Autor: | E. Blaß, J. Wilke, M. Zitterbart | Links: | DownloadBibtex |
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Quelle: | Proceedings of IEEE Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), S. 135-137, Washington, D.C., USA, September 2006 | ||
To reduce energy consumption, aggregation takes place in a wireless
sensor network. All measured data is collected and preprocessed
multiple times on its way towards a data sink, e.g., a base station.
However, aggregation implies new challenges to security: as the sink
finally receives aggregated data, it is difficult to verify not only
the aggregate's correctness, but also the origin of the data the
aggregate was computed from. In the presence of an attacker in the
network, data transmissions and aggregation could have maliciously
been modified. Yet, it turns out that in-network aggregation and data
authenticity are contradictory communication properties. This
research examines the possibility of finding a trade-off
between security (authenticity) and energy-savings (aggregation). If
the user is willing to accept data's authenticity with $p\leq{}100\%$
probability, he can still save large amounts of energy compared to
authentic communication without aggregation.