linux-kernel - Re: [PATCH v3] crypto: caam: blob

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Message-ID: <Y4nRHLAJeaVs1vMW@gondor.apana.org.au>
Date:   Fri, 2 Dec 2022 18:19:08 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Nikolaus Voss <nikolaus.voss@...g-streit.com>
Cc:     Horia Geanta <horia.geanta@....com>,
        Pankaj Gupta <pankaj.gupta@....com>,
        Gaurav Jain <gaurav.jain@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Ahmad Fatoum <a.fatoum@...gutronix.de>,
        David Gstir <david@...ma-star.at>,
        Steffen Trumtrar <s.trumtrar@...gutronix.de>,
        Nikolaus Voss <nv@...n.de>, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] crypto: caam: blob_gen.c: warn if key is insecure

On Mon, Nov 21, 2022 at 03:12:41PM +0100, Nikolaus Voss wrote:
> If CAAM is not in "trusted" or "secure" state, a fixed non-volatile key
> is used instead of the unique device key. This is the default mode of
> operation without secure boot (HAB). In this scenario, CAAM encrypted
> blobs should be used only for testing but not in a production
> environment, so issue a warning.
> 
> Signed-off-by: Nikolaus Voss <nikolaus.voss@...g-streit.com>
> 
> ---
> CHANGES
> =======
> v2: make warning more verbose, correct register, style fixes
> v3: fix sparse warning "dereference of noderef expression"
>     by using ioread32() to dereference iomem pointer
> 
>  drivers/crypto/caam/blob_gen.c | 9 +++++++++
>  drivers/crypto/caam/regs.h     | 3 +++
>  2 files changed, 12 insertions(+)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt