| In order to better dealing with software complexity, this article try to use service oriented developing model to rebuild traditional component-based application, which its code cannot be wide-range utilize, distributed application obviously still has limitation and hard to share common data between different systems. But security problem is one of the key reasons that prevent web service from being widely used. This article gives a solution for web service by providing an asymmetric digital signature and encryption module. The purpose of the module is to provide hige level identity validation for web applications. Module's components are independent, open and platform regardless. The algorithm which provided by the module can satisfy application's requirement of higher level security. Security module of the Web service can be wide-range reutilized, and is easy for upgrade and maintenance. The e-business order system based on a safe web service is a new distributed web application, which is build on the .net platform, totally serivce-oriented and high level secured. The relation between service and application is request-response mode, loose-coupled, platform regardless. The system also integrated with the asymmetric digital signature and encryption module to validate web user's identity. So, the system has outstanding performance and has real value in e-business software market. The system also provides a possible developing method for all kinds of applications, and describs the revolutionary meaning of service-oriented developing model in the software developing industry. |
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