Then,the authors propose an untraceable multi-blind signature scheme to keep not only the privacy but also the security in a proper environment which can be put into practice in the application of e-check payment.

Comparative analysis of the e-payment in e-commerce of China;

Discussion on Problem of E-payment Security of User Clients;

Discussion on the Sub-health Situation of E-payment;

Programme of electronic payment system in tariff recovery;

Petri net model and analysis for electronic payment security protocol;

Research on off-line electronic payment scheme based on semi-fragile watermarking;

Design and Research of Electronic Check System Based Threshold Group Signature;

An efficient design scheme for electronic check set in an electronic wallet is proposed.

The fairness is introduced to electronic check system for the first time,and the model of fair electronic check is discussed.

Briefly on the process of cyber trading with E-check;

E-cheque payment system based on digital watermarking and digital signature;