substitution cipher
noun Date: 1936 a cipher in which the letters of the plaintext are systematically replaced by substitute letters — compare transposition cipher

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • 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

  • substitution cipher — Cryptography. a cipher that replaces letters of the plain text with another set of letters or symbols. Cf. transposition cipher. [1935 40] * * * …   Universalium

  • substitution cipher — Cryptography. a cipher that replaces letters of the plain text with another set of letters or symbols. Cf. transposition cipher. [1935 40] …   Useful english dictionary

  • substitution cipher — noun a method of encryption by which units of plaintext are substituted with ciphertext according to a regular system; the units may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.… …   Wiktionary

  • Substitution box — In cryptography, a substitution box (or S box) is a basic component of symmetric key algorithms. In block ciphers, they are typically used to obscure the relationship between the plaintext and the ciphertext mdash; Shannon s property of confusion …   Wikipedia

  • Substitution — For Wikipedia Template Substitution, see Substitution is the replacement of one thing with another. In mathematics: * Substitution rule, in calculus * Variable substitution, in first order logic * The substitution method of solving simultaneous… …   Wikipedia

  • cipher disk — noun or cipher wheel : a device for enciphering and deciphering in substitution cipher consisting of two movable concentric disks with the letters of the alphabet written around the margin of each …   Useful english dictionary

  • substitution code — noun A substitution cipher …   Wiktionary

  • Cipher (disambiguation) — Cipher can refer to: An algorithm for performing encryption, including: substitution ciphers permutation ciphers An English name for the number 0 Cipher, an evil Pokémon syndicate, Cipher (marvel), a Marvel Comics X Men character. Cipher… …   Wikipedia

  • Cipher — For other uses, see Cipher (disambiguation). Edward Larsson s rune cipher resembling that found on the Kensington Runestone. Also includes runically unrelated blackletter writing style and pigpen cipher. In cryptography, a cipher (or cypher) is… …   Wikipedia

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