From: Stephan Mueller <smueller@chronox.de>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Pan, Miaoqing" <miaoqing@qti.qualcomm.com>,
Matt Mackall <mpm@selenic.com>,
"miaoqing@codeaurora.org" <miaoqing@codeaurora.org>,
"Valo, Kalle" <kvalo@qca.qualcomm.com>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
ath9k-devel <ath9k-devel@qca.qualcomm.com>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
"jason@lakedaemon.net" <jason@lakedaemon.net>,
"Sepehrdad, Pouyan" <pouyans@qti.qualcomm.com>
Subject: Re: [PATCH 2/2] ath9k: disable RNG by default
Date: Tue, 09 Aug 2016 11:02:58 +0200 [thread overview]
Message-ID: <2569442.q63FVBJjUH@tauon.atsec.com> (raw)
In-Reply-To: <20160809085858.GA6172@gondor.apana.org.au>
Am Dienstag, 9. August 2016, 16:58:58 CEST schrieb Herbert Xu:
Hi Herbert,
> On Tue, Aug 09, 2016 at 10:07:29AM +0200, Stephan Mueller wrote:
> > Herbert, Matt, should such noise sources be added to the HW random
> > framework? The thing is that the in-kernel HW random to input_pool link
> > per default uses a more conservative entropy estimate than the user space
> > rngd. I would think that the in-kernel link would appropriate for that
> > rng. But the user space rngd tool with its default behavior is not really
> > suited here.
>
> Yes hwrng would be the best fit, with a quality of zero to be safe.
>
> Contrary to the quoted thread, there is no need to whiten the output
> /dev/hw_random. It was always meant to go through some intermediate
> processing such as rngd before it is used.
But shouldn't the default of the rngd then be adjusted a bit?
>
> Cheers,
Ciao
Stephan
next prev parent reply other threads:[~2016-08-09 9:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-09 7:02 [PATCH 1/2] ath9k: change entropy formula for easier understanding miaoqing
2016-08-09 7:02 ` [PATCH 2/2] ath9k: disable RNG by default miaoqing
2016-08-09 7:14 ` Stephan Mueller
2016-08-09 7:35 ` Pan, Miaoqing
2016-08-09 8:07 ` Stephan Mueller
2016-08-09 8:58 ` Herbert Xu
2016-08-09 9:02 ` Stephan Mueller [this message]
2016-08-09 9:17 ` Herbert Xu
2016-08-09 9:37 ` Stephan Mueller
2016-08-09 9:46 ` Herbert Xu
2016-08-09 9:56 ` Stephan Mueller
2016-08-09 9:56 ` Herbert Xu
2016-08-09 10:06 ` Stephan Mueller
2016-08-09 10:24 ` Henrique de Moraes Holschuh
2016-08-09 17:51 ` Jason Cooper
2016-08-10 2:35 ` Pan, Miaoqing
2016-08-10 5:29 ` Stephan Mueller
2016-08-10 6:04 ` Pan, Miaoqing
2016-08-10 6:25 ` Stephan Mueller
2016-08-10 6:46 ` Pan, Miaoqing
2016-08-10 6:51 ` Stephan Mueller
2016-08-10 7:15 ` Pan, Miaoqing
2016-08-10 7:27 ` Stephan Mueller
2016-08-10 7:40 ` Pan, Miaoqing
2016-08-10 7:43 ` Pan, Miaoqing
2016-08-10 13:24 ` Jason Cooper
2016-08-11 2:54 ` miaoqing
2016-08-11 13:14 ` Jason Cooper
2016-08-09 17:48 ` Jason Cooper
2016-09-28 10:00 ` [2/2] " Kalle Valo
2016-09-27 14:53 ` [1/2] ath9k: change entropy formula for easier understanding Kalle Valo
2016-10-13 14:23 ` Kalle Valo
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