From: Sasha Levin <levinsasha928@gmail.com>
To: Steve Grubb <sgrubb@redhat.com>
Cc: Ted Ts'o <tytso@mit.edu>, Jarod Wilson <jarod@redhat.com>,
linux-crypto@vger.kernel.org, Matt Mackall <mpm@selenic.com>,
Neil Horman <nhorman@redhat.com>,
Herbert Xu <herbert.xu@redhat.com>,
Stephan Mueller <stephan.mueller@atsec.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] random: add blocking facility to urandom
Date: Thu, 08 Sep 2011 00:38:31 +0300 [thread overview]
Message-ID: <1315431511.3576.66.camel@lappy> (raw)
In-Reply-To: <201109071728.31162.sgrubb@redhat.com>
On Wed, 2011-09-07 at 17:28 -0400, Steve Grubb wrote:
> On Wednesday, September 07, 2011 05:10:27 PM Sasha Levin wrote:
> > > > > > Something similar probably happens for getting junk on disks before
> > > > > > creating an encrypted filesystem on top of them.
> > > > >
> > > > > During system install, this sysctl is not likely to be applied.
> > > >
> > > > It may happen at any time you need to create a new filesystem, which
> > > > won't necessarily happen during system install.
> > > >
> > > > See for example the instructions on how to set up a LUKS filesystem:
> > > > https://wiki.archlinux.org/index.php/System_Encryption_with_LUKS#Prepar
> > > > atio n_and_mapping
> > >
> > > Those instructions might need to be changed. That is one way of many to
> > > get random numbers on the disk. Anyone really needing the security to
> > > have the sysctl on will also probably accept that its doing its job and
> > > keeping the numbers random. Again, no effect unless you turn it on.
> >
> > There are bunch of other places that would need to be changed in that
> > case :)
> >
> > Why not implement it as a user mode CUSE driver that would
> > wrap /dev/urandom and make it behave any way you want to? why push it
> > into the kernel?
>
> For one, auditing does not work for FUSE or things like that. We have to be able to
> audit who is using what. Then there are the FIPS-140 requirements and this will spread
> it. There are problems sending crypto audit events from user space, too.
auditd doesn't work with FUSE? afaik it should, FUSE is a filesystem
like any other.
--
Sasha.
next prev parent reply other threads:[~2011-09-07 21:38 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-02 14:37 [PATCH] random: add blocking facility to urandom Jarod Wilson
2011-09-05 2:36 ` Sandy Harris
2011-09-06 14:09 ` Stephan Mueller
2011-09-07 17:38 ` Jarod Wilson
2011-09-07 18:12 ` Sasha Levin
2011-09-07 18:26 ` Jarod Wilson
2011-09-07 19:05 ` Sasha Levin
2011-09-07 19:30 ` Jarod Wilson
2011-09-07 20:00 ` Sasha Levin
2011-09-07 19:35 ` Neil Horman
2011-09-07 19:27 ` Ted Ts'o
2011-09-07 19:36 ` Jarod Wilson
2011-09-08 2:43 ` Sandy Harris
2011-09-07 19:49 ` David Miller
2011-09-07 20:02 ` Steve Grubb
2011-09-07 20:23 ` Sasha Levin
2011-09-07 20:30 ` Steve Grubb
2011-09-07 20:37 ` Sasha Levin
2011-09-07 20:56 ` Steve Grubb
2011-09-07 21:10 ` Sasha Levin
2011-09-07 21:28 ` Steve Grubb
2011-09-07 21:38 ` Sasha Levin [this message]
2011-09-07 21:35 ` Jarod Wilson
2011-09-07 21:43 ` Steve Grubb
2011-09-07 22:46 ` Sven-Haegar Koch
2011-09-08 7:21 ` Sasha Levin
2011-09-07 23:57 ` Neil Horman
2011-09-08 6:41 ` Tomas Mraz
2011-09-08 12:52 ` Neil Horman
2011-09-08 13:11 ` Steve Grubb
2011-09-08 13:49 ` Neil Horman
2011-09-09 2:21 ` Sandy Harris
2011-09-09 13:04 ` Steve Grubb
2011-09-09 16:25 ` Ted Ts'o
2011-09-09 21:27 ` Thomas Gleixner
2011-09-12 13:56 ` Jarod Wilson
2011-09-13 10:58 ` Peter Zijlstra
2011-09-13 12:18 ` Jarod Wilson
2011-09-11 2:05 ` Valdis.Kletnieks
2011-09-12 13:55 ` Jarod Wilson
2011-09-12 16:58 ` Valdis.Kletnieks
2011-09-12 18:26 ` Jarod Wilson
2011-09-07 20:33 ` Neil Horman
2011-09-07 20:48 ` Steve Grubb
2011-09-07 21:18 ` Ted Ts'o
2011-09-07 21:27 ` Stephan Mueller
2011-09-07 21:38 ` Ted Ts'o
2011-09-08 8:44 ` Christoph Hellwig
2011-09-08 11:48 ` Steve Grubb
2011-09-08 16:13 ` David Miller
2011-09-09 19:08 ` Eric Paris
2011-09-09 19:12 ` Neil Horman
2011-09-08 8:42 ` Christoph Hellwig
2011-09-07 21:20 ` Nikos Mavrogiannopoulos
2011-09-08 8:41 ` Christoph Hellwig
2011-09-12 14:02 ` Jarod Wilson
2011-09-12 14:58 ` Neil Horman
2011-09-12 17:06 ` Mark Brown
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