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From:   "Bhat, Jayalakshmi Manjunath" <jayalakshmi.bhat@hp.com>
To:     =?iso-8859-1?Q?Stephan_M=FCller?= <smueller@chronox.de>,
        Ard Biesheuvel <ardb@kernel.org>
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Subject: RE: Monte Carlo Test (MCT) for AES
Thread-Topic: Monte Carlo Test (MCT) for AES
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Date:   Tue, 26 May 2020 03:07:15 +0000
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Hi Stephen,

I to add the backend support using libkcapi APIs to exercise Kernel CAVP.
Can you please  confirm if my understanding is correct?

Regards,
Jaya

From: linux-crypto-owner@vger.kernel.org <linux-crypto-owner@vger.kernel.or=
g> On Behalf Of Stephan M=FCller
Sent: Sunday, May 24, 2020 12:14 AM
To: Bhat, Jayalakshmi Manjunath <jayalakshmi.bhat@hp.com>; Ard Biesheuvel <=
ardb@kernel.org>
Cc: linux-crypto@vger.kernel.org
Subject: Re: Monte Carlo Test (MCT) for AES

Am Samstag, 23. Mai 2020, 00:11:35 CEST schrieb Ard Biesheuvel:

Hi Ard,

> (+ Stephan)
>=20
> On Fri, 22 May 2020 at 05:20, Bhat, Jayalakshmi Manjunath
>=20
> <mailto:jayalakshmi.bhat@hp.com> wrote:
> > Hi All,
> >=20
> > We are using libkcapi for CAVS vectors verification on our Linux kernel=
.
> > Our Linux kernel version is 4.14. Monte Carlo Test (MCT) for SHA worked
> > fine using libkcapi. We are trying to perform Monte Carlo Test (MCT) fo=
r
> > AES using libkcapi. We not able to get the result successfully. Is it
> > possible to use libkcapi to achieve AES MCT?

Yes, it is possible. I have the ACVP testing implemented completely for AES=
=20
(ECB, CBC, CFB8, CFB128, CTR, XTS, GCM internal and external IV generation,=
=20
CCM), TDES (ECB, CTR, CBC), SHA, HMAC, CMAC (AES and TDES). I did not yet t=
ry=20
TDES CFB8 and CFB64 through, but it should work out of the box.

AES-KW is the only one that cannot be tested through libkcapi as AF_ALG has=
=20
one shortcoming preventing this test.

The testing is implemented with [1] but the libkcapi test backend is not=20
public. The public code in [1] already implements the MCT. So, if you want =
to=20
use [1], all you need to implement is a libkcapi backend that just invokes =
the=20
ciphers as defined by the API in [1].

[1] https://github.com/smuellerDD/acvpparser

Ciao
Stephan