Hardware-random-bits interface
Perry E. Metzger
perry at piermont.com
Wed Nov 15 11:29:28 PST 1995
Timothy C. May writes:
> But if you "shield the bejeebers out of it," then all the radio receiver
> generates is whatever signal manages to sneak through--which, ironically,
> would make it _easier_ for an outside attacker to drive--and some amount of
> internal receiver/amplifier noise, such as the Johnson noise talked about
> here. (Every receiver has an "equivalent noise temperature," recall.)
>
> And if one is left with only internal noise, why not simply use a nice
> clean source like a Zener diode?
Quite solidly agreed. Internal noise beats external noise, and there
is no point in using a radio receiver when what you want is internal
noise.
.pm
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