Purple

In the history of cryptography, 97-shiki-obun In-ji-ki (九七式欧文印字機) ("System 97 Printing Machine for European Characters") or Angooki Taipu B (暗号機B型) ("Type B Cipher Machine"), codenamed PURPLE by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office during, and just before, World War II. The machine was an electromechanical stepping-switch device.

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The codename of PURPLE referred to binders used by US cryptanalysts for material produced by various systems; there had been a RED machine used by the Japanese Foreign Office, and purple was the next available color. The Japanese also used CORAL and JADE stepping-switch systems. The PURPLE machine was a successor to, and improvement on, both the RED machine and what the Americans called the "M machine" (used in some embassies and consulates by attach?s). All were designed by Japanese Navy Captain Risaburo Ito. The information gained from decryptions was eventually code-named Magic within the US government.

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History of cryptography: The history of cryptography dates back thousands of years, and for the most part, it has been the history of classical cryptography; that is, methods of encryption which can be performed using pen and paper (or perhaps with simple mechanical aids). In the early 1900s, the invention of several comple...

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United States: :For other uses, see US (disambiguation), USA (disambiguation), and United States (disambiguation)....

Purple related Images and Photos (experimental)

Purple	Purple 2	Purple Joy	Purple Rain
Purple Robe	Purple Trio	Purple Gang, The	Purple Lips
Purple Rain	Purple Noon	Purple Rain (BD)	Purple Rain (DVD)