From: Julien Grall <julien@xen.org>
To: Sergiy Kibrik <Sergiy_Kibrik@epam.com>, xen-devel@lists.xenproject.org
Cc: Ian Jackson <ian.jackson@eu.citrix.com>, Wei Liu <wl@xen.org>
Subject: Re: [XEN PATCH v2] libxl/arm: provide guests with random seed
Date: Thu, 3 Jun 2021 14:08:20 +0100 [thread overview]
Message-ID: <78b26e15-a3ca-e218-9afa-9f443e234260@xen.org> (raw)
In-Reply-To: <20210527085233.69917-1-Sergiy_Kibrik@epam.com>
Hi,
On 27/05/2021 09:52, Sergiy Kibrik wrote:
> Pass 128 bytes of random seed via FDT, so that guests' CRNGs are better seeded
> early at boot. This is larger than ChaCha20 key size of 32, so each byte of
> CRNG state will be mixed 4 times using this seed. There does not seem to be
> advantage in larger seed though.
>
> Depending on its configuration Linux can use the seed as device randomness
> or to just quickly initialize CRNG.
> In either case this will provide extra randomness to further harden CRNG.
>
> CC: Julien Grall <julien@xen.org>
> Signed-off-by: Sergiy Kibrik <Sergiy_Kibrik@epam.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Ian, Wei, can we get an ack for this patch?
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2021-06-03 13:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 8:52 [XEN PATCH v2] libxl/arm: provide guests with random seed Sergiy Kibrik
2021-06-03 13:08 ` Julien Grall [this message]
2021-06-30 10:12 ` Julien Grall
2021-06-30 11:52 ` Sergiy Kibrik
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