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From: "Łukasz Stelmach" <l.stelmach@samsung.com>
To: Matt Mackall <mpm@selenic.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>,
	bcm-kernel-feedback-list@broadcom.com,
	Kukjin Kim <kgene@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Markus Elfring <elfring@users.sourceforge.net>,
	Matthias Brugger <mbrugger@suse.com>,
	Stefan Wahren <wahrenst@gmx.net>,
	linux-crypto@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	Stephan Mueller <smueller@chronox.de>
Cc: "Łukasz Stelmach" <l.stelmach@samsung.com>,
	"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>
Subject: [PATCH v2 1/2] hwrng: iproc-rng200 - Set the quality value
Date: Tue, 19 May 2020 23:25:51 +0200	[thread overview]
Message-ID: <20200519212552.11671-2-l.stelmach@samsung.com> (raw)
In-Reply-To: <20200519212552.11671-1-l.stelmach@samsung.com>

The value was estimaded with ea_iid[1] using on 10485760 bytes read from
the RNG via /dev/hwrng. The min-entropy value calculated using the most
common value estimate (NIST SP 800-90P[2], section 6.3.1) was 7.964464.

[1] https://github.com/usnistgov/SP800-90B_EntropyAssessment
[2] https://csrc.nist.gov/publications/detail/sp/800-90b/final

Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
---
 drivers/char/hw_random/iproc-rng200.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/hw_random/iproc-rng200.c b/drivers/char/hw_random/iproc-rng200.c
index 32d9fe61a225..95669ece050f 100644
--- a/drivers/char/hw_random/iproc-rng200.c
+++ b/drivers/char/hw_random/iproc-rng200.c
@@ -199,6 +199,7 @@ static int iproc_rng200_probe(struct platform_device *pdev)
 	priv->rng.read = iproc_rng200_read,
 	priv->rng.init = iproc_rng200_init,
 	priv->rng.cleanup = iproc_rng200_cleanup,
+	priv->rng.quality = 1000,
 
 	/* Register driver */
 	ret = devm_hwrng_register(dev, &priv->rng);
-- 
2.26.2


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  parent reply	other threads:[~2020-05-19 21:26 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200514190737eucas1p18ccdddb185ea7611683a6859e17bc721@eucas1p1.samsung.com>
2020-05-14 19:07 ` [PATCH 0/2] Set the quality value for two HW RNGs Łukasz Stelmach
     [not found]   ` <CGME20200514190738eucas1p2695c0d8af064ee702209ca03696ef438@eucas1p2.samsung.com>
2020-05-14 19:07     ` [PATCH 1/2] hwrng: iproc-rng200 - Set the quality value Łukasz Stelmach
2020-05-14 20:20       ` Stephan Mueller
     [not found]         ` <CGME20200514221852eucas1p2bea169d0b4467b0ec9e195c6ac58a08a@eucas1p2.samsung.com>
2020-05-14 22:18           ` Lukasz Stelmach
2020-05-15  8:32             ` Stephan Mueller
     [not found]               ` <CGME20200515090647eucas1p21018edfd835730c9a68dcb186349ee74@eucas1p2.samsung.com>
2020-05-15  9:06                 ` Lukasz Stelmach
     [not found]             ` <CGME20200515090158eucas1p1b653fc50f1ad4f0f6c92525ab3188d45@eucas1p1.samsung.com>
2020-05-15  9:01               ` Lukasz Stelmach
2020-05-15  9:10                 ` Stephan Mueller
     [not found]                   ` <CGME20200515110002eucas1p136759396d9b61f214d1f14856c009501@eucas1p1.samsung.com>
2020-05-15 10:59                     ` Lukasz Stelmach
     [not found]   ` <CGME20200514190740eucas1p293129b2ef3ba706652a9327e55db9649@eucas1p2.samsung.com>
2020-05-14 19:07     ` [PATCH 2/2] hwrng: exynos " Łukasz Stelmach
2020-05-14 20:20       ` Stephan Mueller
     [not found]   ` <CGME20200519212617eucas1p1b6e7af0ecb894896b165601fafd6abe8@eucas1p1.samsung.com>
2020-05-19 21:25     ` [PATCH v2 0/2] Set the quality value for two HW RNGs Łukasz Stelmach
     [not found]       ` <CGME20200519212619eucas1p22fa5d3db2521096dc4b79f6e53016d17@eucas1p2.samsung.com>
2020-05-19 21:25         ` Łukasz Stelmach [this message]
2020-05-20  6:23           ` [PATCH v2 1/2] hwrng: iproc-rng200 - Set the quality value Stephan Mueller
     [not found]             ` <CGME20200520091043eucas1p15ecae108007382a95b01e42241cc7a26@eucas1p1.samsung.com>
2020-05-20  9:10               ` Lukasz Stelmach
2020-05-20  9:18                 ` Stephan Mueller
     [not found]                   ` <CGME20200520104448eucas1p122e9a8ed84d5276a1b796e10ef5e1964@eucas1p1.samsung.com>
2020-05-20 10:44                     ` Lukasz Stelmach
2020-05-20 11:53                       ` Stephan Mueller
2020-05-20 12:00                         ` Krzysztof Kozlowski
2020-05-20 12:11                           ` Stephan Mueller
     [not found]                         ` <CGME20200520143211eucas1p21bd93be5c62726aa715db05bb6e7119b@eucas1p2.samsung.com>
2020-05-20 14:31                           ` Lukasz Stelmach
2020-05-20  8:18           ` Kamil Konieczny
2020-05-21 11:00           ` Stefan Wahren
     [not found]             ` <CGME20200521191415eucas1p2d112a86171b23dcf255e7da53a56f4f3@eucas1p2.samsung.com>
2020-05-21 19:14               ` Lukasz Stelmach
2020-05-23 18:46                 ` Stephan Müller
     [not found]       ` <CGME20200519212621eucas1p13279db41d930b69e115972463c994a37@eucas1p1.samsung.com>
2020-05-19 21:25         ` [PATCH v2 2/2] hwrng: exynos " Łukasz Stelmach

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