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From: "Pan, Miaoqing" <miaoqing@qti.qualcomm.com>
To: Stephan Mueller <smueller@chronox.de>
CC: Herbert Xu <herbert@gondor.apana.org.au>,
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Subject: RE: [PATCH 2/2] ath9k: disable RNG by default
Date: Wed, 10 Aug 2016 07:15:49 +0000
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Hi Stephan,

NIST SP 800-22-rev1a and NIST SP 800-90B are used together to evaluate the amount of min entropy the source provides, and not to decide if the source has passed the tests or failed. See

https://github.com/usnistgov/SP800-90B_EntropyAssessment

The goal is often to make sure the input entropy is more than the entropy we expect from the output.

Thanks,
Miaoqing

-----Original Message-----
From: Stephan Mueller [mailto:smueller@chronox.de] 
Sent: Wednesday, August 10, 2016 2:52 PM
To: Pan, Miaoqing <miaoqing@qti.qualcomm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>; Matt Mackall <mpm@selenic.com>; miaoqing@codeaurora.org; Valo, Kalle <kvalo@qca.qualcomm.com>; linux-wireless@vger.kernel.org; ath9k-devel <ath9k-devel@qca.qualcomm.com>; linux-crypto@vger.kernel.org; jason@lakedaemon.net; Sepehrdad, Pouyan <pouyans@qti.qualcomm.com>
Subject: Re: [PATCH 2/2] ath9k: disable RNG by default

Am Mittwoch, 10. August 2016, 06:46:31 CEST schrieb Pan, Miaoqing:

Hi Miaoqing,

> Hi Stephan,
> 
> Would you please provide a recent NIST document which asks the entropy 
> source to pass the NIST randomness tests ?

See FIPS 140-2 IG 7.15 which explicitly references SP800-22.

Ciao
Stephan