Centralized group key management algorithm based on polynomial construction

Abstract

With the improvement of network technology, group key management system gradually becomes an important research topic. In general, the group key management protocol schemes mainly consist of three different types, and the centralized group key management protocol has been widely used in different fields, such as multicast communication and Intelligent Internet information system. The basic idea is that the key generation centre controls the whole group. In order to construct secure and efficient group key algorithm protocol, this paper proposes a group key management algorithm based on polynomial construction. The results of proposed scheme show that any authorized member can obtain group key by private key pair. Furthermore, they can check the validity of the broadcast message.