| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an access right control system which can control access to services provided by a plurality of servers using one user account when an access to data or service on a server is limited during sessionless communication between a client and a server system. <P>SOLUTION: This system is a distributed system in which a plurality of servers providing services using sessionless communication are connected by a network, functions of the services provided by these servers can be shared therebetween or work therewith, and a user authentication method supports a digital signature. A server receives service request information including the kinds of services that the first service can utilize provided by the second server and a digital signature, and when the server requires the second service, an access from the first services to the second service is controlled by sending the received service request information for the first service and the digital signature together with the received service request information for the second service. <P>COPYRIGHT: (C)2003,JPO |
