In this paper, according to the studies of about the behaviors of multicast group members in the MBone, and the ideas of batch processing and optimization control, an optimized batch re-keying scheme and its algorithm are designed.

Group rekeying is essential for large dynamic group security,especially for Internet multicast security,and batch rekeying is a focus among the high performance group security mechanism.

This paper puts forward a full new multicast rekeying scheme, the scheme combines batch rekeying and key rotation scheme together to enhance system’s security.

A new method of secure multicast rekeying based on hyperball;

Group rekey is triggered by the managers in the lower layer.

Research and implementation of group key management in batch group rekeying;

A Rekeying Algorithms for Dynamics Multicast;

A study of the batch rekeying for multicast security;

EAwLKHT:energy-aware multicast re-keying scheme in Ad Hoc networks;

Algorithms of Re-keying in Network & their Implementation;

While the efficiency of re-keying is a main factor that influences the performance of secure multicast, grouping keys into logical tree and re-keying for users change are effective ways to improve the efficiency of re-keying and reduce the burden of key management and network.