CSI-RFF: Leveraging Micro-Signals on CSI for RF Fingerprinting of Commodity WiFi
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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其它資訊
摘要This paper introduces CSI-RFF, a new framework that leverages micro-signals embedded within C hannel S tate I nformation (CSI) curves to realize R adio- F requency F ingerprinting of commodity off-the-shelf (COTS) WiFi devices for open-set authentication. The micro-signals that serve as RF fingerprints are termed “micro-CSI”. Through experimentation, we have found that the presence of micro-CSI can primarily be attributed to imperfections in the RF circuitry. Furthermore, this characteristic signal is detectable in WiFi 4/5/6 network interface cards (NICs). We have conducted further experiments to determine the most effective CSI collection configurations to stabilize micro-CSI. Yet, extracting micro-CSI for authentication purposes poses a significant challenge. This complexity arises from the fact that CSI measurements inherently include both micro-CSI and the distortions introduced by wireless channels. These two elements are intricately intertwined, making their separation non-trivial. To tackle this challenge, we have developed a signal space-based extraction technique for line-of-sight (LoS) scenarios, which can effectively separate the distortions caused by wireless channels and micro-CSI. Over the course of our comprehensive CSI data collection period extending beyond one year, we found that the extracted micro-CSI displays unique characteristics specific to each WiFi device and remains invariant over time. This establishes micro-CSI as a suitable candidate for device fingerprinting. Finally, we conduct a case study focusing on area access control for mobile robots. In particular, we applied our CSI-RFF framework to identify mobile robots operating in real-world indoor LoS environments based on their transmitted WiFi signals. To accomplish this, we have compared and employed anomaly detection algorithms for the authentication of 15 COTS WiFi 4/5/6 NICs that were carried by a mobile robot under both static and mobile conditions, maintaining an average sig...
著者Ruiqi Kong, He Chen
期刊名稱IEEE Transactions on Information Forensics and Security
出版年份2024
月份5
卷號19
出版社IEEE
頁次5301 - 5315
國際標準期刊號1556-6013
電子國際標準期刊號1556-6021
語言美式英語

上次更新時間 2024-12-08 於 10:48