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Der Fall WICHER; German Knowledge of Polish Success on ENIGMA (ebook)

National Security Agency

Published by National Security Agency
New Condition: EBook No Binding
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013318-Der Fall WICHER; German Knowledge of Polish Success on ENIGMA (ebook) 27 Pages THIS ITEM IS SOLD AS A DIGITAL DOWNLOAD ONLY. AFTER PURCHASE YOU WILL BE FURNISHED A LINK FOR DOWNLOAD BY EMAIL.In 1939 the Germans found evidence, including decrypts, that a Polish cryptanalytic organization, WICHER, had been reading the ENIGMA. Documents and interrogations did not reveal how the machine could have been read, and after some changes in the indicator system and plugging, the matter was dropped. In 1943, further evidence of prewar Polish success, and the strong appearance that Navy ENIGMA was being read by the British and US., caused a crypto security crisis. A spy in the U.S. Navy Department reported the reading of V-boat keys. ENIGMA security was studied and many changes in the machine and its usage were undertaken. By 1944 the Germans acted and spoke as if they knew ENIGMA traffic was being read by the Allies, but they suspected betrayal or compromise of keys. THIS ITEM IS SOLD AS A DIGITAL DOWNLOAD ONLY. AFTER PURCHASE YOU WILL BE FURNISHED A LINK FOR DOWNLOAD BY EMAIL. 0. Bookseller Inventory # 013318

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Title: Der Fall WICHER; German Knowledge of Polish ...

Publisher: National Security Agency

Binding: EBook-Download Only

Book Condition:EBook

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