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With the economic development and the extensive application of electronic information technology and the rapid popularization of e-commerce with its advantages of fast, convenient, universal increasingly recognized and trusted by society, electronic payment as the core technology of e-commerce are also commercial transactions a wide range of applications, electronic payment system security problem exists because of its customers distributed and open character,. This article conducted a systematic study on the security of electronic payment process, the analysis of the electronic payment process inherent vulnerability or fragility of the security threat, given the recommendations of the security services and security mechanisms can be implemented electronic payment, electronic payment security model, build electronic payment security architecture, and presided over an electronic payment of project to be realized. The main thesis: introduces electronic payment security technology research and development status, analysis of the security requirements of the electronic payment features of the model as well as the study of electronic payment process safety risks. 2. Study the key technology of the electronic payment security, including cryptosystem, digital signature, authentication, public key infrastructure, access control, SSL protocol, SET protocol, virus prevention, and backup and recovery technology, focus research group signature and identity , and on this basis, according to the specific application of electronic payment environment, the design of safe and efficient electronic payment system. Looking to the security of electronic payments in key technology trends. The main research paper: 1. Draw on existing research group signature design an improved group signature scheme. Ao Qingyun other scholars group signature scheme to identify the defect whose existence forgery attack, improved program, the new program is the original group signature scheme on the finite field GF (p) algorithm is extended to the ring Z_n larger or maximum orders of the generator g, and found on the ring, and by modifying the value of the signed certificate r_i enhanced safety performance and improve the processing efficiency, have improved, the other can be further transplantation some new password for example, on the ring system, elliptic curves, etc., which can be easily constructed from the program more functional electronic payment systems. Using Petri net theory, to explore the establishment of the electronic payment security model.
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