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Secure and Self-stabilizing Clock Synchronization in Sensor Networks
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- Hoepman, Jaap-Henk (author)
- Radboud Universiteit,Radboud University,Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO),Netherlands Organisation for Applied Scientific Research (TNO)
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- Larsson, Andreas, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Schiller, Elad, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- (creator_code:org_t)
- Elsevier BV, 2010
- 2010
- English.
- In: Theoretical Computer Science. - : Elsevier BV. - 0304-3975. ; 412:40, s. 5631-5647
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- 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.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Keyword
- Secure and resilient computer systems
- Sensor-network systems
- Self-Stabilization
- Clock-synchronization
Publication and Content Type
- art (subject category)
- ref (subject category)
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