Browse Items (14 total)

The Confederate Cipher Disk was used in The American Civil War by the Confederate Army. Created by Francis LaBarre and based on the Vigenère Cipher, it consisted of two brass discs with the alphabet on each. As a mechanical cipher tool, it allowed…

The Enigma was an electromechanical cipher machine used by Germany in WWII. It came in the form of a typewriter and was adopted by the German Army, Air Force, and Navy to secure communications.

In 1939, Alan Turing broke the cipher and developed…

The M-209 was a cipher machine invented by Boris Hagelin or AB Cryptoteknik at the beginning of WWII. As a pin-and-lug cipher machine, it did not require electricity. During the war, German cryptanalysts called the machine "AM-1" for "American…

The Culper Code Book was used during The American Revolutionary War in 1778 by George Washington's Culper Spy Ring. Developed by Ben Tallmadge, it consisted of 763 numerical codes to represent various words, names, and locations. This code book was…