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Caesar Cipher

Let's Look at "The Caesar Cipher."


The earliest known, and the simplest, use of a substitution cipher was by Julius
Caesar. The Caesar cipher involves replacing each letter of the alphabet with the letter standing a number of places further down the alphabet.


I implemented in JAVA with a custom shift number(which a user gives as input) to encrypt and decrypt. And my Key consists of Alpha(Capital and simple, one after other)-numeric. But not for the special characters.

I divided it into two files. That CSKey.java(Caesar Cipher Key) and CaesarCipher.java which contains the main method.
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