digraph(ic) substitution

digraph(ic) substitution
подстановка с одновременной обработкой двух знаков (диграфов)

Англо-русский словарь по компьютерной безопасности. . 2011.

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  • 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

  • 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

  • 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

  • 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

  • Typographic ligature — long s i ligature type, size 12pt Garamond. In writing and typography, a ligature occurs where two or more graphemes are joined as a single glyph. Ligatures usually replace consecutive characters sharing common components and are part of a more… …   Wikipedia

  • Pronunciation of English th — In English, the digraph 〈th〉 represents in most cases one of two different phonemes: the voiced dental fricative IPA|/ð/ (as in this ) and the voiceless dental fricative IPA|/θ/ ( thing ). More rarely, it can stand for IPA|/t/ ( Thailand ) or the …   Wikipedia

  • Hard and soft C — A hard c vs. a soft c is a feature that occurs in many languages, including English, in which two distinct major sounds (phonemes) are represented by the Latin letter c . A hard c is pronounced as the voiceless plosive IPA| [k] (like in car );… …   Wikipedia

  • Indian English — is an umbrella term used to describe dialects of the English language spoken primarily in the Republic of India. As a result of British colonial rule until Indian independence in 1947, English remains an official language of India and continues… …   Wikipedia

  • ß — The letter ß (Unicode U+00DF) is a letter in the German alphabet. Its German name is Eszett (IPA2|ɛsˈtsɛt, lexicalized expression for sz) or scharfes S (sharp S), and is pronounced as an unvoiced s (IPA2|s). Origin in Blackletter as ligature of… …   Wikipedia

  • Diacritic — For the academic journal, see Diacritics (journal). The letter a with acute Diacritical marks …   Wikipedia

  • 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


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