论证子系统的设计：包括认证中心的建立与运作，商家证书和用户证书的申请、颁发、查询、安装。
The authentication subsystem which includes the establishment and operation of authentication center, the application, grant, query, and setting of merchant and client certificate.
分析了一个电子商务系统中认证中心，商家，客户三个实体的关系，研究了电子商务的支付问题并提出改进方案。
It analyzes the relation of authentication center, merchant and client, discusses the defrayment problem of E-commerce and puts forward a better scheme.
分析了一个电子商务系统中认证中心，商家，客户三个实体的关系，研究了电子商务的支付问题并提出改进方案。
It analyzes the relation of authentication center, merchant and client, discusses the defrayment problem of E-commerce and puts forward a better scheme.
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