Messages in this thread | | | Date | Thu, 6 Feb 2014 14:20:02 -0800 | From | Kees Cook <> | Subject | Re: [PATCH,RFC] random: collect cpu randomness |
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Hi Jörn,
On Sun, Feb 02, 2014 at 03:36:17PM -0500, Jörn Engel wrote: > Collects entropy from random behaviour all modern cpus exhibit. The > scheduler and slab allocator are instrumented for this purpose. How > much randomness can be gathered is clearly hardware-dependent and hard > to estimate. Therefore the entropy estimate is zero, but random bits > still get mixed into the pools.
Have you seen this work from PaX Team?
http://grsecurity.net/pipermail/grsecurity/2012-July/001093.html
See http://grsecurity.net/test/grsecurity-3.0-3.13.1-201402052349.patch and search for PAX_LATENT_ENTROPY.
-Kees
-- Kees Cook @outflux.net -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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