Caesar cipher
Noun
Meaning
Caesar cipher (plural Caesar ciphers)
A simple form of encryption in which each letter in the plaintext is shifted through the alphabet a number of positions (for example A→D, B→E, C→F, etc.).
Synonym: Julius Caesar cipher
Examples
Click here for more information. main The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet.
The Vigenère cipher uses a Caesar cipher with a different shift at each position in the text; the value of the shift is defined using a repeating keyword.