linux-kernel - Re: [PATCH 1/2] crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error)

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Date:   Fri, 29 Jan 2021 16:10:37 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 1/2] crypto: talitos - Work around SEC6 ERRATA (AES-CTR
 mode data size error)

On Wed, Jan 20, 2021 at 06:57:24PM +0000, Christophe Leroy wrote:
> Talitos Security Engine AESU considers any input
> data size that is not a multiple of 16 bytes to be an error.
> This is not a problem in general, except for Counter mode
> that is a stream cipher and can have an input of any size.
> 
> Test Manager for ctr(aes) fails on 4th test vector which has
> a length of 499 while all previous vectors which have a 16 bytes
> multiple length succeed.
> 
> As suggested by Freescale, round up the input data length to the
> nearest 16 bytes.
> 
> Fixes: 5e75ae1b3cef ("crypto: talitos - add new crypto modes")
> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
> ---
>  drivers/crypto/talitos.c | 28 ++++++++++++++++------------
>  drivers/crypto/talitos.h |  1 +
>  2 files changed, 17 insertions(+), 12 deletions(-)

All 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