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List:       linux-kernel
Subject:    Re: Any work in implementing Secure IPC for Linux?
From:       Kristian =?iso-8859-1?q?S=F8rensen?= <ks () cs ! aau ! dk>
Date:       2005-05-09 18:44:29
Message-ID: 200505092044.29440.ks () cs ! aau ! dk
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On Monday 09 May 2005 19:54, Chris Friesen wrote:
> Kristian Sørensen wrote:
> >  By "secure IPC" is meaning a
> > security mechanism that provides a more fine granularity of specifying
> > who are allowed to send (or receive) messages... and maby also a way to
> > resolve the question of "Can I trust the message I received?"
>
> How about unix sockets?
> 	--you can have sockets in the filesystem namespace with regular file
> permissions to control who is allowed to send messages to particular
> addresses
This is the same problem: Basing access control on user and group is not 
enough - especially as the root-user can overrule any access control 
specified by the normal DAC file attributes.

> 	--you can authenticate who is sending the message using SCM_CREDENTIALS
I guess this poses the same problem as above?


KS


-- 
Kristian Sørensen
  The Umbrella Project  --  Security for Consumer Electronics
  Linnovative  --  www.linnovative.dk
  ks@linnovative.dk  --  +45 2972 3816
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