公开(公告)号：US20190342086A1

公开(公告)日：2019-11-07

申请号：US16511293

申请日：2019-07-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuji UNAGAMI ,  Manabu MAEDA ,  Hideki MATSUSHIMA ,  Tomoki TAKAZOE ,  Yoichi MASUDA

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

Abstract: An authentication method for a group of devices connected to a network includes selecting the first controller as a coordinator, the coordinator being configured to manage a group key to be used in common in the group. The method includes generating the group key, and performing first mutual authentication and second mutual authentication. The method also includes sharing the group key with each device for which the first mutual authentication has been successful, and sharing the group key with each second controller for which the second mutual authentication has been successful. The method further includes encrypting transmission data by using the group key to generate encrypted data, generating, authentication data by using the group key, and simultaneously broadcasting a message to each device for which the first mutual authentication has been successful and each second controller for which the second mutual authentication has been successful.

公开(公告)号：US20170126058A1

公开(公告)日：2017-05-04

申请号：US15403377

申请日：2017-01-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideki MATSUSHIMA ,  Natsume MATSUZAKI ,  Tomoyuki HAGA

IPC: H02J13/00 ,  G01D4/00

CPC classification number: H02J13/0079 ,  G01D4/004 ,  Y02B90/242 ,  Y02B90/244 ,  Y04S20/322 ,  Y04S20/327 ,  Y10T307/549 ,  Y10T307/696 ,  Y10T307/944

Abstract: A smart meter includes: a power supply control unit which causes stoppage of a supply of power passing through the smart meter to an television and so on, when an RD command to stop the supply is received; a first communication unit which performs a first communication through which the RD command is received; a second communication unit which performs a second communication; and a communication control unit which: causes the performance of the first communication before the RD command is received; and prohibit the performance of the first communication and cause only the performance of the second communication, after the RD command is received.

公开(公告)号：US20150333571A1

公开(公告)日：2015-11-19

申请号：US14813196

申请日：2015-07-30

Applicant: Panasonic Intellectual Property Management Co. Ltd.

Inventor： Hideki MATSUSHIMA ,  Natsume MATSUZAKI ,  Tomoyuki HAGA

IPC: H02J13/00 ,  G01D4/00

CPC classification number: H02J13/0079 ,  G01D4/004 ,  Y02B90/242 ,  Y02B90/244 ,  Y04S20/322 ,  Y04S20/327 ,  Y10T307/549 ,  Y10T307/696 ,  Y10T307/944

Abstract: A smart meter includes: a power supply control unit which causes stoppage of a supply of power passing through the smart meter to an television and so on, when an RD command to stop the supply is received; a first communication unit which performs a first communication through which the RD command is received; a second communication unit which performs a second communication; and a communication control unit which: causes the performance of the first communication before the RD command is received; and prohibit the performance of the first communication and cause only the performance of the second communication, after the RD command is received.

Abstract translation: 智能电表包括：当接收到停止供电的RD命令时，电源控制单元使得通过智能电表的电力供应停止到电视机等等; 第一通信单元，其执行接收到RD命令的第一通信; 执行第二通信的第二通信单元; 以及通信控制单元，其在接收到RD命令之前使所述第一通信的执行; 并且在接收到RD命令之后禁止执行第一通信并且仅引起第二通信的执行。

公开(公告)号：US20190386989A1

公开(公告)日：2019-12-19

申请号：US16552445

申请日：2019-08-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuji UNAGAMI ,  Manabu MAEDA ,  Tomoki TAKAZOE ,  Yoichi MASUDA ,  Hideki MATSUSHIMA

IPC: H04L29/06 ,  H04L9/32 ,  H04L9/30 ,  H04L9/14

Abstract: A first controller generates a first group key, executes first mutual authentication with devices within a group, and shares the first group key with the devices that have succeeded in first mutual authentication. When a second controller joins the group, the first controller decides a coordinator that manages a group key used in common in the group. The first controller executes second mutual authentication with the coordinator, and shares the first group key with the coordinator when the second mutual authentication is successful. The coordinator performs encrypted communication within the group using the first group key, generates a second group key when valid time of the first group key is equal to or smaller than a predetermined value, executes third mutual authentication with the devices and a third controller, and updates the first group key of the devices and the third controller that have succeeded in the third authentication.

公开(公告)号：US20150372992A1

公开(公告)日：2015-12-24

申请号：US14834904

申请日：2015-08-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideki MATSUSHIMA ,  Teruto HIROTA ,  Naoyoshi OTSUBO ,  Koichi MORIOKA ,  Natsume MATSUZAKI ,  Norio SANADA

IPC: H04L29/06 ,  G06F21/44 ,  H04W12/04 ,  G06F21/12 ,  G06F21/86

CPC classification number: H04L63/0428 ,  G06F21/10 ,  G06F21/121 ,  G06F21/123 ,  G06F21/125 ,  G06F21/14 ,  G06F21/445 ,  G06F21/86 ,  H04W12/04 ,  H04W12/06

Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103). The secure device (103) receives the second program from the information processing terminal (102), decrypts the second program using a program key stored in a key storing unit (520), and executes the second program.

Abstract translation: 内容再现系统包括信息处理终端（102）和安全装置（103）。 信息处理终端（102）从应用分发服务器（113）接收版权保护应用程序（315）。 版权保护应用程序包括具有在信息处理终端（102）中可执行的第一执行格式的第一程序和具有与第一执行格式不同的第二执行格式并可在安全装置（103）中执行的第二程序。 第二程序用保存在安全装置（103）中的程序键（515）进行加密。 通过提取并执行第一程序，信息处理终端（102）提取第二程序并将第二程序发送给安全装置（103）。 安全装置（103）从信息处理终端（102）接收第二程序，使用存储在密钥存储单元（520）中的程序密钥对第二程序进行解密，并执行第二程序。

公开(公告)号：US20180241739A1

公开(公告)日：2018-08-23

申请号：US15753148

申请日：2016-08-04

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tomoki TAKAZOE ,  Yoichi MASUDA ,  Hideki MATSUSHIMA ,  Yuji UNAGAMI

IPC: H04L29/06 ,  H04L9/32

CPC classification number: H04L63/0823 ,  G06F21/44 ,  G06F21/445 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32 ,  H04L9/3263 ,  H04L63/0869 ,  H04L63/0876 ,  H04L63/102

Abstract: A new controller (supporting device authentication) is a controller which performs encrypted communication with a device which has succeeded in mutual authentication using an electronic certificate, and the controller includes: a determining unit that determines whether or not a communication target device with which communication is to be performed is an authentication support device that supports the mutual authentication; a functional restriction unit that, when the communication target device is determined not to be the authentication support device by the determining unit, imposes a functional restriction on one or more functions of the communication target device which are operable by the new controller (supporting device authentication); and a communication unit which performs communication in plain text with the communication target device with the functional restriction imposed by the functional restriction unit.