The Electronic Cash Protocol Based on Dynamic Group Signature

Jian Xu¹⁺, Yuxi Li², Jingwei Miao³, and Fucai Zhou¹

¹Software College, Northeastern University, Shenyang, Liaoning, China
{xuj, fczhou}@mail.neu.edu.cn

²College of Information Science and Engineering, Northeastern University,
Shenyang, Liaoning, China
eliyuxi@gmail.com

³University of Lyon, CNRS, INSA-Lyon, LIRIS, UMR5205, F-69621, France
jingwei.miao@insa-lyon.fr

Abstract

Due to the increasingly serious information attacks in network times, the electronic commerce is facing additional challenges in the aspects of security and efficiency. Therefore, in this paper, we propose a new practical e-cash protocol based on dynamic group signature in BSZ model, using the Non-Interactive Zero-Knowledge proofs system. And it is proved that our protocol satisfies anonymity which resists chosen-ciphertext attack, unforgeability, traceability, and no double-spending without random oracles. Compared with the existing protocols, our protocol not only permits dynamic enrollment of members and non-interactive during transmission, but also offers lower storage and communication cost.

Keywords: electronic cash, group signature, BSZ model, Non-Interactive Zero-Knowledge

+: Corresponding author: Jian Xu

Information Security Institute Software College, Northeastern University, Shenyang, Lane 3, Wen-Hua Road, HePing District, Shenyang, Liaoning, 110819, China, Tel: +86-13804011518

Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications (JoWUA),

Vol. 4, No. 4, pp. 65-79, December 2013 [pdf]