Security and performance trade-off in KILAVI wireless sensor network

Authors:
Mikael Soini;Juha Kukkurainen;Lauri Sydänheimo
Affiliations:
Rauma Research Unit, Department of Electronics, Tampere University of Technology, Rauma, Finland;Rauma Research Unit, Department of Electronics, Tampere University of Technology, Rauma, Finland;Rauma Research Unit, Department of Electronics, Tampere University of Technology, Rauma, Finland
Venue:
ICCOMP'10 Proceedings of the 14th WSEAS international conference on Computers: part of the 14th WSEAS CSCC multiconference - Volume I
Year:
2010

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Abstract

Wireless sensor networks are typically used in different control and monitoring applications. In these applications resource-constrained sensor nodes gather information from the environment and possibly execute control commands based on the content of gathered information. The information transferred in a wireless sensor network can be very sensitive and therefore must be kept secret from outsiders. In this paper RC5 based encryption and CMAC authentication are used to obtain data confidentiality, freshness, replay protection, authentication, and integrity. These features enhance data security but can decrease sensor network operability because of added computation and communication load. This paper discusses the trade-offs between added security and sensor and sensor network performance. The focus is on how energy consumption and computation time are increased due to utilization of different security features and levels.