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From: Nicolai Stange <nstange@suse.de>
To: Hannes Reinecke <hare@suse.de>
Cc: "Nicolai Stange" <nstange@suse.de>,
	"Herbert Xu" <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	"Stephan Müller" <smueller@chronox.de>,
	"Torsten Duwe" <duwe@suse.de>, "Zaibo Xu" <xuzaibo@huawei.com>,
	"Giovanni Cabiddu" <giovanni.cabiddu@intel.com>,
	"David Howells" <dhowells@redhat.com>,
	"Jarkko Sakkinen" <jarkko@kernel.org>,
	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
	qat-linux@intel.com, keyrings@vger.kernel.org
Subject: Re: [PATCH 03/18] crypto: dh - optimize domain parameter serialization for well-known groups
Date: Thu, 09 Dec 2021 10:08:05 +0100	[thread overview]
Message-ID: <87wnkervre.fsf@suse.de> (raw)
In-Reply-To: <418bccca-9d84-76b3-1f87-03b677688ca4@suse.de> (Hannes Reinecke's message of "Wed, 1 Dec 2021 08:17:22 +0100")

Hannes Reinecke <hare@suse.de> writes:

> On 12/1/21 1:48 AM, Nicolai Stange wrote:
>> diff --git a/crypto/dh_helper.c b/crypto/dh_helper.c
>> index aabc91e4f63f..a6c9389d8219 100644
>> --- a/crypto/dh_helper.c
>> +++ b/crypto/dh_helper.c
>> @@ -10,7 +10,32 @@
>>   #include <crypto/dh.h>
>>   #include <crypto/kpp.h>
>>   -#define DH_KPP_SECRET_MIN_SIZE (sizeof(struct kpp_secret) + 3 *
>> sizeof(int))
>> +#define DH_KPP_SECRET_MIN_SIZE (sizeof(struct kpp_secret) + \
>> +				sizeof(enum dh_group_id) + 3 * sizeof(int))
>
> That is not a good practise; 'enum' doesn't have a defined size, and
> will typically default to 'unsigned int'.
> But this might well be compiler dependent, so I suggest using a fixes
> size here.

Good point, in particular as a certain encoding is assumed for the test
vectors. Changed in v2.

Thanks,

Nicolai

-- 
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg), GF: Ivo Totev

  reply	other threads:[~2021-12-09  9:08 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-01  0:48 [PATCH 00/18] crypto: dh - infrastructure for NVM in-band auth and FIPS conformance Nicolai Stange
2021-12-01  0:48 ` [PATCH 01/18] crypto: dh - remove struct dh's ->q member Nicolai Stange
2021-12-01  7:11   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 02/18] crypto: dh - constify struct dh's pointer members Nicolai Stange
2021-12-01  7:13   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 03/18] crypto: dh - optimize domain parameter serialization for well-known groups Nicolai Stange
2021-12-01  7:17   ` Hannes Reinecke
2021-12-09  9:08     ` Nicolai Stange [this message]
2021-12-01  0:48 ` [PATCH 04/18] crypto: dh - introduce RFC 7919 safe-prime groups Nicolai Stange
2021-12-01  7:23   ` Hannes Reinecke
2021-12-09  9:10     ` Nicolai Stange
2021-12-01  0:48 ` [PATCH 05/18] crypto: testmgr - add DH RFC 7919 ffdhe2048 test vector Nicolai Stange
2021-12-01  7:24   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 06/18] crypto: dh - introduce RFC 3526 safe-prime groups Nicolai Stange
2021-12-01  7:24   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 07/18] crypto: testmgr - add DH RFC 3526 modp2048 test vector Nicolai Stange
2021-12-01  7:25   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 08/18] crypto: testmgr - run only subset of DH vectors based on config Nicolai Stange
2021-12-01  7:28   ` Hannes Reinecke
2021-12-09  9:18     ` Nicolai Stange
2021-12-01  0:48 ` [PATCH 09/18] crypto: dh - implement private key generation primitive Nicolai Stange
2021-12-01  7:28   ` Hannes Reinecke
2021-12-05  5:52   ` Stephan Müller
2021-12-08  6:20     ` Nicolai Stange
2021-12-08  7:16       ` Stephan Mueller
2021-12-01  0:48 ` [PATCH 10/18] crypto: dh - introduce support for ephemeral key generation to dh-generic Nicolai Stange
2021-12-01  7:29   ` Hannes Reinecke
2021-12-05  6:11   ` Stephan Müller
2021-12-08  6:32     ` Nicolai Stange
2021-12-01  0:48 ` [PATCH 11/18] crypto: dh - introduce support for ephemeral key generation to hpre driver Nicolai Stange
2021-12-01  7:30   ` Hannes Reinecke
2021-12-05  6:11   ` Stephan Müller
2021-12-01  0:48 ` [PATCH 12/18] crypto: dh - introduce support for ephemeral key generation to qat driver Nicolai Stange
2021-12-01  7:30   ` Hannes Reinecke
2021-12-05  6:11   ` Stephan Müller
2021-12-01  0:48 ` [PATCH 13/18] crypto: testmgr - add DH test vectors for key generation Nicolai Stange
2021-12-01  7:31   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 14/18] lib/mpi: export mpi_rshift Nicolai Stange
2021-12-01  7:32   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 15/18] crypto: dh - store group id in dh-generic's dh_ctx Nicolai Stange
2021-12-01  7:32   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 16/18] crypto: dh - calculate Q from P for the full public key verification Nicolai Stange
2021-12-01  7:33   ` Hannes Reinecke
2021-12-05  6:07   ` Stephan Müller
2021-12-08  6:41     ` Nicolai Stange
2021-12-01  0:48 ` [PATCH 17/18] crypto: dh - try to match domain parameters to a known safe-prime group Nicolai Stange
2021-12-01  7:34   ` Hannes Reinecke
2021-12-01  0:48 ` [PATCH 18/18] crypto: dh - accept only approved safe-prime groups in FIPS mode Nicolai Stange
2021-12-01  7:34   ` Hannes Reinecke
2021-12-09  9:26     ` Nicolai Stange
2021-12-02  3:48 [PATCH 03/18] crypto: dh - optimize domain parameter serialization for well-known groups kernel test robot
2021-12-06 19:01 kernel test robot

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