Feasible Chaotic Encryption - Physics News Update 619 (fwd)

[Sean McGrath]

---------- Forwarded message ----------
Date: Fri, 3 Jan 2003 12:37:30 -0500
From: physnews at aip.org
To: sean at manybits.net
Subject: Physics News Update 619

PHYSICS NEWS UPDATE
The American Institute of Physics Bulletin of Physics News
Number 619 January 3, 2003   by Phillip F. Schewe, Ben Stein, and James
Riordon
[...]

FEASIBLE CHAOTIC ENCRYPTION.   Encryption schemes that hide messages in
chaotic signals have attracted attention in recent years as a means to
transmit information securely (Update 170, 361), but most work has been
either theoretical or strictly limited to laboratory experiments. Now a
group of researchers in Beijing have managed to demonstrate chaotically
encrypted, two-way voice transmission through the Beijing Normal University
computer network. With a 32-bit encryption structure, a 750 MHz personal
computer can encode information at speeds comparable to the widely
recognized Advanced Encryption Standard, and support voice communication at
typical telephone speeds and quality. While no encryption technique is
absolutely impenetrable, the researchers (Hu Gang, Beijing Normal
University, hugang at sun.ihep.ac.cn, 86-10-62208420) explain that their
communication scheme is reasonably secure (it would take an intruder armed
with a personal computer more than a million times the lifetime of the
universe to break the code) as well as being feasible in realistic,
commercial settings. (S. Wang et al., Physical Review E, December 2002.)

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