Intrusion Tolerant Multicast Key Management Scheme
Xiaokang Wang · Jisuanji gongcheng · 2008
The simple centralized group key management is used in most multicast application systems.Single point failure and congestion are often caused by single key server,and it's difficult to recover from failure,so the security and integrity are unavailable.In order to solve these problems,this paper proposes a scheme based on Information Dispersal Algorithm(IDA) and Threshold Secret Sharing(TSS).This paper replaces the single key server in the centralized model with a set of distributed key servers.The group management operations and the storage of the group key information are performed through the collaboration of all the servers.So the security and integrity of the key management system are enhanced.The management mechanism and the method of storage and distribution of the key information are then discussed in this paper.