Definition
Caesar's Cipher
The Caesar cipher is a substitution cipher that uses a symmetric key (a number or a letter) to shift each character of the plaintext by this number. It is a monoalphabetic cipher.
Examples
Example with a shifting number
Input: Baba bebt
Output: Hghg hkhz
Example with a shifting letter
Key: ‘N’
Input: NORAQRFFRA HZ NPUG ORV ZVE
Output: ABENDESSEN UM ACHT BEI MIR
Alphabet:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
NOPQRSTUVWXYZABCDEFGHIJKLM