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TRAIL: Topology Authentication in RPL - 2016

Author(s) Name:  Perrey, Heiner, Martin Landsmann, Osman Ugus, Thomas C. Schmidt, and Matthias W√§hlisch
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Conferrence name:  International Conference on Embedded Wireless Systems and Networks
Publisher name:  ACM
DOI:  10.1109/INFCOMW.2013.6970745
Research Area:  Internet of Things

The IPv6 Routing Protocol for Low-Power and Lossy Networks was recently introduced as the new routing standard for the Internet of Things. Although RPL defines basic security modes, it remains vulnerable to topological attacks which facilitate blackholing, interception, and resource exhaustion. We are concerned with analyzing the corresponding threats and protecting future RPL deployments from such attacks. Our contributions are twofold. First, we analyze the state of the art, in particular the protective scheme VeRA and present two new rank order attacks as well as extensions to mitigate them. Second, we derive and evaluate TRAIL, a generic scheme for topology authentication in RPL. TRAIL solely relies on the basic assumptions of RPL that (1) the root node serves as a trust anchor and (2) each node interconnects to the root in a straight hierarchy. Using proper reachability tests, TRAIL scalably and reliably identifies any topological attacker without strong cryptographic efforts.

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