linux-kernel - Re: [PATCH v5 5/8] crypto: AF_ALG: add user space interface for RNG

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Message-ID: <1708286.gWpYI6yUk0@tachyon.chronox.de>
Date:	Tue, 23 Dec 2014 09:27:40 +0100
From:	Stephan Mueller <smueller@...onox.de>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Daniel Borkmann <dborkman@...hat.com>,
	'Quentin Gouchet' <quentin.gouchet@...il.com>,
	'LKML' <linux-kernel@...r.kernel.org>,
	linux-crypto@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH v5 5/8] crypto: AF_ALG: add user space interface for RNG

Am Montag, 22. Dezember 2014, 22:27:30 schrieb Herbert Xu:

Hi Herbert,

> On Sun, Dec 07, 2014 at 11:23:48PM +0100, Stephan Mueller wrote:
> > Allow user space to seed / reset the RNG via a setsockopt.
> > 
> > This patch reuses alg_setkey to copy data into the kernel. The
> > alg_setkey is now used for two mechanisms: setkey and seeding.
> > The function is extended by the providing the function pointer
> > to the function handling the copied data.
> > 
> > As the alg_setkey is now usable for more than just setkey, it is renamed
> > to alg_setop.
> 
> Just call it setkey, there is no harm in treating the seed as a key
> is there?
> 
> In fact we should have done this from the very start.
> crypto_rng_reset should be renamed crypto_rng_setkey.

Ok, that means I will drop this patch entirely and wire up the reseeding 
function in algif_rng.c with setkey.
> 
> Cheers,


-- 
Ciao
Stephan
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