%0 Conference Proceedings
%T Revisiting Two-Hop Distance-Bounding Protocols: Are You Really Close Enough?
%+ University of the Aegean
%+ Chalmers University of Technology [Göteborg]
%A Kaloudi, Nektaria
%A Mitrokotsa, Aikaterini
%Z Part 5: Protocols and Algorithms
%< avec comité de lecture
%( Lecture Notes in Computer Science
%B 11th IFIP International Conference on Information Security Theory and Practice (WISTP)
%C Heraklion, Greece
%Y Gerhard P. Hancke
%Y Ernesto Damiani
%I Springer International Publishing
%3 Information Security Theory and Practice
%V LNCS-10741
%P 177-188
%8 2017-09-28
%D 2017
%R 10.1007/978-3-319-93524-9_12
%K Distance-bounding
%K Authentication
%K Relay attacks
%Z Computer Science [cs]Conference papers
%X The emergence of ubiquitous computing has led to multiple heterogeneous devices with increased connectivity. In this communication paradigm everything is inter-connected and proximity-based authentication is an indispensable requirement in multiple applications including contactless payments and access control to restricted services/places. Distance-bounding (DB) protocols is the main approach employed to achieve accurate proximity-based authentication. Traditional distance-bounding requires that the prover and the verifier are in each other’s communication range. Recently, Pagnin et al. have proposed a two-hop DB protocol that allows proximity-based authentication, when the prover and the verifier need to rely on an intermediate untrusted party (linker). In this paper, we investigate further the topic of two-hop distance-bounding. We analyse the security of the Pagnin et al. protocol for internal adversaries and we investigate the impact of the position of the linker in the distance-bounding process. We propose a new two-hop DB protocol that is more lightweight and avoids the identified problems. Finally, we extend the protocol to the multi-hop setting and we provide a detailed security analysis for internal adversaries.
%G English
%Z TC 11
%Z WG 11.2
%2 https://inria.hal.science/hal-01875523/document
%2 https://inria.hal.science/hal-01875523/file/469589_1_En_12_Chapter.pdf
%L hal-01875523
%U https://inria.hal.science/hal-01875523
%~ IFIP-LNCS
%~ IFIP
%~ IFIP-TC
%~ IFIP-TC11
%~ IFIP-WISTP
%~ IFIP-WG11-2
%~ IFIP-LNCS-10741