linux-kernel - Re: [CRYPTO] is it really optimized ?

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Message-ID: <38b2ab8a0704141410q65f55381w26527aeb10fb4988@mail.gmail.com>
Date:	Sat, 14 Apr 2007 23:10:08 +0200
From:	"Francis Moreau" <francis.moro@...il.com>
To:	"Herbert Xu" <herbert@...dor.apana.org.au>
Cc:	helge.hafting@...el.hist.no, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org
Subject: Re: [CRYPTO] is it really optimized ?

On 4/14/07, Herbert Xu <herbert@...dor.apana.org.au> wrote:
> Francis Moreau <francis.moro@...il.com> wrote:
> >
> > hmm yes indeed it should do the job, but I don't see how you do that.
> > For example, let say I want to use "aes-foo" with eCryptfs. I can give
> > a higher priority to "aes-foo" than "aes" one. When eCryptfs asks for
> > a aes cipher it will pass "aes" name and since "aes-foo" has a higher
> > priority then the cypto core will return "aes-foo" cipher, right ? But
> > in this scheme, eCryptfs has not a higher priority than other kernel
> > users. How can I prevent others to use "aes-foo" ?
>
> You would assign "aes-foo" a lower priority and then tell eCryptfs to
> use "aes-foo" instead of "aes".
>

ok but do you think it's safe to assume that no others parts of the
kernel will request "aes-foo" ? Remember that the main point is to
optimize "aes-foo" ?

I would say that it would be better if "aes-foo" could raise a flag
for example indicating to the crypto core that this algo can be
instatiate only one time...

thanks
-- 
Francis
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