[Cryptography] Public-key auth as envisaged by first-year science students

[Dave Howe]

On 12/08/2016 13:13, Michael Kjörling wrote:
> On 12 Aug 2016 10:54 +0100, from davehowe.pentesting at gmail.com (Dave Howe):
>> A point to point link, by
>> contrast, could have this property, but only if Mallory's intercept dish
>> pair isn't sufficient to block the signal path.
> Good points all. About that last; for anything below several
> gigahertz, a dish antenna with sufficient gain (directionality) to
> matter would be very large; quite likely large enough to easily be
> seen at the distances under consideration. So it wouldn't exactly be a
> _stealthy_ device.
A lot of commercial point to point radio links do seem to share a mast
with other providers; you could of course hack the connection from the
dish itself (which tends to be mounted out on an open framework tower)
and the digital kit (which tends to live safely in a brick room at the
base of the mast).  The game changes once you get to the microwave stuff
of course...