| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an online shopping system which can improve reliability of transactions between the users and electronic-commerce mall dealers. SOLUTION: In a packet transmission step 102, a user transmits a packet concerning the commodity ordering of a user commodity order step 101 to a mediation institution. In a mediation institution commodity order step 103, the mediation institution gives the orders of commodities to an electronic- commerce mall dealer with the mediation institution itself designated as a commodity sending destination. In a credit card number notification step 104, the mediation institution notifies the electronic-commerce mall dealer of its own credit card number. In a cipher cancel key transmission step 107, the user transmits a packet cipher cancel key to the mediation institution in exchange for the commodity received in a mediation institution commodity sending step 106. In a charge/commission reception step 108, the mediation institution decodes the packet cipher by means of the cipher cancel key and the credit card number is obtained.</p> |
