Archived posting to the Leica Users Group, 2004/11/12

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Subject: [Leica] Japan's JN-25 naval code
From: Thinkofcole at aol.com (Thinkofcole@aol.com)
Date: Fri Nov 12 08:45:43 2004
 
Marc, while William Friedman's contributions to deciphering enemy  codes are 
enormous, the Japanese naval code JN-25 was broken by a secret U.S.  Navy 
team 
working at Pearl Harbor before WWII and afterward under a  Commodore John 
Rochefort. -- bob cole
Replies: Reply from msmall at infionline.net (Marc James Small <) ([Leica] Japan's JN-25 naval code)