A deniable group key exchange protocol for imbalanced wireless networks

Group key exchange protocols allow two or more users to generate a common group session key over an insecure channel, which can be used in the future communication. With the development of mobile communications, resourcelimited mobile users should be considered in the design of group key exchange protocols. In this paper, we propose a deniable group key exchange protocol for an imbalanced wireless network, which consists of a sufficient computational powerful node and a cluster of mobile users with limited computational resources. This protocol with perfect forward secrecy can provide deniable authentication and ephemeral key compromise resilience.