ID-Based Fair Off-Line Electronic Cash System with Multiple Banks  

作　　者：王常吉 汤庸 李琴 

机构地区：[1]Department of Computer Science Sun Yat-Sen University

出　　处：《Journal of Computer Science & Technology》2007年第3期487-493,共7页计算机科学技术学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China under Grant Nos.60503005 and 60673135;the Natural Science Foundation of Guangdong Province under Grant No.05200302;the Open Fund of Guangdong Province Information Security Key Laboratory and the State Key Laboratory of Information Security.

摘　　要：ID-based public key cryptography （ID-PKC） has many advantages over certificate-based public key cryptography （CA-PKC）, and has drawn researchers＇ extensive attention in recent years. However, the existing electronic cash schemes are constructed under CA-PKC, and there seems no electronic cash scheme under ID-PKC up to now to the best of our knowledge. It is important to study how to construct electronic cash schemes based on ID-PKC from views on both practical perspective and pure research issue. In this paper, we present a simpler and provably secure ID-based restrictive partially blind signature （RPBS）, and then propose an ID-based fair off-line electronic cash （ID-FOLC） scheme with multiple banks based on the proposed ID-based RPBS. The proposed ID-FOLC scheme with multiple banks is more efficient than existing electronic cash schemes with multiple banks based on group blind signature.ID-based public key cryptography （ID-PKC） has many advantages over certificate-based public key cryptography （CA-PKC）, and has drawn researchers＇ extensive attention in recent years. However, the existing electronic cash schemes are constructed under CA-PKC, and there seems no electronic cash scheme under ID-PKC up to now to the best of our knowledge. It is important to study how to construct electronic cash schemes based on ID-PKC from views on both practical perspective and pure research issue. In this paper, we present a simpler and provably secure ID-based restrictive partially blind signature （RPBS）, and then propose an ID-based fair off-line electronic cash （ID-FOLC） scheme with multiple banks based on the proposed ID-based RPBS. The proposed ID-FOLC scheme with multiple banks is more efficient than existing electronic cash schemes with multiple banks based on group blind signature.

关 键 词：electronic cash restrictive partially blind signature ID-based cryptography 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]