Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Impeach George W. Bush -- Ignore unavailable to you. Want to Upgrade?

To: Will Lyons who wrote (70401)	9/26/2006 6:53:39 PM
From: TigerPaw	Respond to of 93284

The Japanese had more than one code. Their principal diplomatic code "purple" was broken in Sept 1939. cs.utexas.edu On December 3, 1941 a message was intercepted which instructed the Japanese embassy to destroy one of its two Purple machines. At first, it was suspected that perhaps Japan realized the encryption had been broken or was planning on changing its encryption. By December 6, the Magic decrypts indicated the only possible reason for this action was Japan intended to end diplomatic relations. Unfortunately, Magic decrypts only covered diplomatic messages. The Japanese Navy used its own set of then unbroken encryption methods. While knowing an attack was eminent, there was no way to know where or when this attack would be.