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. 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.