Re: [PATCH] Use kzfree in crypto API context initialization andkey/iv handling

[Alan Cox]

On Mon, 1 Jun 2009 14:48:37 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> 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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