From: David Lesher <wb8foz@nrk.com>
Date: Sun, 30 Jun 1996 23:13:02 +0800
To: cypherpunks@toad.com (Cypherpunks)
Subject: RNG
Message-ID: <199606301251.IAA00411@nrk.com>
MIME-Version: 1.0
Content-Type: text



> 
> I just recently built a hardware RNG, I just wanted to see what you guys 
> think of it, here is how it works:
> 
> 	Got a geiger counter plugged into the game port
> 	Weak radioactive source next to it (dont worry wont fry you)
> 	Use a PRNG string to do create an RC4 S-box
> 	Cycle through the S-box in a tight loop, each time checking to 
> see if the geiger counter got a hit, if it did, record that number in 
> the S-box as our first byte, do this 100 times, and we have 100 random 
> numbers.
> 


Tony Patti just gave the DC 'Punks a great talk on this topic.
He built a faster RNG he called RANGER -- it connects to the parallel
port. Plans for it are available in Cryptosystems Journal....


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