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.