From: Makan Pourzandi <Makan.Pourzandi@ericsson.com>
To: Chris Wright <chrisw@osdl.org>
Cc: linux-kernel@vger.kernel.org,
Axelle Apvrille <axelle.apvrille@trusted-logic.fr>,
serue@us.ibm.com, david.gordon@ericsson.com, gaspoucho@yahoo.com
Subject: Re: [ANNOUNCE] Release Digsig 1.3.1: kernel module for run-time authentication of binaries
Date: Thu, 09 Sep 2004 13:31:36 -0400 [thread overview]
Message-ID: <41409378.5060908@ericsson.com> (raw)
In-Reply-To: <20040909092457.L1973@build.pdx.osdl.net>
Hi Chris,
Chris Wright wrote:
> * Makan Pourzandi (Makan.Pourzandi@ericsson.com) wrote:
>>
>>DSI development team would like to announce the release 1.3.1 of digsig.
...
>>
>>Changes from Digsig release 0.2 announced in this mailing list:
>>================================================================
>>
>> - the verification of signatures for the shared binaries has been
>> added.
>> - added support for caching of signatures
>> - added documentation for digsig
>> - added support for revoked signatures
>> - support to avoid vulnerability for rewrite of shared
>> libraries
>
>
> Could you elaborate on this one?
We realized that when a shared library is opened by a binary it can
still be modified. To solve the problem, we block the write access to
the shared binary while it is loaded.
>
>
>> - use sysfs to connect to the module instead of the char device
>> - code clean up, and some bug fixes
>>
>>Future works
>>=============
>>
>> - improving the caching and revocation: it is currently tested
>> and will be sent out soon after stability testing
>
>
> Should be helpful enough to cache result until thing's opened for
> writing, or is that what you're doing now?
>
This is what we're doing now, but we need to implement a hash table to
accelerate the lookup for the signatures.
Regards,
Makan
> thanks,
> -chris
--
Makan Pourzandi, Open Systems Lab
Ericsson Research, Montreal, Canada
*This email does not represent or express the opinions of Ericsson Inc.*
next prev parent reply other threads:[~2004-09-09 17:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-09 15:55 [ANNOUNCE] Release Digsig 1.3.1: kernel module for run-time authentication of binaries Makan Pourzandi
2004-09-09 16:24 ` Chris Wright
2004-09-09 17:23 ` Serge E. Hallyn
2004-09-09 17:42 ` Chris Wright
2004-09-09 18:43 ` Serge E. Hallyn
2004-09-09 17:31 ` Makan Pourzandi [this message]
2004-09-09 17:55 ` Chris Wright
2004-09-09 19:05 ` Serge E. Hallyn
2004-09-09 20:40 ` Makan Pourzandi
2004-09-09 21:03 ` Chris Wright
2004-09-09 21:45 ` Serge E. Hallyn
2004-09-10 21:28 ` Chris Wright
2004-09-10 20:53 ` Makan Pourzandi
2004-09-10 21:26 ` Chris Wright
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