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Re: Civil War Crypto Question... (fwd)
At 09:21 AM 12/22/1997 -0600, Jim Choate wrote:
>> My impression from this and from the chapter summary is that the disk was
>> used for flag codes but not telegraphy. For telegraphy the Union apparently
>> used a word-based route transposition that Friedman found unimpressive.
...
>Friedman? Who the hell is Friedman? None of my references has anyone by that
>named listed, let alone involved.
Friedman was the WWII / Korean War cryptographer who wrote some of the
main surveys of crypto at the time. In particular, he wrote a 4-volume set
of books, some of which were declassified, and some which became declassified
after a lawsuit by John Gilmore.
Thanks!
Bill
Bill Stewart, [email protected]
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