Secure and Self-stabilizing Clock Synchronization in Sensor Networks
Artikel i vetenskaplig tidskrift, 2010

In sensor networks, correct clocks have arbitrary starting offsets and nondeterministic fluctuating skews. We consider an adversary that aims at tampering with the clock synchronization by intercepting messages, replaying intercepted messages (after the adversary’s choice of delay), and capturing nodes (i.e., revealing their secret keys and impersonating them). We present an efficient clock sampling algorithm which tolerates attacks by this adversary, collisions, a bounded amount of losses due to ambient noise, and a bounded number of captured nodes that can jam, intercept, and send fake messages. The algorithm is self-stabilizing, so if these bounds are temporarily violated, the system can efficiently stabilize back to a correct state. Using this clock sampling algorithm, we construct the first self-stabilizing algorithm for secure clock synchronization in sensor networks that is resilient to the aforementioned adversarial attacks.

Secure and resilient computer systems

Sensor-network systems

Self-Stabilization

Clock-synchronization

Författare

Jaap-Henk Hoepman

Radboud Universiteit

Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO)

Andreas Larsson

Chalmers, Data- och informationsteknik, Nätverk och system

Elad Schiller

Chalmers, Data- och informationsteknik, Nätverk och system

Philippas Tsigas

Chalmers, Data- och informationsteknik, Nätverk och system

Theoretical Computer Science

0304-3975 (ISSN)

40 5631-5647

Styrkeområden

Informations- och kommunikationsteknik

Transport

Building Futures (2010-2018)

Ämneskategorier

Datavetenskap (datalogi)

DOI

10.1016/j.tcs.2010.04.012

Mer information

Senast uppdaterat

2018-04-10