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针对GDH(group diffie-hellman)方案中节点可能成为系统的瓶颈以及计算复杂度、通信代价和存储复杂度远高于某些集中式方案等缺陷,提出并实现了一种基于优化GDH协商的高效安全的动态群组密钥管理方案,并对其安全性进行了证明。通过对计算量和通信量进行分析比较表明,优化GDH协商协议具有很大的优势,并且能够快速产生或更新组密钥,具有很强的实用性。
Aiming at the bottleneck that the nodes in the group diffie-hellman (GDH) scheme may become, and the computational complexity, communication cost and storage complexity are far higher than those of some centralized schemes, a highly efficient GDH-based protocol is proposed and implemented Secure dynamic group key management scheme, and prove its security. By analyzing and comparing the amount of computation and the amount of traffic, it is shown that optimizing the GDH protocol has great advantages and can quickly generate or update the group key, which is of great practicability.