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Erschienen in:
2015 | OriginalPaper | Buchkapitel
6. Privacy in Data Aggregation
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Abstract
We started addressing the security of in-network data aggregation in the previous chapter, where we addressed the problem of the Median computation where attacker nodes can be present. In this chapter we address another security problem related to the data aggregation: The node’s privacy. In fact, in the data aggregation technique, some sensor nodes need to send their individual sensed values to an aggregator node, empowered with the capability to decrypt the received data to perform a partial aggregation. This scenario raises privacy concerns in applications like personal health care and the military surveillance. The contributions of this chapter are two-fold: first, we design a private data aggregation protocol that does not leak individual sensed values during the data aggregation process. In particular, neither the base station nor the other nodes are able to compromise the privacy of an individual node’s sensed value.