From: Clemens Ladisch <clemens@ladisch.de>
To: Stanimir Varbanov <svarbanov@mm-sol.com>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: Theodore Ts'o <tytso@mit.edu>,
Rob Herring <rob.herring@calxeda.com>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Stephen Warren <swarren@wwwdotorg.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Matt Mackall <mpm@selenic.com>,
Herbert Xu <herbert@gondor.hengli.com.au>,
linux-kernel@vger.kernel.org, Rob Landley <rob@landley.net>,
devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 0/2] Add support for Qualcomm's PRNG
Date: Fri, 11 Oct 2013 09:05:04 +0200 [thread overview]
Message-ID: <5257A320.1070207@ladisch.de> (raw)
In-Reply-To: <5256AFFE.5090605@mm-sol.com>
Stanimir Varbanov wrote:
> I ran the rngtest with following command line:
>
> # cat /dev/hw_random | rngtest -c 100000
> ...
> rngtest: bits received from input: 2000000032
> rngtest: FIPS 140-2 successes: 99925
> rngtest: FIPS 140-2 failures: 75
> ...
>
> Could you guys comment those results?
These tests are expected to fail a few times even for perfectly random
data (think monkeys/Shakespeare). An entropy source will be permanently
disabled by rngd only if the failure ratio is worse than 1 in 1000.
Regards,
Clemens
prev parent reply other threads:[~2013-10-11 7:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-03 14:52 [PATCH 0/2] Add support for Qualcomm's PRNG Stanimir Varbanov
2013-10-03 14:52 ` [PATCH 1/2] ARM: DT: msm: Add Qualcomm's PRNG driver binding document Stanimir Varbanov
2013-10-03 14:52 ` [PATCH 2/2] hwrng: msm: Add PRNG support for MSM SoC's Stanimir Varbanov
2013-10-03 19:25 ` Stephen Boyd
2013-10-04 16:31 ` Stanimir Varbanov
2013-10-04 16:37 ` Stephen Boyd
2013-10-09 8:23 ` Stanimir Varbanov
[not found] ` <1380811955-18085-1-git-send-email-svarbanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2013-10-03 16:51 ` [PATCH 0/2] Add support for Qualcomm's PRNG Theodore Ts'o
[not found] ` <20131003165130.GA11974-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2013-10-04 16:23 ` Stanimir Varbanov
[not found] ` <524EEB96.6040707-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2013-10-04 18:10 ` Theodore Ts'o
2013-10-09 14:46 ` Stanimir Varbanov
2013-10-09 15:07 ` H. Peter Anvin
2013-10-09 16:03 ` Theodore Ts'o
2013-10-09 16:24 ` H. Peter Anvin
2013-10-10 10:41 ` Paul Mackerras
2013-10-10 15:08 ` H. Peter Anvin
2013-10-10 13:47 ` Stanimir Varbanov
2013-10-11 7:05 ` Clemens Ladisch [this message]
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