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Subject: Re: [PATCH v9 8/9] crypto: caam - enable prediction resistance in
 HRWNG
To:     Andrey Smirnov <andrew.smirnov@gmail.com>,
        linux-crypto@vger.kernel.org
Cc:     Andrei Botila <andrei.botila@nxp.com>,
        Chris Healy <cphealy@gmail.com>,
        Lucas Stach <l.stach@pengutronix.de>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Iuliana Prodan <iuliana.prodan@nxp.com>,
        linux-kernel@vger.kernel.org, linux-imx@nxp.com
References: <20200319161233.8134-1-andrew.smirnov@gmail.com>
 <20200319161233.8134-9-andrew.smirnov@gmail.com>
From:   =?UTF-8?Q?Horia_Geant=c4=83?= <horia.geanta@nxp.com>
Message-ID: <723de89a-4d5c-467a-4008-fd5e575bb43d@nxp.com>
Date:   Fri, 20 Mar 2020 17:49:07 +0200
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On 3/19/2020 6:13 PM, Andrey Smirnov wrote:
> Instantiate CAAM RNG with prediction resistance enabled to improve its
> quality (with PR on DRNG is forced to reseed from TRNG every time
> random data is generated).
> 
> Management Complex firmware with version lower than 10.20.0
> doesn't provide prediction resistance support. Consider this
> and only instantiate rng when mc f/w version is lower.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> Signed-off-by: Andrei Botila <andrei.botila@nxp.com>
> Cc: Chris Healy <cphealy@gmail.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Horia Geantă <horia.geanta@nxp.com>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
> Cc: linux-crypto@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-imx@nxp.com
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>

Thanks,
Horia