The Study of Efficient Rekey Interval Allotment for Minimum Cost on Secure Multicast

보안 멀티캐스트 환경에서 최소비용을 위한 효과적인 Rekey Interval 할당에 관한 연구

This paper proposed for allotment of group key's rekey interval required from secure multicast environment. New group key distribution occurs in two cases: one is periodical update and the other is permitted or unpermitted withdrawal of group member. In later case, the group controller distributes new group key to member except withdrawal member because it can't predict precisely. In former case, the group member who cheated the group can adjust the rekey interval. Using relation between security level, overhead and cost from rekey interval, this paper suggests effective rekey interval allotment through probable performance analysis in large dynamic group.