US 12,231,422 B2
Information processing system, installation device, and computer program product
Toshio Ito, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Aug. 26, 2022, as Appl. No. 17/822,738.
Claims priority of application No. 2021-165400 (JP), filed on Oct. 7, 2021.
Prior Publication US 2023/0116684 A1, Apr. 13, 2023
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/0823 (2013.01) [H04L 63/0869 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An information processing system comprising:
an installation device;
a cyber physical system (CPS) device; and
an ownership certificate management server device,
wherein
the installation device comprises:
one or more first hardware processors configured to:
detect a communication state of a first network to which a first CPS server device is connected;
determine the first CPS server device or a second CPS server device as an initial registration destination, based on the communication state; and
transmit a notification indicating the initial registration destination to the CPS device, and the CPS device includes comprises:
one or more second hardware processors configured to:
store, upon receiving the notification from the installation device, the initial registration destination included in the notification in a memory unit; and
connect to the initial registration destination, to perform initial registration of the CPS device; and
the ownership certificate management server device comprises:
one or more third hardware processors configured to:
issue a first ownership certificate indicating that ownership of the CPS device has been transferred to the installation device; and
write the first ownership certificate into a physical medium, wherein
the one or more first hardware processors are further configured to:
read out the first ownership certificate from the physical medium, and
issue a second ownership certificate by appending information indicating that the ownership of the CPS device has been further transferred to the first or second CPS server device, to the first ownership certificate, and
the first or second CPS server device performs, upon accepting a connection from the CPS device, mutual authentication with the CPS device by using the second ownership certificate before the initial registration of the CPS device is performed.