Created by Joseph Desch, an employee with the National Cash Register Company, these Bombes "worked primarily against the German Navy's four-rotor Enigmas. Without the proper settings, the encrypted messages were virtually unbreakable. The Bombes took only 20 minutes to complete a run, testing each of the 456,976 possible rotor settings within one wheel order. Different Bombes tried different wheel orders, and one of them would have had the final correct settings. When the various U-boat settings were found for the day, the Bombe could be switched over to work on the German Army and Air Force three-rotor messages."
Click here to read the related story on the National Cryptologic Museum, and click here to check out the entire Road Trip 2010 package.
August 6, 2010 4:00 AM PDT
Photo by: Daniel Terdiman/CNET
| Caption by: Daniel Terdiman
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