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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:15:20
SDN (sdn@divcom.slimy.com)
Wed, 7 Oct 1998 10:31:03 -0700
On Wed, Oct 07, 1998 at 10:23:32AM -0400, David R. Conrad wrote:
> Sorry, more ignoring of the underlying crypto question.
>
> > 1.5) _Wipe_ the old file. (Write random data over all of the previeously
> > used bits of the old file N times.) Your OS may not allow you yo do this
> > cleanly without modifications to the OS, or other special measures.
>
> Your OS may also offer to do it for you. man 1 chattr if you're using
> Linux and ext2fs.
>
> chattr +s file
It only says it zeroes the blocks, which doesn't protect againts the
"take the disk drive apart and look at it with very expensive equipment"
attack.
It could probably be modified to scribble random data several times, but
there's no point for many threat models. Plus, there's no way to tell
if the current machine has the (hypothetical) more secure delete patch.
Jon Leonard
The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:15:20