Date Added: Mar 2012
In this paper, the authors mainly focus storage, computation, communication cost for secure dynamic multicast key distribution. Efficient key distribution is an important problem in secure group communication. Members in the groups are dynamic. They required new key update by using some encryption algorithm during the time of member join and revoked from the group. The previous work is focus on the basis of complete key graph algorithm, hierarchical key management algorithm follow the secure key distribution in the centralized method. They propose new protocol framework is Secure Group Overlay Multicast (SeGrOM) that follow decentralized method apply the protocol in hierarchical structure forms hybrid key management algorithm. Instead of using conventional encryption algorithm, the MDS code is used.