Caesar Cipher Tool
Encrypt or decrypt text using the classic Caesar shift cipher.
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What is the Caesar Cipher?
The Caesar cipher is one of the simplest and most famous encryption techniques, reportedly used by Julius Caesar to protect messages of military significance. It is a type of substitution cipher in which each letter in the original text is replaced by a letter some fixed number of positions down the alphabet. For instance, with a shift of 3, A becomes D, B becomes E, and so on.
While historically interesting, it offers virtually zero security against modern cryptographic analysis because there are only 25 possible shifts, meaning an attacker can simply guess the shift via brute force in seconds.