linux-kernel - Re: [PATCH 07/18] crypto: testmgr - add DH RFC 3526 modp2048 test vector

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Date:   Wed, 1 Dec 2021 08:25:22 +0100
From:   Hannes Reinecke <hare@...e.de>
To:     Nicolai Stange <nstange@...e.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Stephan Müller <smueller@...onox.de>,
        Torsten Duwe <duwe@...e.de>, Zaibo Xu <xuzaibo@...wei.com>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        David Howells <dhowells@...hat.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        qat-linux@...el.com, keyrings@...r.kernel.org
Subject: Re: [PATCH 07/18] crypto: testmgr - add DH RFC 3526 modp2048 test
 vector

On 12/1/21 1:48 AM, Nicolai Stange wrote:
> The previous patch introduced support for the safe-prime groups specified
> by RFC 3526. In order to test this functionality, add a corresponding test
> vector to testmgr. The test data has been generated with OpenSSL.
> 
> Note that this new entry provides test coverage for the recent change to
> crypto_dh_encode_key(), which made it to skip the serialization of domain
> parameters for known groups, i.e. those with
> ->group_id != dh_group_id_unknown.
> 
> Moreover, a future patch will make the DH implementation to reject domain
> parameters not corresponding to some safe-prime group approved by
> SP800-56Arev3 in FIPS mode and the existing DH test vectors don't qualify.
> So this patch here will ensure that there's still some suitable test vector
> available.
> 
> Signed-off-by: Nicolai Stange <nstange@...e.de>
> ---
>   crypto/testmgr.h | 92 ++++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 92 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@...e.de                              +49 911 74053 688
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