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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク World War I cryptography ： ウィキペディア英語版 World War I cryptography Codes and ciphers were used extensively in World War I. The decoding by British Naval intelligence of the Zimmermann telegram helped bring the United States into the war. Trench codes were used by field armies of most of the combatants (Americans, British, French, German) in World War I. The most commonly used codes were simple substitution codes. More important messages generally used mathematical encryption for extra security, though. The use of these codes required the distribution of codebooks to military personnel, which proved to be a security liability since these books could be stolen by enemy forces. ==Britain== British decrypting was carried out in Room 40 by the Royal Navy and in MI1 by British Military (Army) Intelligence. * Zimmermann telegram * Arthur Zimmermann * MI1 British Military (Army) Intelligence * Room 40 Royal Navy (Britain) * Alastair Denniston Room 40 * James Alfred Ewing Room 40, first head * Nigel de Grey Room 40 * William R. Hall ‘Blinker’ Hall, Room 40, second head * Dilly Knox Room 40 * Oliver Strachey MI1 * William Montgomery (cryptographer) Room 40 * Playfair cipher 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「World War I cryptography」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.