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: <1417958080.17658.32.camel@localhost>
Date:	Sun, 07 Dec 2014 14:14:40 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	George Spelvin <linux@...izon.com>
Cc:	herbert@...dor.apana.org.au, dborkman@...hat.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, tgraf@...g.ch
Subject: Re: Where exactly will arch_fast_hash be used

Hi,

On So, 2014-12-07 at 00:20 -0500, George Spelvin wrote:
> If you want DoS-resistant hash tables, I'm working on adding SipHash
> to the kernel.
> 
> This is a keyed pseudo-random function designed specifically for that
> application.  I am starting with ext4 directory hashes, and then intended
> to expand to secure sequence numbers (since it's far faster than MD5).

Please consider xfs, too.
AFAIK xfs doesn't seed their hashing so far and the hashing function is
pretty weak. One example:
http://marc.info/?l=linux-xfs&m=139590613002926&w=2

> (I'm trying to figure out a good interface, since the crypto API
> is a bit heavy for something to heavily optimized.)

Ack. If we want to use it in the networking stack we should be able to
use it without a dependency to the crypto framework.

Bye,
Hannes


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ