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In-Reply-To: <20190530150642.fswcxt6m2y4pnjon@gondor.apana.org.au>
From:   Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date:   Thu, 30 May 2019 17:10:06 +0200
Message-ID: <CAKv+Gu-Z5Ayq4-M6Mwi34epoS3rzuc4=YYnq8P22_ULc3MXicg@mail.gmail.com>
Subject: Re: [PATCH] crypto: gcm - fix cacheline sharing
To:     Herbert Xu <herbert@gondor.apana.org.au>
Cc:     Iuliana Prodan <iuliana.prodan@nxp.com>,
        Eric Biggers <ebiggers@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Horia Geanta <horia.geanta@nxp.com>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
        <linux-crypto@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        dl-linux-imx <linux-imx@nxp.com>
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On Thu, 30 May 2019 at 17:06, Herbert Xu <herbert@gondor.apana.org.au> wrote:
>
> 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.
>

Are there any generic templates relying on this for other algos than CBC?