Supporting Multilevel Security in Wireless Sensor NetworksReport
In this paper we introduce the concept of multilevel se- curity (MLS) to the field of wireless sensor networks (WSNs). As WSNs become more widely-used in mili- tary, commercial, and home environments securing the data in the network grows to be a very important issue. There are many applications, however, which require more than just protecting the data from the outside world. Just as in everyday life not every user has access to all the data, in WSNs it is sometimes necessary to secure some of the information even from �inside men�. Therefore, a multilevel system that would be able to ac- commodate the different sensitivity levels of the data as well as the different clearance levels and need-to-know of the users is needed.
To provide a better understanding of the cost intro- duced by security we studied three symmetric-key en- cryption algorithms - AES, RC5, and Skipjack. We measured their memory and power consumption on both MicaZ and TelosB sensor nodes. Using those results we have built the basis for an MLS environment to be used in WSNs. The MLS component we propose is simple, flexible, and adjustable to the WSN�s requirements and constraints.
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Lee, Jongdeog, Krasimira Kapitanova, and Sang Son. "Supporting Multilevel Security in Wireless Sensor Networks." University of Virginia Dept. of Computer Science Tech Report (2008).
University of Virginia, Department of Computer Science