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: <1d8eb859-1d41-32e1-98b8-3ddd60e2e0ab@suse.de>
Date:   Wed, 1 Dec 2021 08:34:16 +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 17/18] crypto: dh - try to match domain parameters to a
 known safe-prime group

On 12/1/21 1:48 AM, Nicolai Stange wrote:
> A subsequent patch will make the DH implementation to reject any input
> domain parameter set with ->group_id == dh_group_id_unknown in FIPS mode.
> However, as the keyctl(KEYCTL_DH_COMPUTE) implementation simply passes
> forward keys from userspace, it does not (and cannot) set ->group_id to
> anything else than dh_group_id_unknown.
> 
> In order to still allow for keyctl(KEYCTL_DH_COMPUTE) to work on approved
> domain parameters passed in from userspace in FIPS mode, make
> crypto_dh_decode_key() to compare them against any of the known groups and
> set ->group_id upon having found a match, if any.
> 
> Signed-off-by: Nicolai Stange <nstange@...e.de>
> ---
>   crypto/dh_helper.c | 33 +++++++++++++++++++++++++++++++++
>   1 file changed, 33 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@...e.de                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ