From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David Miller <davem@davemloft.net>,
riel@redhat.com, research@subreption.com,
linux-kernel@vger.kernel.org, pageexec@freemail.hu,
linux-mm@kvack.org, torvalds@osdl.org,
linux-crypto@vger.kernel.org
Subject: Re: [PATCH] Use kzfree in crypto API context initialization and key/iv handling
Date: Mon, 1 Jun 2009 08:58:14 +0100 [thread overview]
Message-ID: <20090601085814.3e010533@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20090601044837.GA9220@gondor.apana.org.au>
On Mon, 1 Jun 2009 14:48:37 +1000
Herbert Xu <herbert@gondor.apana.org.au> wrote:
> On Sun, May 31, 2009 at 09:46:23PM -0700, David Miller wrote:
> >
> > I don't even want to think about what this does to IPSEC rule creation
> > rates, that that matters heavily for cell phone networks where
> > hundreds of thousands of nodes come in and out of the server and each
> > such entry requires creating 4 IPSEC rules.
>
> I completely agree. The zeroing of metadata is gratuitous.
Zeroing long term keys makes sense but for the short lifepsan keys used on
the wire its a bit pointless irrespective of speed (I suspect done
properly the performance impact would be close to nil anyway)
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next prev parent reply other threads:[~2009-06-01 7:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-31 2:57 Larry H.
2009-05-31 6:02 ` David Miller
2009-05-31 14:38 ` Rik van Riel
2009-06-01 4:46 ` David Miller
2009-06-01 4:48 ` Herbert Xu
2009-06-01 7:58 ` Alan Cox [this message]
2009-06-01 12:33 ` Herbert Xu
2009-05-31 14:38 ` Rik van Riel
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