US 12,244,607 B2
Selection method, selection system, and recording medium
Manabu Maeda, Osaka (JP); and Daisuke Kunimune, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Jun. 14, 2022, as Appl. No. 17/840,224.
Application 17/840,224 is a continuation of application No. PCT/JP2020/046435, filed on Dec. 11, 2020.
Claims priority of application No. 2019-231730 (JP), filed on Dec. 23, 2019.
Prior Publication US 2022/0311781 A1, Sep. 29, 2022
Int. Cl. H04L 9/40 (2022.01); B60R 16/023 (2006.01); H04L 67/12 (2022.01)
CPC H04L 63/123 (2013.01) [B60R 16/023 (2013.01); H04L 63/126 (2013.01); H04L 63/1416 (2013.01); H04L 63/1425 (2013.01); H04L 67/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A selection method for selecting a reference message to be used to detect unauthorized communication in an in-vehicle network system including a network and one or more electronic control units connected to the network, the reference message being used as a reference for determining whether a message sent to the network is anomalous, the selection method comprising:
storing candidate information of one or more reference message candidates of the reference message;
first selecting, based on the candidate information of the one or more reference message candidates stored in the storing operation, a rule for selecting the reference message from among a plurality of rules; and
second selecting the reference message from among the one or more reference message candidates using the rule selected in the first selecting operation, wherein the first selecting operation includes
calculating a degree of appropriateness for each of the plurality of rules, and
selecting, based on the degree of appropriateness calculated for each of the plurality of rules, the rule for selecting the reference message, the degree of appropriateness indicating a level of appropriateness of selecting the reference message from among the one or more reference message candidates.