SERVICE PROVISION CONTRACT SYSTEM, INTERMEDIARY SERVER, SERVICE PROVISION CONTRACT METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a service provision contract system, an intermediary server, a service provision contract method, and a program simultaneous acquiring pieces of information with guarantees, and third party guarantee certificates from a plurality of guarantors by the same means without involving a user terminal through a series of processes of authority confirmation.;SOLUTION: A service provider server 20 generates a guarantee request including guarantor access information including information for identifying a client for the third party guarantee certificates, certification items, an encryption key for a reply, and a digital signature, and the guarantee request is encrypted and sent to the intermediary server 30. The intermediary server 30 searches for guarantor servers 40, distributes the guarantee request, and generates a digital contract combining all replies.;COPYRIGHT: (C)2007,JPO&INPIT