| Summary: | 碩士 === 亞洲大學 === 光電與通訊學系碩士班 === 98 === Since network technology and the client/server architecture are rapidly development and more important in research recently. The Internet can support many different multi-media services such as on-line games, e-mail, and so forth. However, the most services are supported by the client/server infrastructure. In the client/server environment, authentication is one of most important security requirements, because an adversary might try to cheat the server with some benefits. It means that before the legal user accesses the server for some services, they must be authenticated by the server.
In this study, we discuss the characteristics and requirements on three user authentication schemes for client-server environment and point out that their scheme has some security weaknesses. Then we proposed improved scheme to solve these weaknesses and compared with related works in terms of security analysis, performance comparisons and functionality comparisons. According security analysis and comparisons, our proposed scheme is more secure, efficient and practical.
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