A Scalable Multi-service Group Key Management Scheme

Scalable multi-service oriented group key management addresses issues relating to situations where dynamic group users have different privileges for accessing different sets of services. In this paper, we propose a new flexible group key management scheme based on an ID-based distribution encryption algorithm. This scheme has several advantages over existing multi-service oriented schemes. We show that the proposed scheme has some unique scalability properties, less storage, less communication overhead and inherent traitor tracing and stateless properties than previously known schemes. We believe the proposed scheme can be used to provide a secure information distribution method for many multi-service group-oriented applications.