R-LKH: An Improved Multicast Key Management Scheme Based on LKH
Wanfeng Dou · Microelectronics & Computer · 2006
Multicast is broadly applied with the development of the Internet and group key management will become a critical issue in secure multicast. Some existing schemes were analyzed and the focus is put on the logical key hierarchy (LKH) gained extensive attention and a new key management scheme-R-LKH-is proposed, and its algorithm is designed. Analyses show that it lowers the key storage costs observably and possesses a good communication efficiency, thus is scalable to large dynamic groups, through the comparison of communication costs, key storage and computation complexity between the scheme presented in this paper and other schemes.