异构传感器网络中的一种混合密钥预分配方案

针对异构无线传感器网络,提出一种混合密钥预分配方案。该方案针对异构节点采用不同密钥预分配策略：高级节点采用基于身份的公钥密码机制进行节点间的认证和密钥协商;普通节点主要采用基于单向散列链的随机密钥预分配策略,在高级节点的辅助下进行对偶密钥的建立。在对偶密钥建立过程中,采用共享密钥发现和密钥协商相结合的方法,充分发挥公钥密码机制和随机密钥预分配策略的优势,达到较好的安全连通性和抗毁性。理论分析和仿真试验结果证明方案的可用性和安全性。

A Hybrid Key Pre-distribution Scheme for HWSN

A hybrid key pre-distribution scheme for heterogeneous wireless sensor networks is proposed.It deploys different methods to establish keys for heterogeneous nodes.Advanced nodes authenticate each other and reach key agreement using identity-based cryptography and common nodes establish pair-wise key using random key pre-distribution method based on one-way hash chain.The pair-wise key is established by key agreement and shared key discovery which takes advantage of public key and random key pre-distribution method.The analysis and simulation show that the proposed scheme performs well in terms of security connectivity and anti-attack by the combination of characteristic of heterogeneous nodes and hybrid key management.