Realizing fully secure unrestricted ID-based ring signature in the standard model based on HIBE

Authors

Man Ho Au, University of WollongongFollow
Joseph K. Liu, Institute for Infocomm Research, Singapore
Willy Susilo, University of WollongongFollow
Jianying Zhou, Institute for Infocomm Research SingaporeFollow

RIS ID

82111

Publication Details

Au, M., Liu, J. K., Susilo, W. & Zhou, J. (2013). Realizing fully secure unrestricted ID-based ring signature in the standard model based on HIBE. IEEE Transactions on Information Forensics and Security, 8 (12), 1909-1922.

Abstract

We describe a secure and unrestricted identity-based ring signature scheme in the standard model. Our construction is provably fully secure in the standard model under static assumptions and is motivated by an existing HIBE scheme. Our observation on the relationship between ID-based ring signatures and HIBE is of interest to researchers in other fields as well. Following the strongest anonymity definition in ring signatures, we define a new level of anonymity for ID-based ring signatures in which the attacker can specify the randomness used in the creation of the user secret key, in addition to the private key generators master key. Our scheme provides unconditional anonymity in this model.