AUTHENTICATION COLLABORATION SYSTEM, ID PROVIDER DEVICE, AND PROGRAM

摘要

It is possible to decide whether or not a service can be used without requiring a manual operation and giving a burden to the user when account registration and collaboration are executed in the process of an SSO.A policy storage unit of an ID provider device according to an embodiment stores, for each service provider ID, policy information representing a user to which transmission of service data is permitted and policy information representing a user of a target in which transmission permission of service data is deleted. When a predetermined cycle comes or when a use status of the service provider device changes, the ID provider device acquires use status information of the service provider device transmitted from the service provider device, and updates a service use status storage unit based on the acquired use status information. When the service use status storage unit is updated, the ID provider device decides a deletion target account of each service provider ID.