linux-kernel - Re: [PATCH] lib: memcmp_nta: add timing-attack secure memcmp

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Message-ID: <51182DAB.1030708@redhat.com>
Date:	Mon, 11 Feb 2013 00:30:51 +0100
From:	Daniel Borkmann <dborkman@...hat.com>
To:	Joe Perches <joe@...ches.com>
CC:	gregkh@...uxfoundation.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib: memcmp_nta: add timing-attack secure memcmp

On 02/11/2013 12:24 AM, Joe Perches wrote:
> On Sun, 2013-02-10 at 23:00 +0100, Daniel Borkmann wrote:
>> add memcmp_nta ({n}o {t}iming {a}ttacks)
>
> Why should this be in the kernel?

As the commit message already says, so that current or future (e.g.) network
protocol code or modules can make use of this when dealing with cryptographic
hash comparisons.
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