E-commerce Payment System

The system of electronic payment is the most important part in E-business. The system is used to solve the problem about passing and security of information and capital flow among participants during the process of E-business. With the development of E-business, The system of electronic payment is becoming the factor that restricts the fast development of E-business. The paper discusses how to construct a secure system of electronic payment in order to realize real , online, secure payment in E-business.The paper consists of seven parts. The forth part and the fifth part is key parts in the paper. The first part introduces the status quo of E-business in China and the factors that restrict the development of E-business. The second part tracks the technology of information security and electronic security protocol which is advanced nowadays and will be applied in later sectors .The third part analyses secure demands of E-business and design general system frame of secure electronic business. The forth part analyses data flow and transaction process in the systems of electronic payment based on SET protocol and SSL protocol distinctly, then designs them. Systems of electronic payment consist of four logic parts, including client side, payment server, payment gateway, which is designed in fifth part. The sixth part states there are some problems during the course of realizing systems of electronic payment, then gives the way of solving them. A case is used to analyze how to ensure security of mobile commerce and realize payment of mobile commerce in the last part.