Secure top-k query scheme in wireless sensor networks

Data privacy preserving in wireless sensor network has attracted more and more attentions. This paper proposes a secure top-k query scheme in wireless sensor networks (STQ). STQ uses symmetric encryption to preserve data privacy. To verify completeness of query result, STQ uses the improved hashed message authentication coding function to create a chaining relationship by binding ordered adjacent data. Theoretical analysis and simulation results confirm the security and efficiency of STQ.