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Kryptos is a sculpture by Jim Sanborn at the CIA headquarters that contains four coded messages, three of which have been solved. The fourth message is one of the most famous unsolved codes in the world and has four clues provided by the artist.
The Enigma machine is a cipher device used by Nazi Germany and other countries to protect secret messages. Learn how it works, how Poland broke it, and how the Allies exploited it for intelligence.
A Caesar cipher is a simple encryption technique that shifts each letter in the plaintext by a fixed number of positions in the alphabet. Learn about its history, usage, examples, and variations, such as the Vigenère cipher and the ROT13 algorithm.
Learn how the Allies broke the Enigma cipher machine used by the Axis powers in World War II, using mathematical and technological methods. Explore the history, structure, and principles of the Enigma cipher system and its decryption techniques.
Learn how cryptography was used extensively during World War II and how the Allies decrypted the German Enigma and Lorenz ciphers. Explore the code and cipher systems, the codebreakers, and the intelligence sources of different nations involved in the war.
A copy of the code book was obtained in a "black bag" operation on the luggage of a Japanese naval attaché in 1923; after three years of work Agnes Driscoll was able to break the additive portion of the code. [2] [3] [4] Knowledge of the Red Book code helped crack the similarly constructed Blue Book code. [1]
Code talkers were military personnel who used their Indigenous languages to transmit secret messages during World War II. Learn about the history, languages, and achievements of the code talkers, including the Navajo, Comanche, Cherokee, and Choctaw.
The FBI is seeking help to decipher the coded messages found in the pockets of a murder victim in Missouri in 1999. The notes may reveal the killer and the victim's whereabouts, but the code remains unknown and the case unsolved.