中文摘要：

在有限域R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。

英文摘要：

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 Fq 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.