lkml.org 
[lkml]   [2002]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: secure erasure of files?
On Tue, 12 Feb 2002, Roy Sigurd Karlsbakk wrote:

> Does anyone know if it'll be hard to enable a <em>secure</em> deletion of
> files? What I mean is not merely overwriting it with NULLs, but rather
> using a more sophisticated overwrite, like the IBAS ExpertEraser software
> (http://www.ibas.com/erasure/)
>
> Is this hard/possible/doable?

If you want to prevent casual reads with user tools which don't physically
destroy the hardware, a single overwrite is probablt fine. If you think
someone would want the info enough to take the drive apart, encrypt
everything including swap and tmp, using DES3 or similar extremely hard
code.

You have to know your exposure, who will try to recover the data and how
hard they will try.

--
bill davidsen <davidsen@tmr.com>
CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:24    [W:0.090 / U:16.144 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site