Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomoyuki Haga0
Yuji Unagami0
Hideki Matsushima0
Manabu Maeda0
Motoji Ohmori0
Natsume Matsuzaki0
Yoshihiro Ujiie0
Date of Patent
October 30, 2018
0Patent Application Number
149300340
Date Filed
November 2, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In an authentication method according to the present disclosure, (1) a device transmits device history information with a CRL added thereto (hereinafter, device history information with added CRL) to a controller, (2) the controller transmits the device history information with added CRL to a server, and (3) if the version of the CRL included in the device history information with added CRL is older than the version of the CRL stored on the server, the server judges that the controller is unauthorized.
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