The Research Of Online Ordering Scheme For Privacy Protection

With the development of the Internet, e-commerce as a representative of the newbusiness model, speed up the upgrading and changing the traditional business modelwith incredible speed. The people will be able to complete the business activities andonline shopping at home, e-commerce has brought to our lives convenient and fast.E-commerce to protect the privacy of personal information, especially personal onlineprivacy information protection has many problems. When the user in online shopping,some unscrupulous merchants will take the opportunity to collect users’ privateinformation and sell user information to obtain benefits. These behaviors seriouslyinfringe on the privacy of users, and hinder the healthy and rapid development ofe-commerce. Therefore, how to protect the privacy of users in the online orderingprocess is the current hot spot. As motivation, this paper expand research on privacyissues in the process of online ordering digital products, the main contents of this paperare as follows:Firstly, the thesis reviews the current situation of research on privacy protectiononline ordering of digital products,, As well as the user’s particularly privacy needs. Thisthesis analyzes the way merchants based on how to collect information about users andfor commercial purposes，and describes the need for further research and solveproblems in the privacy of online ordering digital product research areas.Secondly，This thesis describes the definition of the privacy of the network,introduces several kinds of network privacy information disclosure way. This thesisanalyzes the contents of secure multiparty computation and oblivious transfer protocol,and also describes the security requirements of the e-commerce activities in the datatransmission, digital signature and authorization issues.Thirdly, In order to protect the user’s privacy information better, we proposeOblivious Signature-Based Envelopes(OSBE) based on logarithm signatures, andintroduce the OSBE model. This thesis T describes the RSA-OSBE scheme,ELGamal-OSBE and Schnorr-OSBE scheme, compares and analyzes the three scheme.Finally, The privacy of users must be protected in e-commerce, according to thetheory of oblivious transfer, this paper proposed an online order of digital productsscheme which can effectively protect the user’ privacy through oblivious signature based envelope (OSBE) based on Schnorr signature. First, the user pays the bankcorrectly and anonymously, getting the digital signature of the product he will order.Then the user interacts with the merchant obliviously through electronic signature. Theuser can only get the product he orders while preventing the merchant malicious fraud.And the merchant can not ascertain the detailed product that the user has ordered.