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SubjectRe: FWD: Re: Linux pipe question
Thanks for the reply!  

On Wed, Sep 20, 2000 at 07:29:06PM +0200, Jakob Østergaard wrote:
> On Wed, Sep 20, 2000 at 12:31:25PM -0400, Mike Panetta wrote:
> > Can anyone answer this?
> > I am not sure if unnamed pipes in linux
> > are pageable or not. If an unnamed pipe
> > could be paged out what could be done
> > to prevent that from happening?
>
> The pipe itself is not pageable, but the user programs
> will use buffers to actually use the pipe, and user programs
> are of course pageable.
>
> You might want to look into encrypted swap-space
> or at least using mlock() to lock the user programs in
> core. It depends on how secure you want it. Could someone
> actually access the swap space (eg. steal the disk), or
> could someone install compromised versions of the programs
> unnoticed ?
>
> Most programs just fill their buffers with random data or
> zeroes, after they're done with the confidential data.
>
> --
> ...............................................................
> : jakob@unthought.net : And I see the elder races, :
> :.........................: putrid forms of man :
> : Jakob Østergaard : See him rise and claim the earth, :
> : OZ9ABN : his downfall is at hand. :
> :.........................:............{Konkhra}...............:
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