Re: Wanted: Secure-delete utility for Linux
Rik van Riel (H.H.vanRiel@phys.uu.nl)
Tue, 22 Dec 1998 22:13:13 +0100 (CET)
On Tue, 22 Dec 1998, Pauline Middelink wrote:
> On Tue, Dec 22, 1998 at 05:51:39PM +0100, Clifford Wolf wrote:
> > On Tue, 22 Dec 1998, Dave Cinege wrote:
> >
> > > > Actually, it's all-bits-zero, all-bits-one, all-bits-zero. This prevents
> > > > people from reading the previous data from residual magnetic fields underneath
> > > > a disk which has simply been wiped with zeroes, etc. The complete cycle for
> > > > each bit is enough to minimize this risk.
> > >
> > > Hmmm I guess we need a /dev/one? (Actually not a bad thing to have)
> >
> > IMHO the name /dev/one would be a bad idea. Becouse this could mean an
> > integer one which is 00000001 for 8-bit, 0000000000000001 for 16-bit, and
> > so on.
> >
> > I don't know a better name - but IMHO /dev/one would be a bad name.
>
> How about /dev/zeros?
'Safe' deletion consists of overwriting the file multiple
times, 3 times with random values, 3 times with zeros and
3 times with ones.
I guess we might as well do this in userspace :)
regards,
Rik -- the flu hits, the flu hits, the flu hits -- MORE
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