Hi! > As far as whether or not you can gather enough entropy at boot time, > what we're really talking about how how much entropy we want to assume > can be gathered from interrupt timings, since what you do in your code > is not all that different from what the current random driver is > doing. So it's pretty easy to turn a knob and say, "hey presto, we > can get all of the entropy we need before userspace starts!" But > justifying this is much harder, and using statistical tests isn't > really sufficient as far as I'm concerned. Actually.. I'm starting to believe that getting enough entropy before userspace starts is more important than pretty much anything else. We only "need" 64-bits of entropy, AFAICT. If it passes statistical tests, I'd use it... for initial bringup. We can switch to more conservative estimates when system is fully running. But IMO it is very important to get _some_ randomness at the begining... Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
