1997-12-22 - Re: Civil War Crypto Question… (fwd)

Header Data

From: bill.stewart@pobox.com
To: Jim Choate <cypherpunks@ssz.com (Cypherpunks Distributed Remailer)
Message Hash: 55fb58c77f3568577cfa4c10fe1550e76e6fbd322be027060653f06574f9073f
Message ID: <>
Reply To: <199712221521.JAA17610@einstein.ssz.com>
UTC Datetime: 1997-12-22 18:16:21 UTC
Raw Date: Tue, 23 Dec 1997 02:16:21 +0800

Raw message

From: bill.stewart@pobox.com
Date: Tue, 23 Dec 1997 02:16:21 +0800
To: Jim Choate <cypherpunks@ssz.com (Cypherpunks Distributed Remailer)
Subject: Re: Civil War Crypto Question... (fwd)
In-Reply-To: <199712221521.JAA17610@einstein.ssz.com>
Message-ID: <>
MIME-Version: 1.0
Content-Type: text/plain

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.
Bill Stewart, bill.stewart@pobox.com
PGP Fingerprint D454 E202 CBC8 40BF  3C85 B884 0ABE 4639