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Many thanks to Russell Schwager for giving Team 28005 permission to reproduce this applet!
For Keyboard input, you must click on the applet first
To encrypt a message using the enigma applet, push the keys on the keyboard. Clicking on the key will light up the encrypted letter on the display. The last 20 original letters and the encrypted letters are displayed to the right of the keyboard.
The applet allows for several parameters to be changed at any point in the operation of the machine. To change the setting of a rotor, click the up or down arrow to the right of each rotor. Pushing the up button will rotate the rotor once. Pushing the down arrow will push back the rotor once. To completely change the rotor, pick a rotor from the drop down box in the dark gray controls section at the bottom of the applet. To change the initial position of a rotor, select a position from the drop down box in the dark gray controls section at the bottom of the applet. To add a connection to the plug board, drag the mouse from one of the white circles in the plug board to another one. If the connection is made, a red line will appear between the two circles. Hitting the reset button on the controls section at the bottom of the applet will reset the state of machine to its default settings.
Here is an encoded message using the default settings:
WAC CZDZI YXNLQ CZL
Try and decode the message.
I have found that the applet sometimes behaves strangely under Microsoft Explorer running under Windows 95. I would recommend using Netscape 3.0 or higher to run this applet. This applet was developed using Microsoft J++ and was tested under Windows 95 and the MacOs.