Re: [PATCH] security/keys: make BIG_KEYS dependent on stdrng.

From: Artem Savkov
Date: Tue Oct 25 2016 - 06:26:45 EST


On Mon, Oct 24, 2016 at 03:50:54PM +0100, David Howells wrote:
> Artem Savkov <asavkov@xxxxxxxxxx> wrote:
>
> > > > IMO, the preferable fix depends on your future plan.
> > > > If you plan to continue using both ANSI X9.31 DRNG and DRBG - I agree with the
> > > > patch suggested by Artem Savkov.
> > > > If you plan to reduce using ANSI X9.31 DRNG and use DRBG more widely - I
> > > > suggest my patch.
> > >
> > > No such plans, TBH.
> >
> > I agre with Kirill here, so if we are not trying to reduce ANSI X9.31
> > DRNG usage can we move on with the suggested patch, or are there any
> > issues with it that need addressing?
>
> Which suggested patch? One of Kirill's (there are at least two) or yours?

I suggest mine, since it is more flexible.

> Note that we *also* need the "KEYS: Sort out big_key initialisation" patch -
> just changing the Kconfig is not sufficient a fix in and of itself.

Right, I see it also changes the Kconfig, so we might be better off with
v2 of "KEYS: Sort out big_key initialisation" with "depends on
(CRYPTO_ANSI_CPRNG = y || CRYPTO_DRBG = y)" in Kconfig.

--
Regards,
Artem