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We consider a sensor network that is not fully trusted and ask the question how we preserve privacy for the collected data and how we verify the data reply from the network. We explore the problem in the context of a network augmented with storage nodes and target at range query. We use bucketing scheme to mix the data for a range, use message encryption for data integrity, and employ encoding numbers to prevent the storage nodes from dropping data.
Date of Conference: 13-18 April 2008