Actually, I don't know if they are still adding jitter. The original thread was started by someone else who proposed using jitter. I believe the commercial GPS systems are currently limited to 30ft resolutions (the resolution can be improved futher by processing the output of several gps receivers). phillip -----Original Message----- From: ssyreeni@cc.helsinki.fi [mailto:ssyreeni@cc.helsinki.fi]On Behalf Of Sampo Syreeni Sent: Thursday, February 22, 2001 10:13 AM To: Phillip H. Zakas Cc: cypherpunks@Algebra.COM Subject: RE: The Key Vanishes: Scientist Outlines Unbreakable Code On Wed, 21 Feb 2001, Phillip H. Zakas wrote: [Snip on GPS randomization]
as far as how random these bits are, i don't know if the entropy is very good, and i don't know if the # of bits is enough to encrypt a message.
Are you sure they are still adding jitter to GPS? Sampo Syreeni <decoy@iki.fi>, aka decoy, student/math/Helsinki university