From: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Subject: Re: [PATCH v3 1/3] crypto: hw_random - Add new Exynos RNG driver
Date: Mon, 27 Mar 2017 09:53:11 +0530
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References: <20170325162654.3827-1-krzk@kernel.org>
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Cc: linux-samsung-soc@vger.kernel.org, Herbert Xu <herbert@gondor.apana.org.au>,
 Arnd Bergmann <arnd@arndb.de>,
 Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
 linux-kernel@vger.kernel.org, Krzysztof Kozlowski <krzk@kernel.org>,
 Javier Martinez Canillas <javier@osg.samsung.com>,
 Kukjin Kim <kgene@kernel.org>, linux-crypto@vger.kernel.org,
 Matt Mackall <mpm@selenic.com>, Olof Johansson <olof@lixom.net>,
 "David S. Miller" <davem@davemloft.net>, linux-arm-kernel@lists.infradead.org
To: =?UTF-8?Q?Stephan_M=C3=BCller?= <smueller@chronox.de>
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Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org

> Oh my, if you are right with your first guess, this is a bad DRNG design.
>
> Just out of curiousity: what happens if a caller invokes the seed function
> twice or more times (each time with the sufficient amount of bits)? What is
> your guess here?

Should the second seed use the random data generated by the device?

Regards,
PrasannaKumar