A top secret science projectThe Caesar cipher, named after Roman Emperor Julius Caesar is one of the earliest and most widely known ciphers. It is a simple form of a “substitution cipher ...

The value is the cipher key. For example, the code IBDLBEBZ is encrypted with a Caesar Cipher. It doesn’t take very much to see that a shift of “1” would reveal HACKADAY.

If you have to write down a password, or some other sensitive information, you can use a Caesar Cipher to quickly encode and decode that message on your own.