spread spectrum radio communications
bill payne
billp at nmol.com
Sun Mar 29 18:38:15 PST 1998
Sunday 3/29/98 6:59 PM
John Gilmore
John Young
J Orlin Grabbe
Waiting for Patty to check out at the Albertsons today
I looked at Scientific American, April 1998.
Scientific American has GREAT ARTICLE on spread
spectrum radio communications.
Hopefully messages about NSA crypto algorithms we
tried to bring out in my SAND report are
1 shift register based
2 parallel in nature
The stuff Grabbe wrote at
http://www.aci.net/kalliste/cryptnum.htm
and
http://www.aci.net/kalliste/stefbrdc.htm
is great.
But THIS IS NOT WHAT NSA USES FOR THE REAL
STUFF.
In fact, when NSA/Sandia tried to use the chips described
in
[5] Whitfield Diffie, "The First Ten Years of Public Key
Cryptography," Proceedings of the IEEE, 76(5), May 1988.
they met with a financial disaster. $300k to recalled EACH nuke
to remove the chips, I was told by Jerry Allen.
http://www.aci.net/kalliste/nukearse.htm
Real world engineering considerations requires simplicity.
Reliability in the field.
NSAs Brian Snow told us the problems of fielded algorithms
implementations.
Now that
NSA's Trojan Whore?
is published at
http://caq.com/CAQ/caq63/caq63madsen.html
perhaps few will trust putting their confidential information
into chips or machines manfactured by others.
Cylink is BIG into spread spectrum communications.
And, John Gilmore, I think you are right about there being some
real business opportunities in this area.
Madsen's article may cause others to leave this business.
Later
bill
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