From: Herbert Xu <herbert@gondor.apana.org.au>
To: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Cc: Vinod Koul <vinod.koul@linaro.org>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
Matt Mackall <mpm@selenic.com>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-arm-msm@vger.kernel.org, Vinod Koul <vkoul@kernel.org>
Subject: Re: [PATCH 3/3] hwrng: msm - Add support for prng v2
Date: Fri, 22 Jun 2018 22:38:29 +0800 [thread overview]
Message-ID: <20180622143829.rd2ys6ci7q3aupst@gondor.apana.org.au> (raw)
In-Reply-To: <6782b1c0-ea94-b07c-2fae-3fe3223bb22a@linaro.org>
On Fri, Jun 22, 2018 at 11:27:59AM +0300, Stanimir Varbanov wrote:
> Hi Herbert,
>
> On 06/21/2018 02:53 PM, Herbert Xu wrote:
> > On Thu, Jun 21, 2018 at 02:27:10PM +0300, Stanimir Varbanov wrote:
> >>
> >> OK, I just wanted to say that it is _not_ PRNG and the register names
> >> gives us wrong impression.
> >
> > So does it generate one bit of output for each bit of hardware-
> > generated entropy like /dev/random? Or does it use a hardware-
> > generated seed to power a PRNG?
>
> I believe it is the second one. Isn't the second one SP 800-90A?
In that case it should switch over to algif_rng.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2018-06-22 14:38 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-18 14:12 [PATCH 0/3]: hwrng: Add support for qcpm v2 hwrng Vinod Koul
2018-06-18 14:12 ` [PATCH 1/3] hwrng: msm - Move hwrng to a table Vinod Koul
2018-06-18 15:58 ` Stephen Boyd
2018-06-18 16:54 ` Vinod
2018-06-18 14:12 ` [PATCH 2/3] dt-bindings: rng: Add new compatible qcom,prng-v2 Vinod Koul
2018-06-18 14:12 ` [PATCH 3/3] hwrng: msm - Add support for prng v2 Vinod Koul
2018-06-18 18:21 ` Bjorn Andersson
2018-06-18 20:24 ` Stephen Boyd
2018-06-19 4:06 ` Vinod
2018-06-19 4:04 ` Vinod
2018-06-19 14:28 ` Herbert Xu
2018-06-20 5:32 ` Vinod
2018-06-20 14:37 ` Herbert Xu
2018-06-20 17:45 ` PrasannaKumar Muralidharan
2018-06-21 4:17 ` Vinod
2018-06-21 9:56 ` Stanimir Varbanov
2018-06-21 10:15 ` Herbert Xu
2018-06-21 11:27 ` Stanimir Varbanov
2018-06-21 11:53 ` Herbert Xu
2018-06-22 8:27 ` Stanimir Varbanov
2018-06-22 14:38 ` Herbert Xu [this message]
2018-06-22 14:48 ` Vinod
2018-06-22 14:50 ` Herbert Xu
[not found] ` <70ED61EB-BD3E-48D1-8B4D-D7835494C035@chronox.de>
2018-06-27 5:08 ` Vinod
2018-06-27 6:13 ` Stephan Mueller
2018-06-27 6:27 ` Vinod
2018-06-27 6:43 ` Stephan Mueller
2018-06-27 7:01 ` Vinod
2018-06-27 7:51 ` Stephan Mueller
2018-06-22 15:33 ` Stanimir Varbanov
2018-06-28 22:04 ` Timur Tabi
2018-06-29 8:37 ` Vinod
2018-07-01 6:27 ` Herbert Xu
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