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Chip Hides Wireless Messages in Plain Sight

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The signal is clear for the intended recipient but not for others.

Princeton University researchers have developed a method to foil eavesdroppers by building security into the physical nature of wireless transmissions.

Credit: Ella Maru Studio/Princeton University

Princeton University researchers have developed a millimeter-wave wireless microchip that can thwart interception of wireless transmissions without affecting 5G network latency, efficiency, and speed.

The technique used by the chip prevents eavesdropping by chopping a message into randomly sized segments, and assigning different segments to subsets of antennas in an array.

The researchers coordinated the transmission so only a receiver in the desired direction could reconstruct the signal in the right order; to other receivers, it would resemble noise.

Princeton's Kaushik Sengupta said of the technique, "You can still encrypt on top of it, but you can reduce the burden on encryption with an additional layer of security. It is a complementary approach."

From Princeton University Electrical and Computer Engineering News
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Abstracts Copyright © 2021 SmithBucklin, Washington, DC, USA


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