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

From Maxime Ripard <maxime.ripard@free-electrons.com>
Newsgroups linux.kernel
Subject Re: [PATCH] nvmem: sunxi-sid: SID content is not a valid source of randomness
Date 2016-10-24 22:20 +0200
Message-ID <svTSW-43c-5@gated-at.bofh.it> (permalink)
References <sv506-48d-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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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Thread

[PATCH] nvmem: sunxi-sid: SID content is not a valid source of randomness Corentin Labbe <clabbe.montjoie@gmail.com> - 2016-10-22 16:00 +0200
  Re: [PATCH] nvmem: sunxi-sid: SID content is not a valid source of  randomness Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-10-24 22:20 +0200
    Re: [PATCH] nvmem: sunxi-sid: SID content is not a valid source of  randomness LABBE Corentin <clabbe.montjoie@gmail.com> - 2016-10-25 07:50 +0200
      Re: [PATCH] nvmem: sunxi-sid: SID content is not a valid source of  randomness Jean-Francois Moine <moinejf@free.fr> - 2016-10-25 09:20 +0200
      Re: [PATCH] nvmem: sunxi-sid: SID content is not a valid source of  randomness Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-10-27 00:20 +0200

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