一个具有有限流通期的离线电子现金系统

An off-line E-cash system with finite circulation period

提出了电子现金有效期的概念,据此建立了一个有限流通期离线电子现金系统。该系统具有计算量小,在线处理效率高的特点,且能有效地控制银行付款说明数据库的大小。本文详细描述了系统的各个协议,并给出了相应的安全性证明和效率分析。

The concept of validity duration of E-cash is introduced in this paper. Hereby, we present an off-line E-cash system with finite circulation period. Our E-cash system has the properties such as little calculate payload and high on-line transaction efficiency. Above all, the storage size of the transcript database created and maintained by bank is controllable. The details of each protocol in our new E-cash system are described thoroughly. In addition, the security proofs and efficiency analysis are given in the final part of this paper.