From: Eric Hughes <hughes@soda.berkeley.edu>
Date: Tue, 1 Jun 93 08:54:26 PDT
To: cypherpunks@toad.com
Subject: Crypto anarchy in a VW? (not the bug)
In-Reply-To: <Pine.3.03.9306010040.A26846-d100000@rtfm>
Message-ID: <9306011628.AA17049@soda.berkeley.edu>
MIME-Version: 1.0
Content-Type: text/plain


>I think that building privacy into the architecture would be inherently 
>dangerous, however, it is a perfect way for the people building the system
>to oppress the users, all the while convincing them that the system is 
>secure.

We build the privacy into the system, not the government.  The
question is _who decides_?  If we decide by creating, then more
privacy will exist by fiat.

>The only way to ensure your privacy is to seize it yourself.

Absolutely.  This does not contradict our activity of building the
privacy into the system.  Any privacy system you can build on top of
an insecure network such as the internet can also be built on top of a
privacy-friendly network.

>There are a lot of ways to get a signal around the world without using a 
>satellite, ask any amateur radio enthusiast.  

One of the really great techniques I've hear about recently is a data
channel that runs at 90% T1 speed over the ~900 MHz spread spectrum
band.  The legal limit is 1W transmitter power and 4W antenna gain
(transmitted energy focusing).  From what I hear, though, the antenna
gain requirements are being ignored by lots of folks.  What this means
in practice is that you can set up a directional antenna and easily
get a twenty mile hop on one of these units.

>Why is there not more work being done on encrypting all internode traffic
>streams?  It doesn't seem too hard.

Cylink has had a T1 link encrypter out for years.  It uses D-H for key
exchange.  It's also costs (not-known-to-be-accurate) about 10K$ per
end.

Eric