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Tue, 17 Mar 2020 21:56:52 +0000 Subject: Re: [PATCH v8 8/8] crypto: caam - limit single JD RNG output to maximum of 16 bytes To: Andrey Smirnov , "linux-crypto@vger.kernel.org" Cc: Chris Healy , Lucas Stach , Herbert Xu , Iuliana Prodan , "linux-kernel@vger.kernel.org" , dl-linux-imx References: <20200316150047.30828-1-andrew.smirnov@gmail.com> <20200316150047.30828-9-andrew.smirnov@gmail.com> From: =?UTF-8?Q?Horia_Geant=c4=83?= Message-ID: Date: Tue, 17 Mar 2020 23:56:49 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 In-Reply-To: <20200316150047.30828-9-andrew.smirnov@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: AM3PR04CA0131.eurprd04.prod.outlook.com (2603:10a6:207::15) To VI1PR0402MB3485.eurprd04.prod.outlook.com (2603:10a6:803:7::25) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.0.129] (84.117.251.185) by AM3PR04CA0131.eurprd04.prod.outlook.com (2603:10a6:207::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2814.18 via Frontend Transport; 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X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: 2TTtlajOpAkImf+lpqoGwQC/2fQdrTc4Ft/uwWLHrfVhso5UC1k3jnvLFBtEx+TXUOBo94q+qHmeqG4rQvGhY+Zte6G5W3u57WmIqzv33rDkqp0BXvGnT8jXhoil3BSOSlHwX8JroLJc4X+Jn/tBIg== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6846c386-630c-47c2-e115-08d7cabe199a X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Mar 2020 21:56:52.0610 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 7McI0x8nMpY+bMnN/bk1EzJmSRH6gFP6WOKIsWV1flerkO52Au66UpCKTRH3gX5RWQxHewBkUcg5e8UbE1nngw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB3919 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On 3/16/2020 5:01 PM, Andrey Smirnov wrote: > In order to follow recommendation in SP800-90C (section "9.4 The > Oversampling-NRBG Construction") limit the output of "generate" JD > submitted to CAAM. See > https://lore.kernel.org/linux-crypto/VI1PR0402MB3485EF10976A4A69F90E5B0F98580@VI1PR0402MB3485.eurprd04.prod.outlook.com/ > for more details. > > This change should make CAAM's hwrng driver good enough to have 1024 > quality rating. > > Signed-off-by: Andrey Smirnov > Cc: Chris Healy > Cc: Lucas Stach > Cc: Horia Geantă > Cc: Herbert Xu > Cc: Iuliana Prodan > Cc: linux-crypto@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-imx@nxp.com Reviewed-by: Horia Geantă Thanks, Horia