Affiliation-hiding authenticated asymmetric group key agreement based on short signature

Authors

Chang Xu, Beijing Institute of Technology
Hua Guo, Beihang University
Zhoujun Li, Beihang University
Yi Mu, University of WollongongFollow

RIS ID

95854

Publication Details

Xu, C., Guo, H., Li, Z. & Mu, Y. (2014). Affiliation-hiding authenticated asymmetric group key agreement based on short signature. The Computer Journal, 57 (10), 1580-1590.

Abstract

The notion of Affiliation-Hiding Authenticated Group Key Agreement (AH-AGKA) protocols was first introduced by Jarecki et al. in CT-RSA 2007, where they presented two concrete AH-AGKA protocols. In this paper, we show that Jarecki et al.'s second protocol has some drawbacks. We propose a new affiliation-hiding protocol. Differing from Jarecki et al.'s protocol, our protocol is asymmetric. Compared with existing AH-AGKA protocols, our scheme not only exhibits the affiliation-hiding property, but also holds the properties of detectability and perfect forward secrecy.