cipher digraph

cipher digraph
диграф шифра

Англо-русский словарь по компьютерной безопасности. . 2011.

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  • Two-square cipher — The Two square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryption matrix used in the four square cipher while still being slightly stronger than the Playfair cipher …   Wikipedia

  • Four-square cipher — The Four square cipher is a manual symmetric encryption technique. It was invented by famous French cryptographer Felix Delastelle.The technique encrypts pairs of letters ( digraphs ), and thus falls into a category of ciphers known as… …   Wikipedia

  • 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

  • cryptology — cryptologist, n. cryptologic /krip tl oj ik/, cryptological, adj. /krip tol euh jee/, n. 1. cryptography. 2. the science and study of cryptanalysis and cryptography. [1635 45; < NL cryptologia. See CRYPTO , LOGY] * * * Introduction …   Universalium

  • Crossword — For other uses of crossword, see crossword (disambiguation) An American style crossword grid layout A crossword is a word puzzle that normally takes the form of a square or rectangular grid of white and shaded squares. The goal is to fill the… …   Wikipedia

  • American and British English spelling differences — Spelling differences redirects here. For other uses, see Category:Language comparison. For guidelines on dialects and spelling in the English language version of Wikipedia, see Wikipedia:Manual of Style#National varieties of English. Differences… …   Wikipedia

  • Cryptanalysis — Close up of the rotors in a Fialka cipher machine Cryptanalysis (from the Greek kryptós, hidden , and analýein, to loosen or to untie ) is the study of methods for obtaining the meaning of encrypted information, without access to the secret… …   Wikipedia

  • Smithy code — This article refers to a cipher used in 2006 by Mr Justice Peter Smith and inserted into his judgment in the litigation concerning alleged plagiarism by Dan Brown. For the prisoner code invented by Capt. Smitty Harris in 1965, see Tap Code. The… …   Wikipedia

  • Letter — (Roget s Thesaurus) < N PARAG:Letter >N GRP: N 1 Sgm: N 1 letter letter Sgm: N 1 character character Sgm: N 1 hieroglyphic hieroglyphic &c.(writing) 590 Sgm: N 1 type type &c.(printing) 591 Sgm: N 1 capitals capitals …   English dictionary for students

  • Musical cryptogram — The BACH motif. A musical cryptogram is a cryptogrammatic sequence of musical notes, a sequence which can be taken to refer to an extra musical text by some logical relationship, usually between note names and letters. The most common and best… …   Wikipedia


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