Research And Design Of Secure Electronic Payment System

By development and increasingly fusion of computer, network and information technology, Internet has entered every field and every tache of our life. Organization, unit, family and individual can obtain the resources and share information by Internet. EC (Electronic Commerce) is a kind of dynamic commercial activity, which emerges under mergence of Internet and traditional information technology. Making use of computer network, EC can link all aspects of commerce activities, such as merchant, customer, bank or financial department, Credit Card Company or stock company, and government, and realize completely electronic of on-line bargain in Internet. This kind of EC that bases on Internet brought traditional bargain method a revolution.Electronic payment is inevitable production of EC development. What is electronic payment? Regarding commercial electronic fool and all kinds 'of electronic money as media and taking computer technology and communication technology as means, which realizes circulation and payment of fund in computer network system with electronics data saving and deliver is electronic payment. In the complex and enormous EC system engineering, electronic payment is nuclear engineering of EC development. Electronic payment is a connecting link between the preceding and the following in whole process. How customers implement electronic payment for all kinds of products and service is key tache. If the tache can't be solved well, dealing flow will be slower, and even break off. So electronic payment has inevitable relation with EC. Electronic payment is the most nuclear and the most key tache of EC, and is basic condition of doing EC. Security is the most key problem for electronic payment. How electronic fund realizes real-time and secure transmission in insecure internet, as well as realize secure electronic payment,is one of the most attentive problems in the field of EC.This dissertation makes a thorough and systematic analysis of security electronic payment. First, the dissertation explicates general situation of EC development and importance of electronic payment to EC. Basing on it, dissertation briefly introduce concept and classify of EC and electronic payment; Second, dissertation explicates data encrypt technology; Third, dissertation explicates two electronic payment protocols (SSL protocol and SET protocol), which correlate EC; Fourth, the text sums up five payment models in common use of electronic commerce activity; Finally, according to principle of SET protocol, and regarding CFCA as the attestation system, the dissertation designs a BtoB EC security payment system.