The Trust Relationship Based On SPKI In E-commerce

With the development of the Internet, information technology has been introduced into trade and commercial activities and thus brings forward the occurrence of electronic commerce. E-commerce decreases the product costs of enterprises, enhances profits and brings convenience to customers. However, the Internet is an opening network that everyone can access and exchange data and it creates a virtualized reality where E-commerce is different from the traditional face-to-face trade. Therefore, the security of E-commerce is of vital importance. The security of E-commerce includes the security of networks, data, application and so on. This dissertation endeavors to discuss the establishment of trust relationship in E-commerce based on SPKI.Preceding the discussion about trust relationship based by SPKI infrastructure, this dissertation introduces briefly about DES, RSA, digital signature and other relevant basic knowledge of cryptography. Since the certification in E-commerce is the premise to establish trust relationship, this dissertation also accordingly introduces the authentication technologies employed in present E-commerce.SPKI takes the infrastructure of Public-key as its theoretical foundation. This dissertation presents a detailed introduction on the basic theories, structures of SPKI certification, tuple reduction, and so on. While discussing the establishment of trust relationship based on SPKI, it presents the concept of formal trust relationship, defines the predicate descriptions and the rules of predicate calculus concerning the trust relationship based on SPKI, and explicates the model of SPKI trust relationship and the methods of constructing trust path.Finally, this dissertation introduces the multi-channeled electronic payment system based on SPKI, which sets up a trust relationship of B to C E-commerce by applying SPKI, solves the management and authentication of a large quantity of customer certificates, and relieves the requirement of the global certification authority, therefore provides a new method of developing the model of B to C E-commerce.