[PATCH] nvmem: sunxi-sid: SID content is not a valid source of randomness

Maxime Ripard maxime.ripard at free-electrons.com
Mon Oct 24 13:10:20 PDT 2016


On Sat, Oct 22, 2016 at 03:53:28PM +0200, Corentin Labbe wrote:
> Since SID's content is constant over reboot,

That's not true, at least not across all the Allwinner SoCs, and
especially not on the A10 and A20 that this driver supports.

> it must not be used as source of randomness.

And I don't think that's true either. A constant entropy provider will
not add any entropy, but will not remove any, would it?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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