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

An electronic international trade transaction server comprising:

• a user registration processor unit that 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 as the exporter, buyer as the importer, and transportation company
• a transfer registration processor unit that changes the access right holder and the cargo owner of the shipment information registered to the database at the start of the international trade transaction in compliance with the request for request for changing registration of the party with the digital signature and public key certification attached, and
• a verification processor unit that 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:
• and
• wherein the transfer registration processor unit initially registers the shipment information with the cargo owner designated as the seller to the database in accordance with the initial registration request from the client for transportation company with the digital signature and the public key certificate attached, the title to the cargo is requested for changing registration to the buyer in accordance with the request for changing registration from the client for seller with the digital signature and public key certificate attached, the registration of shipment information is closed in accordance with the closure request from the client for buyer with the digital signature and the public key certificate attached and the change of the cargo owner is prohibited, in this case, the verification processor unit verifies that the digital signature attached to each request has been prepared by the private key that makes a pair with the public key certificate registered to the database, and acquires the approval of the other party simultaneously, thereby achieving the transfer registration with legal binding force.

An electronic international trade transaction method, comprising

• registering the user registration information including the public key certificate acquired from the certificate authority that has jurisdiction over each party to the server on the request of the transaction parties including the seller as the exporter, buyer as the importer, and transportation company;
• changing the access right holder and cargo owner registered to the database at the start of international trade transaction to other party in compliance with the request for changing registration of the party with the digital signature and public key certificate attached;
• and
• achieving the transfer registration with legal binding force by verifying that the digital signature attached to each request has been prepared by the private key that makes a pair with the public key certificate registered to the database, and acquiring the approval of the other party simultaneously.

A computer-readable memory medium storing the electronic transaction program, the said electronic international trade transaction program, comprising:

• a user registration operation registering the user registration information including the public key certificate acquired from the certificate authority that has jurisdiction over each party to the database on the request of the transaction parties including the seller, buyer, and transportation company;
• a request for changing registration operation changing the access right holder and cargo owner registered to the database at the start of the international trade transaction to other party in compliance with the request for changing registration of the party with the digital signature and public key certificate attached;
• and
• a verification operation achieving the transfer registration with legal binding force by verifying that the digital signature attached to each request has been prepared by the private key that makes a pair with the public key certificate registered to the database, and acquiring the approval of the other party simultaneously.