Re: Galileo codes cracked (Security by obscurity fails again)

Jan Panteltje wrote:
<quote> "We were told that cracking the encryption of creative content, like
music or a movie, is illegal, but the encryption used by a navigation signal
is fair game,"
</quote>

This looks like a FUD battle between GPS and Galileo.

No encryption was cracked. These guys only determined the
short pseudo-random sequence used for the spread-spectrum
modulation [1] of the unprotected L1F signal. This sequence
was intended to be public evenually (and now is).

If someone wants to "crack" something, they should look at
the protected L1P, E6C and E6P signals, or get their hands
on a military-grade receiver and extract the algorithms
from the tamper-resistant chips. Good luck.

AC

[1] http://en.wikipedia.org/wiki/Direct-sequence_spread_spectrum
.

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