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"superenciphered" - 1 õppematerjal

TheCodeBreakers
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TheCodeBreakers

Army. They denounced the naval disarmament treaties and began an almost frantic ship-building race. Nor did they neglect, as part of their war-making capital, their cryptographic assets. In 1934, their Navy purchased a commercial German cipher machine called the Enigma; that same year, the Foreign Office adopted it, and it evolved into the most secret Japanese system of cryptography. A variety of other cryptosystems supplemented it. The War, Navy, and Foreign ministries shared the superenciphered numerical HATO code for intercommunication. Each ministry also had its own hierarchy of codes. The Foreign Office, for example, employed four main systems, each for a specific level of security, as well as some additional miscellaneous ones. Meanwhile, the modern-style shoguns speared into defenseless China, sank the American gunboat Panay, raped Nanking, molested American hospitals and missions in China, and raged at American embargoes on oil and steel scrap

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