linux-kernel - Re: [PATCH v2] crypto: sun4i-ss: support the Security System PRNG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 14 Dec 2016 07:03:40 +0100
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     davem@...emloft.net, maxime.ripard@...e-electrons.com,
        wens@...e.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] crypto: sun4i-ss: support the Security System PRNG

On Wed, Dec 14, 2016 at 01:05:51PM +0800, Herbert Xu wrote:
> On Tue, Dec 13, 2016 at 03:10:59PM +0100, Corentin Labbe wrote:
> >
> > I have found two solutions:
> 
> No we already have algif_rng so let's not confuse things even
> further by making hwrng take PRNGs.
> 

But algif_rng is not accessible from user space without any coding.
So no easy "random" data with some cat /dev/xxxx.

Clearly users of the 3 already intree hw_random PRNG will see that like a regresion.

Regards
Corentin Labbe