无线传感器网络中具有撤销功能的自愈组密钥管理方案

在有限域F_q上构造基于秘密共享的广播多项式,提出一种具有节点撤销功能的组密钥更新方案.同时,基于单向散列密钥链建立组密钥序列,采用组密钥预先更新机制,容忍密钥更新消息的丢失,实现自愈.分析表明,在节点俘获攻击高发的环境中,方案在计算开销和通信开销方面具有更好的性能.

Self-healing group key management scheme with revocation capability for wireless sensor networks

A new group key management scheme against the unreliable wireless communication channel and unsafe environment was proposed for wireless sensor networks.In the proposed scheme,broadcast polynomial,which was generated over finite field F_q based on the secret sharing.Was employed to revoke compromised sensor nodes.In order to tolerate key-update message loss and be self-healing,group session keys were generated as one-way hash chain sequence and distributed in advance.The analysis shows that our scheme has better performance in terms of the computation and communication overhead.