公开(公告)号：US10601843B2

公开(公告)日：2020-03-24

申请号：US15578760

申请日：2016-06-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masato Tanabe ,  Jun Anzai ,  Yoshihiko Kitamura ,  Seiji Sakaki ,  Yoshihiro Ujiie ,  Hideki Matsushima

IPC: H04L29/06 ,  H04L12/40 ,  H04W4/48

Abstract: A communication device includes: a communication section that transmits and receives a message in a network; an acquisition unit that acquires state information on a state of an object for which the network is provided; an estimation unit that estimates the state of the object based on the state information acquired in the acquisition unit; a setting unit that sets a filtering rule based on the state estimated in the estimation unit; and a filter unit that executes filtering processing for the message in accordance with the filtering rule set in the setting unit.

公开(公告)号：US10116454B2

公开(公告)日：2018-10-30

申请号：US14930034

申请日：2015-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomoyuki Haga ,  Motoji Ohmori ,  Natsume Matsuzaki ,  Hideki Matsushima ,  Yuji Unagami ,  Manabu Maeda ,  Yoshihiro Ujiie

IPC: H04L9/32 ,  G06F21/44 ,  G06F21/33 ,  H04L29/06 ,  H04L9/14 ,  H04L9/30

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.

公开(公告)号：US09729332B2

公开(公告)日：2017-08-08

申请号：US14726633

申请日：2015-06-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuji Unagami ,  Motoji Ohmori ,  Natsume Matsuzaki ,  Hideki Matsushima ,  Tomoyuki Haga ,  Manabu Maeda ,  Yoshihiro Ujiie

IPC: H04L29/06 ,  H04L9/32 ,  G06F21/44 ,  G06F21/33

CPC classification number: H04L9/3268 ,  G06F21/33 ,  G06F21/44 ,  H04L63/0823

Abstract: An authentication system according to the present disclosure includes a first controller connected to a first server via a first network, a second controller connected to a second server via a second network, and a device. The device compares a next issue date described in a first certificate revocation list acquired from the first controller and an issue date described in a second certificate revocation list acquired from the second controller thereby determining whether the first controller is invalid or not.

公开(公告)号：US10713106B2

公开(公告)日：2020-07-14

申请号：US15770182

申请日：2016-12-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masato Tanabe ,  Jun Anzai ,  Manabu Maeda ,  Yoshihiro Ujiie ,  Takeshi Kishikawa

IPC: G06F11/00 ,  G06F11/07 ,  H04L12/24 ,  H04L12/40 ,  H04L12/26 ,  H04W4/48 ,  H04L29/06 ,  H04L29/08

Abstract: A communication unit receives a message in a network. A first anomaly detector detects an anomalous message by detecting values of a plurality of monitoring items from the message received by the communication unit and determining whether each of the detected values of the plurality of monitoring items is inside a corresponding first reference range and a corresponding second reference range. The second reference range is narrower than the first reference range. The first anomaly detector detects the message as the anomalous message, when any of the detected values is outside the first reference range, and detects the message as the anomalous message, when any of the detected values is inside the first reference range and is outside the second reference range and when a predetermined rule is satisfied.

公开(公告)号：US10411904B2

公开(公告)日：2019-09-10

申请号：US15164911

申请日：2016-05-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Manabu Maeda ,  Natsume Matsuzaki ,  Motoji Ohmori ,  Hideki Matsushima ,  Tomoyuki Haga ,  Yuji Unagami ,  Yoshihiro Ujiie

IPC: H04L9/32 ,  H04L29/06 ,  H04L9/00

Abstract: A first device, upon detecting participation in an authentication system, transmits new and old identification information of a first certificate revocation list that the first device manages to a second device. In a case where the new and old identification information of a second certificate revocation list that the second device manages is older than the new and old identification information of the received first certificate revocation list, the second device transmits a transmission request for the first certificate revocation list to the first device. Upon receiving the transmission request for the first certificate revocation list from the second device, the first device transmits the first certificate revocation list to the second device. the second device updates the second certificate revocation list using the received first certificate revocation list.