Key agreement scheme based on GDH for virtual dynamic subgroup group
基于GDH的协商式虚拟动态子群组密钥管理方案

Key agreement is usually mentioned in general static group.Based on virtual dynamic subgroup,Agreed Virtual Dynamic Subgroup Scheme (AVDSG) was proposed,which can manage the virtual dynamic subgroup by using the key information of the group.Compared with GDH,it can largely reduce the average cost of re-keying and the number of keys held by each user.