Fujitsu Corporation

Mitsubishi Corporation

Ntt Communications Corporation

Sumitomo Corporation

Information-technology Promotion Agency

Toshihiko Kaji

Yasuharu Ito

Kazuhiko Sekine

Akimitsu Yomoda

Seinosuke Kashima

Keiko Shiraishi

Hirofumi Fujiwara

Hajime Kojima

Toshiyuki Iida

Munehiko Ishimi

Yoshihide Tanaka

A witness system using EDI (electronic data interchange) to perform efficient distribution and account settlement processes between selling and buying companies. A buying company makes documents according to delivery or order vouchers, and electronically sends the documents to a selling company via a notarization authority. The selling company compares the authentication documents with delivery or order vouchers the selling company issued, and, after determining that the documents are correct executes a confirmation response to the notarization authority. The notarization authority registers the documents in the witness server's receipts detail table and notifies the buying and selling companies that the notarization authority authenticated the documents. This structure enables the making of accurate detailed payment statements when, for example, a detailed payment statement is made or a funds transfer is executed based on confirmed data. Furthermore, checking the detailed payment statement is made simpler through reference to the witness system server.

Witness system

A user registration processor unit registers the user registration information to the database, which includes the public key certification acquired from the certification authority that has jurisdiction over each party by the request from the transaction party including seller, buyer, and transportation company. A transfer registration processor unit changes the access right holder and the cargo owner of the shipment information registered to the database at the start of transaction in compliance with the request for request for changing registration of the party with the digital signature and public key certification attached. A verification processor unit achieves the transfer registration with legal binding power by verifying that the digital signature attached to the request for request for changing registration has been prepared by the private key which makes a pair with the public key certificate registered to the database and receiving the approval of the other party.

Electronic transaction server, client for seller, client for buyer and electronic transaction method

Growing community of inventors

Kawasaki, Japan

Toshihiko Kaji