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Purple (cipher machine)
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Purple (cipher machine) : ウィキペディア英語版
Purple (cipher machine)
: ''This article is about a World War II era cipher used by the Japanese Foreign Office for diplomatic communications. For World War II era ciphers used by the Japanese military, see Japanese naval codes.''
In the history of cryptography, or , codenamed Purple by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office just before and during World War II. The machine was an electromechanical stepping-switch device.
The information gained from decryptions was eventually code-named ''Magic'' within the US government.
The codename "Purple" referred to binders used by US cryptanalysts for material produced by various systems; it replaced the Red machine used by the Japanese Foreign Office. The Japanese also used Coral and JADE stepping-switch systems.
==Development of Japanese cipher machines==


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