[5997] in cryptography@c2.net mail archive
yet another example of a secret signature
daemon@ATHENA.MIT.EDU (Dan Geer)
Mon Nov 1 14:17:33 1999
Date: Sun, 31 Oct 1999 14:07:20 -0500 (EST)
From: Dan Geer <geer@world.std.com>
Message-Id: <199910311907.OAA13493@world.std.com>
To: cryptography@c2.net
Always collecting examples of "secret signatures"
that predate all the stuff we do, I offer this for
your amusement/pleasure.
--dan
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"Marion Dorset," Progressive Farmer, November 1999, p31.
His solution to hog cholera saved producers millions
...
Besides contributing to the hog cholera vaccine, Dorset also
invented the purple ink stamp that identifies USDA-inspected
meat -- an ink that's used to this day. USDA won't reveal
what's in Dorset's formula. It is kept secret to avoid
replication of the stamp.
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