monoalphabetic substitution

/mon"oh al'feuh bet"ik, mon'oh/, Cryptography.a system of substitution that uses only one cipher alphabet in a cryptogram so that each plaintext letter is always represented by the same cipher. Cf. polyalphabetic substitution.[193540; MONO + ALPHABETIC]
* * *
Universalium. 2010.
Look at other dictionaries:
monoalphabetic substitution —  ̷ ̷ ̷ ̷ at mono + noun Etymology: mon + alphabetic : substitution in cryptography that uses a single substitution alphabet so that each plaintext letter always has the same cipher equivalent compare polyalphabetic * * * /mon oh al feuh bet ik,… … Useful english dictionary
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
monoalphabetic — adjective Of a substitution cipher, using the same fixed mappings from plaintext to cipher letters across the entire text … Wiktionary
Polygraphic substitution — A polygraphic substitution is a cipher in which a uniform substitution is performed on blocks of letters. When the length of the block is specifically known, more precise terms are used: for instance, a cipher in which pairs of letters are… … Wikipedia
polyalphabetic substitution — /pol ee al feuh bet ik, pol ee /, Cryptography. a system of substitution that mixes together a number of cipher alphabets in a cryptogram so that each plaintext letter is represented by a cipher that repeatedly changes. Cf. monoalphabetic… … Universalium
polyalphabetic substitution — /pol ee al feuh bet ik, pol ee /, Cryptography. a system of substitution that mixes together a number of cipher alphabets in a cryptogram so that each plaintext letter is represented by a cipher that repeatedly changes. Cf. monoalphabetic… … Useful english dictionary
simple substitution — noun : monoalphabetic substitution … Useful english dictionary
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
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
cipher — cipherable, adj. cipherer, n. /suy feuhr/, n. 1. zero. 2. any of the Arabic numerals or figures. 3. Arabic numerical notation collectively. 4. something of no value or importance. 5. a person of no influence; nonentity. 6. a secret method of… … Universalium