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词汇 Black Chamber
分类 英语词汇 英语翻译词典
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Black Chamber

英语百科

Black Chamber

Black Chamber cryptanalytic work sheet for solving Japanese diplomatic cipher, 1919
Eingang zum ehemaligen Sitz der Black Chamber

The Black Chamber, also known as The Cipher Bureau, was the United States' first peacetime cryptanalytic organization, and a forerunner of the National Security Agency. The only prior codes and cypher organizations maintained by the US government had been some intermittent, and always abandoned, attempts by Armed Forces branches prior to World War I.

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