On Thu, Mar 25, 2010 at 14:34, Ed W <li...@wildgooses.com> wrote: > I noticed a munin script in the ekeyd download - haven't tried it, but the > quantity of variables you can monitor from the device seemed quite > impressive. Who would have thought you would have wanted to graph the > temperature of your random number generator, but for those who do, you are > in luck...
Thermal and power fluctuations are common approaches to subverting the entropy available in an RNG. Thermal noise based entropy generators are particularly sensitive to this - reduce the temperature, reduce the entropy. IIRC, the VIA RNG is based on a pair of thermal sensors, but since they're on-die it's regarded more as difficult to subvert than an external set.
