Re: Hardware-random-bits interface

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