netdev - Re: [PATCH net-next] [RESEND] wireguard: disable in FIPS mode

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]

Date:   Thu, 8 Apr 2021 14:52:31 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     Netdev <netdev@...r.kernel.org>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Ondrej Mosnacek <omosnace@...hat.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Subject: Re: [PATCH net-next] [RESEND] wireguard: disable in FIPS mode

On Wed, Apr 07, 2021 at 03:15:51PM -0600, Jason A. Donenfeld wrote:
> Hi Hangbin,
> 
> On Wed, Apr 7, 2021 at 5:39 AM Hangbin Liu <liuhangbin@...il.com> wrote:
> >
> > As the cryptos(BLAKE2S, Curve25519, CHACHA20POLY1305) in WireGuard are not
> > FIPS certified, the WireGuard module should be disabled in FIPS mode.
> 
> I'm not sure this makes so much sense to do _in wireguard_. If you
> feel like the FIPS-allergic part is actually blake, 25519, chacha, and
> poly1305, then wouldn't it make most sense to disable _those_ modules
> instead? And then the various things that rely on those (such as
> wireguard, but maybe there are other things too, like
> security/keys/big_key.c) would be naturally disabled transitively?

Hi Jason,

I'm not familiar with the crypto code. From wg_noise_init() it looks the init
part is in header file. So I just disabled wireguard directly.

For disabling the modules. Hi Ondrej, do you know if there is any FIPS policy
in crypto part? There seems no handler when load not allowed crypto modules
in FIPS mode.

BTW, I also has a question, apart from the different RFC standard, what's the
relation/difference between crypto/chacha20poly1305.c and lib/crypto/chacha20poly1305.c?

Thanks
Hangbin