linux-kernel - Re: [PATCH] crypto: Add a flag allowing the self-tests to be disabled at runtime.

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Date:	Fri, 29 Apr 2016 12:04:46 +0100
From:	"Richard W.M. Jones" <rjones@...hat.com>
To:	Stephan Mueller <sm@...rm.de>
Cc:	linux-kernel@...r.kernel.org, corbet@....net,
	herbert@...dor.apana.org.au, davem@...emloft.net,
	linux-doc@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH] crypto: Add a flag allowing the self-tests to be
 disabled at runtime.

On Fri, Apr 29, 2016 at 12:59:57PM +0200, Stephan Mueller wrote:
> Am Freitag, 29. April 2016, 11:07:43 schrieb Richard W.M. Jones:
> 
> Hi Richard,
[...]
> > +	if (notests) {
> 
> What about if (!fips_enabled && notests) ?
>
> I am not sure whether the kernel should prevent mistakes in user space. A 
> mistake would be when setting fips=1 and notests=1 as the FIPS mode mandates 
> the self tests.

(Sorry, I just posted v2 before I saw this message.)  I saw the FIPS
stuff and thought about that.  Should we prevent mistakes like that?
I really don't know.

Rich.

> > +		pr_info("alg: self-tests disabled\n");
> > +		return 0;
> > +	}
> > +
> >  	alg_test_descs_check_order();
> > 
> >  	if ((type & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_CIPHER) {
> 
> 
> Ciao
> Stephan
> -- 
> | Nimm das Recht weg -                                             |
> |  was ist dann der Staat noch anderes als eine große Räuberbande? |

-- 
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