This paper analysis the centralized control scheme based on logical keyhierarchy and gives an improvement.
本文对基于逻辑密钥树的集中控制方案进行了分析和改进。
2
The logical keyhierarchy (LKH) scheme is the most efficient protocol for key management in the field of multicast at present.
逻辑密钥层次（LKH）方案是目前多播领域中最有效的密钥管理协议。
3
A key technique for ensuring timely resource release is to maintain a strict hierarchy of ownership; with ownership comes the responsibility to release the resource.