| Summary: | 碩士 === 國立中興大學 === 資訊科學研究所 === 93 === In the time of electronic business, it is the major trend to buy e-goods through Internet. Therefore, the security of payment scheme is very important when a customer buy digital goods through payment database. The deal is accomplished mostly by delivering credit card information (credit card number and customer’s name). In this way, a user has no privacy because his personal information is exposed to database server. In order to protect customer’s privacy (personal information and what he buys) during the process of purchasing and paying, it will be a great challenge to design the security scheme.
There are payment database model and purchasing e-goods model in present electronic business. The major difference between these two databases is that the former is to adopt the membership which only allows special users to purchase its goods. The latter doesn’t have any restriction and member’s certification. Therefore, we use Secure Coprocessor with practical payment scheme for payment database to protect user’s privacy and solve online payment problem that reveals user’s identification and purchasing information. As for purchasing e-goods model, we offer symmetric key cryptograph system and encrypted algorithm combined with electronic cash to solve the revealing problem caused by online payment system and to protect every user’s privacy.
In this study, we divide the whole electronic business into two models: payment database model and purchasing e-goods model. A security scheme with electronic cash payment system is offered to protect user’s privacy and to solve revealing personal information caused by online shopping, payment and delivering digital goods. To the user who trades through Internet, the scheme we offer not only protect user’s privacy but also has practical value in electronic business combined with payment scheme.
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