven by seven square is used, with one of the cells left blank.… …   Wikipedia