linux-kernel - Re: [PATCH v2 2/2] crypto: engine - Permit to enqueue skcipher request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170728150119.GD7221@Red>
Date:   Fri, 28 Jul 2017 17:01:19 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     davem@...emloft.net, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] crypto: engine - Permit to enqueue skcipher
 request

On Fri, Jul 28, 2017 at 09:52:57PM +0800, Herbert Xu wrote:
> On Fri, Jul 14, 2017 at 01:15:36PM +0200, Corentin Labbe wrote:
> > On Fri, Jun 23, 2017 at 02:48:37PM +0800, Herbert Xu wrote:
> > > On Mon, Jun 19, 2017 at 09:55:24AM +0200, Corentin Labbe wrote:
> > > >
> > > > Since there are two different user of "crypto engine + ablkcipher", it will be not easy to convert them in one serie. (I could do it, but I simply could not test it for OMAP (lack of hw))
> > > > And any new user which want to use crypto engine+skcipher (like me with the sun8i-ce driver) are simply stuck.
> > > 
> > > You're right.  We'll need to do this in a backwards-compatible way.  In fact
> > > we already do something similar in skcipher.c itself.  Simply look at the
> > > cra_type field and if it matches blkcipher/ablkcipher/givcipher then it's
> > > legacy ablkcipher, otherwise it's skcipher.
> > > 
> > > Also the way crypto_engine looks at the request type in the data-path is
> > > suboptimal.  This should really be built into the cra_type object.  For
> > > example, we can have cra_type->engine->prepare_request which would just
> > > do the right thing.
> > > 
> > 
> > Not sure to have well understand what you want.
> > You want that I switch on cra_type instead of crypto_tfm_alg_type() ?
> 
> No I mean that we should have an engine hooks object registered
> under cra_type so that you simply call
> 
> 	cra_type->engine->prepare_request()
> 
> regardless of what type you're using.
> 

I am sorry, I didnt see how to do that.