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Anti-Spoofing for Single-Antenna Devices using Rotational Channel State Information

Authors:
Avishek Mukherjee
Tyler Moody
Mason Strawn
Manish Osti

Keywords: Channel State Information, Wireless Networks, Anti-Spoofing, Wireless Security.

Abstract:
In this paper, we investigate the efficacy of using rotational Channel State Information (CSI) on Anti-Spoofing methods in indoor wireless networks. Physical layer information like the CSI often acts like a fingerprint for different locations. Most Anti-Spoofing (AS) methods leverage this uniqueness to detect spoofed packets originating from an attacker that claims to be a genuine user. However, due to the sparsity of wireless channels, there are times when the CSI from different locations may look similar and AS systems may fail to detect a spoofed packet. We propose Rotational Channel State Information - Anti-Spoofing (RCSI-AS), that uses multiple CSI measurements by rotating the antenna on an Access Point (AP) at different angles to greatly improve the detection of spoofed packets. We conducted real world experiments and found that RCSI-AS can detect spoofed packets over 99.6% of the time when using multiple angular configurations at the Access Point(AP) and maintains a low false positive ratio when comparing packets from the same user.

Pages: 8 to 13

Copyright: Copyright (c) IARIA, 2023

Publication date: March 13, 2023

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-68558-060-5

Location: Barcelona, Spain

Dates: from March 13, 2023 to March 17, 2023