Enigma

The Enigma was an encryption machine famously used by the German military during World War 2. The power of the Enigma came from being simple for the operator to use but difficult to determine the encrypted letter for any input letter. The number of possible ways to jumble a message through an Enigma was nearly 159 quintillion. Thanks to incredible mathematicians in Poland and tenacious work by the British at Bletchley Park, the Allies broke the Enigma code. This gave the Allies the ability to read top secret communications during the war and greatly disrupt the Nazi German war machine.

Usage

The enigma machine shown below has an entry element and a reflector. You can add rotors with the + button and change the rotor settings by clicking on the up and down arrows or clicking on the letter in the middle of the rotor. To change the wiring of a rotor, select the roman numerals below the rotor.

To encrypt or decrypt a message, type into the input space at the bottom of the page.