US 12,314,456 B2
Communication control device, communication device, and communication system
Takahiro Yamaura, Kawasaki (JP); and Yuta Kobayashi, Ota (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Sep. 1, 2023, as Appl. No. 18/459,559.
Claims priority of application No. 2023-018483 (JP), filed on Feb. 9, 2023.
Prior Publication US 2024/0273244 A1, Aug. 15, 2024
Int. Cl. G06F 12/00 (2006.01); G06F 21/79 (2013.01); G06F 21/82 (2013.01)
CPC G06F 21/79 (2013.01) [G06F 21/82 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A communication control device included in a first communication device, the communication control device comprising:
a first memory; and
a circuit configured to:
acquire data transmitted from the first communication device to a second communication device or data transmitted from the second communication device to the first communication device, via a network;
perform an encryption process or a decryption process on the data by using key data in a case where the data belongs to a flow of communication between the first communication device and the second communication device to be encrypted or decrypted;
sequentially transfer key data in advance for each flow via an internal bus of the first communication device; and
store key data transferred in response to a request to the first memory,
wherein the circuit is configured to transfer key data based on the area to which key data can be transferred in the first memory.