Poul-Henning Kamp wrote:
In message <82fec3b10cf94496afe52269282d7...@bryant1>, "Keith Payea" writes:
Hello All:
There are several electrical noise based random number generators, but most
were concieved in a time when there was a lot less EM pollution of the
airwaves.
Actually, that has always been a concern.
As far as I know, the first RNG to be connected to a computer was this
one:
http://phk.freebsd.dk/misc/DASK_rng.pdf
And they specifically had to use a Lead-Acid battery as filament
supply for the noise diode to avoid EMC issues.
The first analog random generator that was hooked to any form of digital
circuit must be the random generator used to generate the key-records
used in the SIGSALY system during WWII.
http://en.wikipedia.org/wiki/SIGSALY
It's fun to read up on the SIGSALY story. Spend some time during the
hollidays to read up on it. :)
I think you will realize there is some interesting time synchronisation
issues in there. :)
Cheers,
Magnus
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