Patent ID: 11954182
Assignee: BUFFALO INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The cloud management server according to claim 1, wherein
the processing circuitry is configured to:
receive, for a second license subscriber or a second license sharer identified by information in the license database from a first owner of a second storage device, a setting of an access right to data in the cloud storage relating to second license information stored in association with the second license information in which the first owner of the second storage device is the second license subscriber or the second license sharer and to hold the setting;
identify, from the second license subscriber or the second license sharer identified by the information in the license database, the second license information associated with information identifying the second license subscriber or the second license sharer as concerned information and, in a case where an access request to data in the cloud storage relating to the concerned information is received, determine whether or not the second license subscriber or the second license sharer who is a source of the access request is the first owner of the second storage device corresponding to the data in the cloud storage relating to the concerned information; and
in a case where the second license subscriber or the second license sharer who is the source of the access request is not the first owner of the second storage device, refer to the setting of the access right to determine whether or not the source of the access request has an access right to the data, and in a case where the source of the access request has the access right, receive a decryption key from the source of the access request to provide the source of the access request with data decoded using the decryption key corresponding to the data encrypted using an encryption key set correspondingly to the second storage device.