Robust Security System Based on Dynamic Signature Authenticated Peer Group Key Exchange
To reduce computation overhead, the protocol makes use of a simplified authentication mechanism such that only two neighbors of a participant check if a message is originated from the participant. The authors propose a Dynamic Signature Authenticated Peer Group Key Exchange (D-SAP-GKE) protocol in the ID-based setting. Different from previous ID-based protocols, their protocol does not utilize any paring based key, which makes it more efficient. At last, they analyze the security of the protocol in the robust security system model. In this paper, they show that the dynamic Signature authenticated peer group key exchange protocol has some security breaches caused by the restrictive authentication. They propose an efficient and authenticated key agreement scheme which can apply in the dynamic Signature Authenticated Peer Group Key Exchange.