Re: [PATCH 7/14] random: Remove SA_SAMPLE_RANDOM from network drivers

From: Matt Mackall
Date: Sun May 07 2006 - 23:13:24 EST


On Sun, May 07, 2006 at 08:13:33PM -0400, Theodore Tso wrote:
> But in answer to your question, what should we do, my suggestion would
> be to sample all interrupts, and calculate the estimated entropy
> credits as we to day, but scaled by an amount that can range from 0 to
> 100%.

I actually posted a patch to add a sysctl to do exactly that a few
years ago.

> But for most normal/modern platforms, I would argue the default
> scaling factor should be 100%.

And I would argue it should be no more than 50%. Just because I've
seen so many would-have-thought-they-were-impossible attacks pan out.

--
Mathematics is the supreme nostalgia of our time.
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