Paul Repacholi wrote:
...
But you don't have to fake the file, just fake the signals into the
FAI logger and use a pressure chamber.

Some one should submit a `suitable' claim file, flown at 100K' with
all the security intact.

Logging raw satelite data and carrier phase would be a bit more
secure, it could be post proscessed when the prescision ephemeris data
is available a few days later. It would be REALLY hard to predict that!
...


Todd Pattist wrote:
...
He doesn't have to fake it. When you buy an approved FR, it
comes with software and hardware right inside the FR that
will create the digital signature he needs. All the fancy
cryptography we use is based on keeping the secret key a
secret, but the way we use it, we have to put the secret key
and the software and hardware that use that key to create
the digital signature inside the box the pilot owns. The
security boils down to a switch inside a box closed with
some screws.
...

But in these both cases we are no more at the level of what
a 12 years old boy can do with his home computer.