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.

公开(公告)号：US10404453B2

公开(公告)日：2019-09-03

申请号：US15400031

申请日：2017-01-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuji Unagami ,  Manabu Maeda ,  Hideki Matsushima ,  Tomoki Takazoe ,  Yoichi Masuda

IPC: H04L9/00 ,  H04L9/08 ,  G06F21/44 ,  H04Q9/00 ,  H04L9/06 ,  H04L9/32 ,  H04L29/06

Abstract: At least one controller in a group selects a coordinator that manages a group key to be used in common in the group from among controllers in the group in accordance with an attribute of the controllers. The selected coordinator generates a group key, performs mutual authentication with devices and the controllers in the group, and shares the generated group key with devices and controllers that have been successfully authenticated. The coordinator then generates encrypted data and authentication data by using the group key and simultaneously broadcasts a message including the encrypted data and the authentication data.

公开(公告)号：US09521444B2

公开(公告)日：2016-12-13

申请号：US14813121

申请日：2015-07-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Natsume Matsuzaki ,  Manabu Maeda ,  Yuji Unagami

IPC: H04N21/24 ,  H04N21/25 ,  H04N21/258 ,  H04N21/418 ,  H04N21/442 ,  H04N21/45 ,  H04N21/466 ,  H04N21/475 ,  H04N21/441 ,  H04N21/254 ,  H04N21/414 ,  H04N21/643

CPC classification number: H04N21/25866 ,  H04N21/252 ,  H04N21/254 ,  H04N21/25816 ,  H04N21/41407 ,  H04N21/441 ,  H04N21/44222 ,  H04N21/64322

Abstract: An information providing apparatus includes: an inputter that obtains log information and personal information corresponding thereto; a tentative ID giver that gives each tentative ID to the personal information at each predetermined timing; a first storage that stores correspondence-relationship information indicating a correspondence relationship between the personal information and the each tentative ID; a receiver that receives a request for outputting information including a requested tentative ID identified by a current tentative ID given and the one past timing when the requested ID was given; an information processor that determines, in accordance with the request, link-relationship information indicating a correspondence relationship between the requested tentative ID and the current tentative ID; a second storage that stores the determined link-relationship information; and an outputter that outputs first information including the requested tentative ID or second information indicating that first-information outputting is not permitted, based on the stored link-relationship information.

Abstract translation: 信息提供装置包括：输入器，其获取与其对应的日志信息和个人信息; 一个暂定的ID提供者，每个预定的时间给予个人信息的每个暂时的ID; 存储指示个人信息和每个暂时ID之间的对应关系的对应关系信息的第一存储器; 接收器，其接收输出信息的请求，所述请求包括当给定的当前临时ID所识别的请求的暂时ID和当所请求的ID被提供时的一个过去的定时; 根据该请求，确定指示所请求的暂时ID与当前暂时ID之间的对应关系的链接关系信息的信息处理器; 存储所确定的链路关系信息的第二存储器; 以及输出器，其基于所存储的链接关系信息，输出包括所请求的暂时ID的第一信息或指示不允许第一信息输出的第二信息。

公开(公告)号：US10135794B2

公开(公告)日：2018-11-20

申请号：US14923889

申请日：2015-10-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuji Unagami ,  Manabu Maeda ,  Hideki Matsushima

IPC: H04L29/06 ,  H04L9/30 ,  H04W12/04 ,  H04W12/08

Abstract: When a device is connected to a home gateway, if a common connection method is selected, a not-high-security connection method is inevitably selected even for a connection of a high-capability device. In a cryptographic communication system according to the present disclosure, it is possible to select a high-security connection method taking into account a processing capability of the device. Furthermore, the connection method is allowed to be updated and thus when the security level of the connection method hitherto selected is imperiled, the connection method may be updated so as to maintain a high security level.

公开(公告)号：US10013576B2

公开(公告)日：2018-07-03

申请号：US14946531

申请日：2015-11-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Manabu Maeda ,  Yuji Unagami

IPC: G06F21/62

CPC classification number: G06F21/6254

Abstract: A history information anonymization method is provided that includes associating each of a plurality of pieces of history information collected from a plurality of TVs in a current cycle with a temporary ID associated with a TV at a collection destination. The method also includes getting together a plurality of IDs into a plurality of groups such that for the IDs in each group, contents of history information associated in the current cycle and in a past cycle are identical. The method further includes judging whether each of the plurality of groups satisfies anonymity, and changing only some of the plurality of temporary IDs associated with the plurality of TVs, when it is judged that any of the plurality of groups does not satisfy anonymity.