Abstract: Zero-knowledge set is a set that has zero-knowledge quality. The structure of the set makes that a prover can commit to any arbitrary finite set of strings and for any string, reveal with a proof whether a given element is in the set without revealing any knowledge beyond the verity of these membership assertions. In this study, we advance a new Group Key Distribution protocol based on zero-knowledge set and polynomial computation so that the identity and number of the group members can be concealed and realize key distribution at the same time. The protocol not only provides a dynamic distribution on a group key, but also guarantees nobody can get additional information about other members except the group key. Compared with previous work, our protocol can provide more security and is suitable for some special network application, such as military action and anonymous e-commerce meeting.
Sun Haibo , Lin Dongdai and Xue Rui , 2006. A New Group Key Exchange Protocol Based on Zero-Knowledge Set . Asian Journal of Information Technology, 5: 237-241.