Definition:Substitution Cipher

Definition

A substitution cipher is a cipher in which each letter is encoded by substituting for it a different letter, or string of letters.

Also see

• Definition:Mono-Alphabetic Substitution Cipher
• Definition:Polyalphabetic Substitution Cipher

• Results about substitution ciphers can be found here.

Sources

• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): substitution cipher