linux-kernel - Re: [PATCH] Use kzfree in crypto API context initialization and key/iv handling

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Message-ID: <20090601123342.GA13261@gondor.apana.org.au>
Date:	Mon, 1 Jun 2009 22:33:42 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	davem@...emloft.net, riel@...hat.com, research@...reption.com,
	linux-kernel@...r.kernel.org, pageexec@...email.hu,
	linux-mm@...ck.org, torvalds@...l.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH] Use kzfree in crypto API context initialization and
	key/iv handling

Alan Cox <alan@...rguk.ukuu.org.uk> wrote:
>
> 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)

Sure, though we're not actually arguing whether keys should be
zeroed here, but the metadata, i.e., pointers to keys, buffers,
etc.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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