US AIR FORCE / SCIENCE PHOTO LIBRARY US AIR FORCE / SCIENCE PHOTO LIBRARY
Enigma machine. This is an electromechanical German encryption machine. Messages were typed into the keyboard and a series of letters would light up on the machine's display, providing the encrypted version (the ciphertext). A system of rotors meant that each letter could be enciphered as any other, except itself. This Enigma machine, Serial No. 01182, was used by the German Luftwaffe during World War II. It is the standard 3-rotor model; the Navy had a more powerful 4-rotor version for communication with U-boats. Photographed at the Air Force Academy Department of Computer Science, Colorado, USA.
Model release not required. Property release not required.