Abstract:

In this paper, to protect data integrity in data aggregation of Wireless Sensor Network (WSN), a secure and efficient data aggregation scheme was proposed, which was based on Dual-head Cluster Based Secure Aggregation (DCSA). By setting symmetric keys between nodes and using distributed authentication method, this scheme performed node authentication and aggregation simultaneously, as integrity-checking of child node was completed immediately in the process of aggregation. Also, by using the oversight features of red and black cluster head, this scheme could locate malicious nodes and enhance the capability of anti-collusion attack. The experimental results show that the proposed scheme ensures the same security level with DCSA, and this scheme is able to detect and discard erroneous data immediately. It improves the efficiency of integrity detection mechanism and it has lower network energy consumption.

Key words: Wireless Sensor Network (WSN), data aggregation, security, data integrity, distributed authentication

摘要：

针对无线传感器网络(WSN)数据融合中存在的数据完整性保护问题，在双簇头安全融合（DCSA）方案的基础上，提出一个安全高效的数据融合方案，通过在节点间加入对称密钥，采用分布式验证方法，使节点认证与融合同时进行，在向上融合的过程中立即证实子节点融合数据的完整性。同时，利用红黑簇头的监督特性，能够定位恶意节点，增强抗共谋攻击能力。实验结果表明，所提方案在保证与DCSA相同安全等级的前提下，能够及早检测并丢弃错误数据，提高了完整性检测机制的效率，且具有更低的网络能耗。

关键词: 无线传感器网络, 数据融合, 安全性, 数据完整性, 分布式认证