From Key Predistribution to Key Redistribution

  • Jacek Cichoń
  • Zbigniew Gołębiewski
  • Mirosław Kutyłowski
Conference paper

DOI: 10.1007/978-3-642-16988-5_9

Part of the Lecture Notes in Computer Science book series (LNCS, volume 6451)
Cite this paper as:
Cichoń J., Gołębiewski Z., Kutyłowski M. (2010) From Key Predistribution to Key Redistribution. In: Scheideler C. (eds) Algorithms for Sensor Systems. ALGOSENSORS 2010. Lecture Notes in Computer Science, vol 6451. Springer, Berlin, Heidelberg

Abstract

One of crucial disadvantages of key predistribution schemes for ad hoc networks is that if devices A and B use a shared key K to determine their session keys, then any adversarial device that holds K can impersonate A against B (or vice versa). Also, the adversary can eavesdrop communication between A and B for the lifetime of the system.

We develop a dynamic scheme where a system provider periodically broadcasts random temporal keys (e.g. via a GSM network) encrypted with keys from the main predistribution pool. Shared temporal keys (and not the keys from the main pool) are used to establish session keys. The trick is that the scheme broadcast is organized in such a way that with a high probability two devices share much more temporal keys than the keys from the main pool of keys. It is a kind of paradox, but this makes it possible not only to protect communication against an adversary that has collected a large fraction of keys from the main pool, but also makes the system well suited for authentication purposes.

Keywords

key predistribution wireless ad hoc network eavesdropping attack detection dynamic key management 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Jacek Cichoń
    • 1
  • Zbigniew Gołębiewski
    • 1
  • Mirosław Kutyłowski
    • 1
  1. 1.Institute of Mathematics and Computer ScienceWrocław University of TechnologyWrocławPoland

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