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.
[1935-40; MONO- + ALPHABETIC]

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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

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