Security Analysis of a Pairing-free Identity-based Authenticated Group Key Agreement Protocol for Imbalanced Mobile Networks.
Qingfeng Cheng · International journal of network security · 2015
Recently, Isalam and Biswas proposed a new group key agreement (GKA) protocol for imbalanced mobile networks. In this letter, we will first prove that Isalam and Biswas’s GKA protocol cannot provide perfect forward secrecy. Then we will point out that their GKA protocol is vulnerable to ephemeral key compromise attack.