Abstract
Wireless key exchange on the physical layer is a key exchange protocol independent of computational assumptions. It relies only on the physical properties of the wireless channels to generate a common secret key between two parties. Precise conditions, however, for such a key exchange to be secure remain unclear. An argument why unconditional security does not hold for general scenarios is provided. Finally, a novel side-channel attack against such key exchange schemes is described and experimentally validated.
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Döttling, N., Lazich, D., Müller-Quade, J., de Almeida, A.S. (2011). Vulnerabilities of Wireless Key Exchange Based on Channel Reciprocity. In: Chung, Y., Yung, M. (eds) Information Security Applications. WISA 2010. Lecture Notes in Computer Science, vol 6513. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17955-6_15
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DOI: https://doi.org/10.1007/978-3-642-17955-6_15
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