Comparison of innovative signature algorithms for WSNs

  • Authors:
  • Benedikt Driessen;Axel Poschmann;Christof Paar

  • Affiliations:
  • escrypt GmbH, Bochum, Germany;Ruhr-University Bochum, Bochum, Germany;Ruhr-University Bochum, Bochum, Germany

  • Venue:
  • WiSec '08 Proceedings of the first ACM conference on Wireless network security
  • Year:
  • 2008

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Abstract

For many foreseen applications of Wireless Sensor Networks (WSN) - for example monitoring the structural health of a bridge - message integrity is a crucial requirement. Usually, security services such as message integrity are realized by symmetric cryptography only, because asymmetric cryptography is often stated as impracticable for WSN. However, the proposed solutions for symmetric key establishment introduce a significant computation, storage, and - most important - communication overhead. Digital signatures and key-exchange based on asymmetric algorithms would be very valuable though. In the literature nearly only RSA and ECC are implemented and compared for sensor nodes, though there exist a variety of innovative asymmetric algorithms. To close this gap, we investigated the efficiency and suitability of digital signature algorithms based on innovative asymmetric primitives for WSN. We chose XTR-DSA and NTRUSign and implemented both (as well as ECDSA) for MICAz motes.