bigram cipher


bigram cipher
биграммный шифр

English-Russian cryptological dictionary . 2014.

Смотреть что такое "bigram cipher" в других словарях:

  • Playfair cipher — The Playfair cipher or Playfair square is a manual symmetric encryption technique and was the first literal digraph substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair who promoted the… …   Wikipedia

  • Autokey cipher — An autokey cipher (also known as the autoclave cipher) is a cipher which incorporates the message (the plaintext) into the key. There are two forms of autokey cipher: key autokey and text autokey ciphers. A key autokey cipher uses previous… …   Wikipedia

  • биграммный шифр — — [http://www.rfcmd.ru/glossword/1.8/index.php?a=index d=23] Тематики защита информации EN bigram cipher …   Справочник технического переводчика

  • 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

  • Frequency analysis — In cryptanalysis, frequency analysis is the study of the frequency of letters or groups of letters in a ciphertext. The method is used as an aid to breaking classical ciphers.this is wrong is based on the fact that, in any given stretch of… …   Wikipedia

  • Reservehandverfahren — de. Reservehandverfahren (RHV) ( en. Reserve Hand Procedure) was a German Naval World War II hand cipher system used as a backup method when no working Enigma machine was available. [ [http://www.codesandciphers.org.uk/documents/egenproc/page03.ht… …   Wikipedia

  • Rotor machine — In cryptography, a rotor machine is an electro mechanical device used for encrypting and decrypting secret messages. Rotor machines were the cryptographic state of the art for a brief but prominent period of history; they were in widespread use… …   Wikipedia

  • Letter frequency — The frequency of letters in text has often been studied for use in cryptography, and frequency analysis in particular. No exact letter frequency distribution underlies a given language, since all writers write slightly differently. Linotype… …   Wikipedia


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