[Cryptography] Rubber-hose resistance?

[Tom Mitchell]

On Wed, Dec 20, 2017 at 2:27 PM, Jerry Leichter <leichter at lrw.com> wrote:

> > Before you leave to return home, you need to delete a
>
.....

> > $ cat /dev/urandom >tmp1
> > # Now wait until you run out of disk space.
> This of course may not do what you think on an SSD - which it probably is
> these days.
> ....
> >
> > $ rm tmp1
> >
> > # And thus reclaim your disk space.
> What attack will filling the disk with random bits stop that simply
> zeroing the disk won't stop?  If you're worried about national-lab level
> attacks ... who really knows what they are?


Zeros allow digging deeper into noise and are a 'simple' known.
They present a signal that can be subtracted with more precision from the
analog data stream than some.
The a pass of random followed by zeros would be difficult to dig out.
Synchronous detection is a powerful tool as recovering signals from the
Voyager spacecraft  demonstrates.
https://voyager.jpl.nasa.gov/mission/did-you-know/
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