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Short Summaries of Articles about Mathematics
in the Popular Press

"Chaos Keeps Data Under Wraps," by Alexander Hellemans. Science, 2 May 1997, page 679.

This article describes work by a group of researchers in France, who are developing a system to use chaos to protect data transmissions. Given data in the form of an optical signal, the system masks the data by adding chaotic flucutations in frequency. To an evesdropper, the signal would look like random noise. The receiver generates an identical copy of the chaotic part of the signal, and then subtracts it from the incoming signal to recover the original data. This system, which may see application in about 5 years, could provide a speedup over traditional ways of securing communications, which consume computer processing time for encoding and decoding.

--- Allyn Jackson

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