A novel privacy- and integrity-preserving approach for multidimensional data range queries in two-tiered wireless sensor networks

• Published in: International journal of distributed sensor networks Vol. 15; no. 6; p. 155014771985589
• Main Authors: Wang, Lei, Zhao, Meng, Chen, Jin, Li, Xueyong, Chen, Zhiping, Tang, Yihong, Zou, Sai
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.06.2019; Wiley
• Subjects: Two-tiered sensor network; multidimensional data; integrity verification; privacy preservation; range query
• ISSN: 1550-1329; 1550-1477; 1550-1477
• DOI: 10.1177/1550147719855893

To address the problem of storage nodes in wireless sensor networks being vulnerable to attack, this article proposes a new range query protocol, WQuery, based on multidimensional data privacy and integrity protection. To ensure the privacy of multidimensional data, the WQuery protocol encodes multidimensional sensing data and user query requests based on a bucket-partitioning scheme and sequential encryption mechanism at the sensor node and sink node. Therefore, the storage nodes cannot sense the real value of sensing data and query requests under the premise of correctly executing the request. To ensure the integrity of the multidimensional data query results, WQuery includes an integrity verification scheme based on the new tree-to-destination data structure. The scheme translates the actual query scope of a user request into a matched set of bucket labels and verifies the integrity of query results through the tree-to-destination data structure. Simulation results show that the tree-to-destination scheme is flexible, easy to implement, and highly secure, thereby effectively reducing energy consumption.