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La emboscada al portahidros Nisshin. IIGM
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<blockquote data-quote="federicobarbarroja" data-source="post: 256397"><p>en esta pagina se explica muy bien el funcionamiento del codigo purpura y hay un simulador para bajar:</p><p></p><p><a href="http://frode.home.cern.ch/frode/crypto/simula/purple/index.html">http://frode.home.cern.ch/frode/crypto/simula/purple/index.html</a></p><p></p><p>The Japanese Navy did not cooperate with the Army in cipher machine development, continuing to the war. The Navy believed the PURPLE machine was sufficiently difficult to break that it did not attempt to revise it to improve security. This seems to have been on the advice of a mathematician, Teiji Takagi (高木 貞治) who didn't know cryptanalysis.The Ministry of Foreign Affairs was supplied RED and PURPLE by the Navy. No one noticed weak points in both machines.</p><p></p><p><strong>Just before the end of the war, the Army warned the Navy of a weak point of PURPLE, but the Navy failed to act on this advice</strong></p></blockquote><p></p>
[QUOTE="federicobarbarroja, post: 256397"] en esta pagina se explica muy bien el funcionamiento del codigo purpura y hay un simulador para bajar: [url]http://frode.home.cern.ch/frode/crypto/simula/purple/index.html[/url] The Japanese Navy did not cooperate with the Army in cipher machine development, continuing to the war. The Navy believed the PURPLE machine was sufficiently difficult to break that it did not attempt to revise it to improve security. This seems to have been on the advice of a mathematician, Teiji Takagi (高木 貞治) who didn't know cryptanalysis.The Ministry of Foreign Affairs was supplied RED and PURPLE by the Navy. No one noticed weak points in both machines. [B]Just before the end of the war, the Army warned the Navy of a weak point of PURPLE, but the Navy failed to act on this advice[/B] [/QUOTE]
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