Proximity-based authentication of mobile devices

Authors:
Adin Scannell;Alexander Varshavsky;Anthony LaMarca;Eyal De Lara
Affiliations:
Department of Computer Science, University of Toronto, 40 St. George Street, Toronto, M5S 2E4 Ontario, Canada.;AT&T Labs Research, 180 Park Ave. Building 103, Florham Park, 07932 NJ, USA.;Intel Research Seattle, 1100 NE 45th St., Sixth Floor, Seattle, 98105 WA, USA.;Department of Computer Science, University of Toronto, 40 St. George Street, Toronto, M5S 2E4 Ontario, Canada
Venue:
International Journal of Security and Networks
Year:
2009

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Abstract

Securing interactions between devices that do not know each other a priori is an important and challenging task. We present Amigo, a technique to authenticate co-located devices using knowledge of their shared radio environment as proof of physical proximity. We present evaluation results that show that our technique is robust against a range of passive and active attacks. The key advantages of our technique are that it does not require any additional hardware to be present on the devices beyond the radios that are already used for communication, it does not require user involvement to verify the validity of the authentication process, and it is not vulnerable to eavesdropping.