linux-kernel - Re: [PATCH] crypto: caam - update xts sector size for large input length

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Message-ID: <20200306015209.GL30653@gondor.apana.org.au>
Date:   Fri, 6 Mar 2020 12:52:09 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Andrei Botila <andrei.botila@....nxp.com>
Cc:     Horia Geanta <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrei Botila <andrei.botila@....com>, stable@...r.kernel.org
Subject: Re: [PATCH] crypto: caam - update xts sector size for large input
 length

On Fri, Feb 28, 2020 at 12:46:48PM +0200, Andrei Botila wrote:
> From: Andrei Botila <andrei.botila@....com>
> 
> Since in the software implementation of XTS-AES there is
> no notion of sector every input length is processed the same way.
> CAAM implementation has the notion of sector which causes different
> results between the software implementation and the one in CAAM
> for input lengths bigger than 512 bytes.
> Increase sector size to maximum value on 16 bits.
> 
> Fixes: c6415a6016bf ("crypto: caam - add support for acipher xts(aes)")
> Cc: <stable@...r.kernel.org> # v4.12+
> Signed-off-by: Andrei Botila <andrei.botila@....com>
> ---
> This patch needs to be applied from v4.12+ because dm-crypt has added support
> for 4K sector size at that version. The commit was
> 8f0009a225171 ("dm-crypt: optionally support larger encryption sector size").
> 
>  drivers/crypto/caam/caamalg_desc.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)

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