linux-kernel - Re: [PATCH] crypto: gcm

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Message-ID: <20190530150642.fswcxt6m2y4pnjon@gondor.apana.org.au>
Date:   Thu, 30 May 2019 23:06:42 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Iuliana Prodan <iuliana.prodan@....com>,
        Eric Biggers <ebiggers@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Horia Geanta <horia.geanta@....com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
        <linux-crypto@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH] crypto: gcm - fix cacheline sharing

On Thu, May 30, 2019 at 05:04:51PM +0200, Ard Biesheuvel wrote:
>
> But given your remark regarding CBC being the only algo that has this
> requirement, I wonder if this might be sufficient as well.

It's not that CBC is the only one with the requirement.  It's just
that this is the wrong output IV for CTR.

Cheers,
-- 
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