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        Relay-proof channels using UWB lasers

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        Final Accepted Version (PDF, 76Kb)
        Author
        Christianson, B.
        Shafarenko, Alex
        Stajano, Frank
        Wong, Ford-Long
        Attention
        2299/15345
        Abstract
        Alice is a hand-held device. Bob is a device providing a service, such as an ATM, an automatic door, or an anti-aircraft gun pointing at the gyro-copter in which Alice is travelling. Bob and Alice have never met, but share a key, which Alice uses to request a service from Bob (dispense cash, open door, don't shoot). Mort pretends to Bob that she is Alice, and her accomplice Cove pretends to Alice that he is Bob. Mort and Cove relay the appropriate challenges and responses to one another over a channel hidden from Alice and Bob. Meanwhile Alice waits impatiently in front of a different ATM, or the wrong door, or another gun. How can such an attack be prevented?
        Publication date
        2014
        Published in
        Security Protocols XVIII
        Published version
        https://doi.org/10.1007/978-3-662-45921-8_8
        Other links
        http://hdl.handle.net/2299/15345
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        School of Computer Science
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