Re: randomdev entropy gathering is really weak

[Warner Losh]

In message <[EMAIL PROTECTED]> Peter Dufault writes:
: > The reason why ntp is interesting is that we compare the received data
: > with our unpredictable local clock.  It is the result of this comparison
: > which is good entropy bits.
: 
: Is the resolution of thermal sensors on many new motherboards and
: CPU high enough to get thermal randomness?

Yes.  You'll also find that the voltage drifts as well.  However, I
doubt you'd be able to get more than 1 bit out of the voltage
readings.  The thermal readings, depending on their precision, would
also yield several random bits.  But this several may be only 3 or 4.
The temperature varies based on work load and on the climate controls
in place at the site.


Warner


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