AUTHORITY DELEGATE SYSTEM, SERVER SYSTEM IN AUTHORITY DELEGATE SYSTEM, AND CONTROL METHOD FOR CONTROLLING AUTHORITY DELEGATE SYSTEM

摘要

An authority delegate system including a first server system to manage specific information, a second server system to provide a service, an authentication device, and a client operated by a first user who is authorized to use the service, includes a reception unit, a transmission unit, a management unit, a determination unit, and a provision unit. The reception unit receives an authorization token shared range for authorizing specific information usage. The transmission unit transmits to the client a setting screen for setting whether to permit users within the shared range to share the authorization token. The management unit manages the setting screen set shared range, and the authorization token issued by the authentication device. The provision unit provides, in response to determining that the second user is included in the shared range and confirmation that the authorization token is valid, the service to the second user using the specific information.