An Efficient Fair Electronic Cash System

作     者：郭涛 Li Zhitang Tan Yunmeng Wu Shizhong 

作者机构：Department of Computer Science & Technology Huazhong University of Science and Technology Wuhan 430074 P.R.China Department of Communication Science & Technology Huazhong University of Science and TechnologyWuhan 430074 P.R.China China National Information Security Testing Evaluation & Certification Center Beijing 100091P.R.China 

出 版 物：《High Technology Letters》 (高技术通讯（英文版）)

年 卷 期：2003年第9卷第3期

页      面：1-5页

学科分类：081203[工学-计算机应用技术] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：theNationalNaturalScienceFoundationofChina 

主　　题：有效公平电子货币系统 电子支付 电子商务 Internet 交易安全 

摘      要：In this paper, an efficient fair e-cash system is presented. Based on the improved Brands’ e-cash scheme, it is expanded by adding two roles, government and judges. The user can keep unconditionally anonymous in normal transactions. Authorized by the judges, the government can remove the identity of an illegal user with the help of the bank. So such misuse as blackmailing or money laundering can be prevented. Therefore, this scheme is more efficient, more suitable for adopting pre-processing and post-processing and more practical. In the paper, the details of the scheme are described, its security is proved, and its efficiency is analyzed.