Dai Hua, Ye Qingqun, Yang Geng, Xu Jia, He Ruiliang
School of Computer Science and Technology, Nanjing University of Posts and Telecommunications, No.66 Xinmofan Road, Nanjing 210013, China.
Key Laboratory of Broadband Wireless Communication & Sensor Network Technology, Nanjing University of Posts and Telecommunications, Ministry of Education, Nanjing 210013, China.
Sensors (Basel). 2016 Feb 20;16(2):259. doi: 10.3390/s16020259.
In recent years, we have seen many applications of secure query in two-tiered wireless sensor networks. Storage nodes are responsible for storing data from nearby sensor nodes and answering queries from Sink. It is critical to protect data security from a compromised storage node. In this paper, the Communication-efficient Secure Range Query (CSRQ)-a privacy and integrity preserving range query protocol-is proposed to prevent attackers from gaining information of both data collected by sensor nodes and queries issued by Sink. To preserve privacy and integrity, in addition to employing the encoding mechanisms, a novel data structure called encrypted constraint chain is proposed, which embeds the information of integrity verification. Sink can use this encrypted constraint chain to verify the query result. The performance evaluation shows that CSRQ has lower communication cost than the current range query protocols.
近年来，我们看到安全查询在两层无线传感器网络中有许多应用。存储节点负责存储来自附近传感器节点的数据并回答来自汇聚节点的查询。保护数据安全以防存储节点被攻破至关重要。本文提出了通信高效的安全范围查询（CSRQ）——一种保护隐私和完整性的范围查询协议，以防止攻击者获取传感器节点收集的数据以及汇聚节点发出的查询的信息。为了保护隐私和完整性，除了采用编码机制外，还提出了一种名为加密约束链的新型数据结构，它嵌入了完整性验证信息。汇聚节点可以使用这个加密约束链来验证查询结果。性能评估表明，CSRQ的通信成本比当前的范围查询协议更低。
