基于增强型双向散列链的自愈组密钥分发方案

Self-healing group key distribution scheme based on enhanced dual directional hash chains

针对基于传统双向散列链的自愈组密钥分发方法无法抵制合谋攻击的不足,提出了引入滑动窗口和轻量级子链LiBHC结构的增强型双向散列链结构,并给出了基于该结构的自愈组密钥分发方案。该方案有效地解决了组密钥的无缝切换问题,更大程度地减少了合谋攻击对系统构成的安全威胁。分析表明,本方案在保持较好的资源开销优势的前提下,获得了更好的安全性和可靠性,更适用于节点俘获攻击多发的应用场景。

The conventional dual directional hash chains based self-healing group key distribution schemes are vulnerable to the collusion attack.To overcome the problem,this paper introduced EDDHC,which consisted of a slide window and a light weight sub-chain（LiBHC）.The paper also used EDDHC to design the group key distribution scheme.The proposed scheme enabled the seamless switching of the group key in used and the greater reduction of security vulnerability to the collusion attack.The analysis illustrates that the scheme maintains low resource overhead while achieving better reliability and security performance