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"wesemann" - 1 õppematerjal

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TheCodeBreakers

Among them was the Allied Merchant Ships' Code, a two-part code issued by the Admiralty for messages via the Broadcasting for Allied Merchant Ships, or BAMS, commonly called the "BAMS code." Also recovered were several superencipherment tables, though not the current ones. Atlantis, however, had aboard in her special crew a wireless operator named Wesemann who had served for three years in one of the German cryptanalytic services. Wesemann achieved what might be the first nautical cryptanalysis on record when, on the basis of the captured code and several merchant messages that he had intercepted, he succeeded in reconstructing about one third of the superencipherment table then in use. As a result, Atlantis could read much of the Allied merchantmen's traffic and could await her victims at likely...

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