一种分层传感器网络安全协议的分析与改进

Anonymous Extension of a Secure Protocol in Hierarchical WSNs

随着无线传感器网络的广泛应用,其安全性也受到日益严重的挑战。在某些需要保护隐私信息的场合中,通信协议的匿名性设计已成为完整安全解决方案中不可或缺的部分。分层分簇的网络结构因其扩展性及可最大化能源使用效率成为大规模无线传感器网络的首选模型。文中对一种分层传感器网络中的安全协议进行路由匿名性改进,利用基站与传感器共享的会话密钥构造轻型可验证合法性的匿名路由分组,且匿名机制允许进行数据融合与汇聚。以数据分组与端节点不可关联性为目标定义协议的理想过程,然后参照理想过程,使用UC(Universal Composition)框架中的混合模型分析与证明协议的匿名安全性。

Wireless sensor networks are being used widely for various applications while more and more attacks are challenging them to play more important role in society. In some privacy-vital environments, the security of WSNs not only involves the confidentiality, authentication and integrity, but also the anonymity and privacy. Large WSNs are often organized into hierarchical clusters for scalability and energy- efficiency. This paper proposes an anonymous routing scheme based on a secure protocol in hierarchical WSNs. During the data transmission process from a base station to sensor devices, the base station forms a lightweight route onion using shared keys between it and sensors, At the same time, the data fusion and aggregation can be implemented in the anonymous scheme. A UC - style ideal functionality for the data transmission process is defined and the anonymity of the improved protocol is proved in the universal composition framework.