You can see an example of the finished code here. For example, the phrase ‘Hello World’ would become ‘KHOOR ZRUOG’ using a shift of 3 (which it is the shift that Julius Caesar is thought to have used). It is one of the most simple ciphers there are and simply shifts each letter along a set number of places. The cipher we’ll be using is the Caesar cipher, named after the Roman emperor, Julius Caesar. In honor of this I decided a quick tutorial to build a cipher machine using the JavaScript skills that are covered in my book JavaScript Novice To Ninja. He also helped to break the notoriously difficult naval Enigma code used by the Nazi U-boats in World War II.

Turing occupies a special place in the hearts of computer nerds for effectively writing the blueprints for the computer.