摘要 |
An authentication apparatus receives an authority delegating request from an apparatus, acquires information of authorities possessed by the user from a storage unit, presents information of the acquired authorities to the user, and receives an instruction indicating which of the authorities possessed by the user is delegated to the apparatus. A storage unit stores, when the instruction to delegate the authority to the apparatus is received, an identifier required to uniquely identify the instruction and the authority instructed by the user to delegate, in association with each other. Authentication information indicating delegation of the authority is transmitted to the apparatus based on the instruction from the user.
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