A Trusted Efficient Group Key Management Protocol

Multicast is an efficient delivery which an identical data is sent to many group members from a multicast source or many multicast sources. However, there is a growing need to conquer the multicast security problem limiting its successful and extensive application. In this work, an efficient and trusted group key management protocol (EGKMP) is proposed, compared to previous tree-based key management protocol LKH and Group Key Management Protocol GKMP, EGKMP protocol can efficiently reduce the amount of key update messages, due to the operation of group member to join and leave the multicast group, in fact, the protocol eliminates the rekeying process. EGKMP protocol also utilizes TPM to credibly produce, store and distribute keys, the trustworthiness of its key management is superior to tree-based protocol LKH and GKMP. Security analysis, performance analysis shows that EGKMP agreement is the desired efficiency and trustworthiness.