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RNG
>
> 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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