Group Key Management Scheme Based on Threshold
Dai Yang-huan · Jisuanji gongcheng · 2013
This paper proposes a Group Key Management Scheme Based on Threshold(GKMT).The idea of dynamic threshold secret sharing scheme to encrypt multicast streams is used in GKMT.When a user wants to join or leave a multicast group,it is need not to redistribute group key.It can greatly enhance the effectiveness of the scheme.Meanwhile,to enhance the scalability of the scheme,the original scheme is improved to LGKMT using the hierarchical control.Performance analysis result shows that GKMT and LGKMT schemes are superior to existing group key management scheme on key communication cost,suitable for the group communication network which group state often changes.