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The “Secrets, Lies and Teletypes” code-breaking exhibit opened to the public March 23.

The new exhibit explores the development of cryptology and code breaking from ancient times to the present, focusing on the role of machines and computers.

The exhibit highlights the German Air Force Enigma machine on loan from the National Cryptologic Museum, part of the National Security Agency. The three-rotor Enigma was used to facilitate secure messaging during World War II for the Nazi war effort.

In addition, the National Security Agency has loaned the Museum an M-209, a U. S. Army Signal Corps machine used by American troops to send and receive encrypted messages.

The exhibit explores the history of secret communications, including semaphores, punch-card equipment, Teletypes, and other machines that played roles in cracking codes and conveying encrypted messages, as well as the famed Navajo code-talkers who stymied Japanese efforts to crack U.S. communications in the Pacific Theatre during World War II.

The Enigma cipher machine from WWII, courtesy of the National
Security Agency.

2006 San Diego Computer Museum
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