The EU Galileo navigation satellite uses a set of pseudo-random numbers to
secure access to its data. Galileo is partially investor-funded; part of
the business model is to sell access to the data. Some researchers at
Cornell took a different approach -- they cryptanalyzed the algorithm...
Better yet, they got an opinion from their university lawyer that the DMCA
didn't apply. See http://www.newswise.com/articles/view/521790/?sc=rsla
for details.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
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