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公开(公告)号：US20170169241A1
公开(公告)日：2017-06-15
申请号：US15366129
申请日：2016-12-01
发明人： YUJI UNAGAMI , NATSUME MATSUZAKI , SHOTA YAMADA , NUTTAPONG ATTRAPADUNG , TAKAHIRO MATSUDA , GOICHIRO HANAOKA
CPC分类号： G06F21/6218 , G06F12/1408 , G06F2212/1052 , G09C1/00 , H04L9/008 , H04L9/3026 , H04L63/0281
摘要： A data search method of a first device storing multiple sets of privacy data acquired from multiple persons and multiple reference features corresponding to the multiple sets of privacy data, where the multiple reference features each are expressed by an n-dimensional vector, includes receiving first encrypted features from a second device connected to the first device, generating multiple second converted features by a second conversion of the multiple reference features, generating of multiple second encrypted features by encrypting the multiple second converted features using inner product encryption, acquiring multiple inner product values by performing inner product computation of each of the first encrypted features and the multiple second encrypted features, determining whether or not the first features and the first reference features are similar, and transmitting of first privacy data corresponding to the first reference features out of the multiple sets of privacy data to the second device.
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公开(公告)号：US20170111357A1
公开(公告)日：2017-04-20
申请号：US15391901
申请日：2016-12-28
发明人： YUJI UNAGAMI , MANABU MAEDA , HIDEKI MATSUSHIMA
CPC分类号： H04L63/0869 , G06F21/445 , G06F2221/2107 , G06F2221/2151 , H04L9/0631 , H04L9/0637 , H04L9/0833 , H04L9/0861 , H04L9/0891 , H04L9/3242 , H04L9/3263 , H04L9/3273 , H04L63/0428
摘要： A controller and a first device perform mutual authentication, create a group key, and share the group key, and the first device is set as a reference device. Thereafter, at a group key update timing when the controller and the reference device update the group key to an updated group key, the controller and a second device, which is not the reference device, perform mutual authentication, and the updated group key is also shared by the second device. Further, encrypted data is generated by encrypting transmission data by using the group key, a MAC (Message Authentication Code) is generated from the transmission data, a header, a transmission source address, and a transmission destination address, and a message that includes the encrypted data, the header, the transmission source address, the transmission destination address, and the MAC is broadcast.
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公开(公告)号：US20210005041A1
公开(公告)日：2021-01-07
申请号：US17025230
申请日：2020-09-18
发明人： YUJI UNAGAMI , AKIRA TANAKA , JUNICHIRO SOEDA
摘要： A method for controlling one of a plurality of voting servers in an electronic voting system is provided. The method includes receiving, from a terminal, transaction data including voting data, and generating, using a processor, a block including the transaction data and dummy transaction data. The dummy transaction data including dummy voting data that is not associated with the voting data. The method further connects the generated block to a blockchain, the blockchain being stored in a memory.
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公开(公告)号：US20190019367A1
公开(公告)日：2019-01-17
申请号：US16026125
申请日：2018-07-03
发明人： YUJI UNAGAMI , JUNICHIRO SOEDA
摘要： An authentication server authenticates a voter using authentication data including a first identifier (ID) associated with the voter and authentication information regarding the voter. The authentication server further synchronizes a first blockchain. The first blockchain includes first transaction data indicating that the voter has been authenticated with one or more of other authentication servers. A voting server receives, from a terminal, voting data including a second ID associated with a vote cast by the voter and voting information indicating the vote. The voting server synchronizes a second blockchain including, as second transaction data, the voting information included in the voting data with one or more of other voting servers. The terminal transmits the authentication data to the authentication server and, after the authentication is successfully completed, transmits the voting data to the voting server.
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公开(公告)号：US20180294991A1
公开(公告)日：2018-10-11
申请号：US16002006
申请日：2018-06-07
IPC分类号： H04L12/46 , B60R16/023 , B60R25/00 , G06F11/30
摘要： A security device connected to at least one bus in a vehicle is provided. The security device determines, with regard to a frame received from the at least one bus, whether predetermined conditions are satisfied to determine whether the frame is a suspect of being an attack frame. The security device transmits, a determination request to an external device outside of the vehicle in a case where the predetermined conditions are satisfied, and obtains determination results from the external device in accordance with the determination request. The security device outputs first presentation information in the case where the predetermined conditions are satisfied, and outputs second presentation information in a case where the determination results are obtained from the external device.
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6.发明申请IN-VEHICLE NETWORK SYSTEM, FRAUD-DETECTION ELECTRONIC CONTROL UNIT, AND FRAUD-DETECTION METHOD 审中-公开车内网络系统，防盗侦测电子控制单元及防盗方法公开(公告)号：US20170026386A1
公开(公告)日：2017-01-26
申请号：US15285706
申请日：2016-10-05
发明人： YUJI UNAGAMI , HIDEKI MATSUSHIMA , TOMOYUKI HAGA , MANABU MAEDA , YOSHIHIRO UJIIE , TAKESHI KISHIKAWA
CPC分类号： H04L63/14 , B60R16/023 , G06F21/577 , G06F21/606 , G06F21/71 , G06F21/85 , G06F2221/2101 , H04L12/28 , H04L63/20 , H04L67/12 , H04W4/40
摘要： In a fraud-detection method for use in an in-vehicle network system including a plurality of electronic control units (ECUs) that exchange messages on a plurality of buses, a plurality of fraud-detection ECUs each connected to a different one of the buses, and a gateway device, a fraud-detection ECU determines whether a message transmitted on a bus connected to the fraud-detection ECU is malicious by using rule information stored in a memory. The fraud-detection ECU transmits an error message including a message identifier of a message determined to be malicious. The gateway device receives updated rule information transmitted to a first bus among the buses, selects a second bus different from the first bus, and transfers the updated rule information only to the second bus. A fraud-detection ECU connected to the second bus acquires the updated rule information and updates the rule information stored therein by using the updated rule information.
摘要翻译： 在用于车载网络系统的欺诈检测方法中，包括在多个总线上交换消息的多个电子控制单元（ECU），多个欺诈检测ECU，各自连接到不同的总线 以及网关装置，欺诈检测ECU通过使用存储在存储器中的规则信息来判断在与欺诈检测ECU连接的总线上发送的消息是否是恶意的。 欺诈检测ECU发送包括确定为恶意的消息的消息标识符的错误消息。 网关装置接收总线中发送到第一总线的更新的规则信息，选择与第一总线不同的第二总线，并将更新的规则信息传送到第二总线。 连接到第二总线的欺诈检测ECU获取更新的规则信息，并通过使用更新的规则信息来更新其中存储的规则信息。
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公开(公告)号：US20160149908A1
公开(公告)日：2016-05-26
申请号：US15012913
申请日：2016-02-02
发明人： YUJI UNAGAMI , MANABU MAEDA , HIDEKI MATSUSHIMA
IPC分类号： H04L29/06
CPC分类号： H04L63/0869 , H04L9/006 , H04L9/0833 , H04L9/3268 , H04L9/3273 , H04L63/061 , H04L63/062 , H04L63/065 , H04L63/068 , H04L63/0823 , H04L63/0876
摘要： A system performs mutual authentication between a controller and a first device, creates a group key, shares the group key, and sets the first device as a reference device. The system performs mutual authentication between the controller and a second device, and shares the group key with the second device. Thereafter, the system, performs mutual authentication between the controller and the first device, updates the group key, and shares the updated group key between the controller and the first device. At a group key update timing when the group key is updated, the system performs mutual authentication between the controller and the second device, and shares the updated group key with the second device.
摘要翻译： 系统在控制器和第一设备之间执行相互认证，创建组密钥，共享组密钥，并将第一设备设置为参考设备。 系统在控制器和第二设备之间执行相互认证，并与第二设备共享组密钥。 此后，系统在控制器和第一设备之间执行相互认证，更新组密钥，并且在控制器和第一设备之间共享更新的组密钥。 在组密钥更新时的组密钥更新定时，系统在控制器和第二设备之间执行相互认证，并与第二设备共享更新的组密钥。
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公开(公告)号：US20200380810A1
公开(公告)日：2020-12-03
申请号：US16996184
申请日：2020-08-18
发明人： YUJI UNAGAMI , JUNICHIRO SOEDA
摘要： A method controls one of a plurality of voting servers in an electronic voting system. The method includes receiving, from one or more terminals, one or more voting data including a first identifier (ID) associated with a vote cast by a voter and voting information indicating the vote. The method also includes generating a block including the one or more voting data when the one or more voting data satisfies a predetermined criterion of anonymization, and connecting the block to a blockchain stored in a memory.
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9.发明申请公开(公告)号：US20190165946A1
公开(公告)日：2019-05-30
申请号：US16264804
申请日：2019-02-01
发明人： YUJI UNAGAMI , MANABU MAEDA , TOMOYUKI HAGA , HIDEKI MATSUSHIMA , JUN ANZAI
摘要： A method for verifying content data to be used in a vehicle is provided. The method includes acquiring content data, acquiring, from partial data divided from the content data, a respective plurality of first hash values, acquiring a signature generated by using the first hash values and a key, acquiring state information that indicates a state of a vehicle, determining an integer N that is greater than or equal to one based on the acquired state information, generating, from N pieces of partial data included in the partial data, respective second hash values, verifying the content data by using each of (a) a subset of the plurality of first hash values respectively generated from partial data other than the N pieces of partial data, (b) the second hash values, and (c) the signature, and outputting information that indicates a result of the verifying.
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10.发明申请公开(公告)号：US20190155258A1
公开(公告)日：2019-05-23
申请号：US16168686
申请日：2018-10-23
发明人： YUJI UNAGAMI , TAKUJI HIRAMOTO , TATSUMI OBA , TOMOHIRO ODA , NAOKI OCHI
IPC分类号： G05B19/418 , G06F11/34 , G06F9/54 , G06F11/14
摘要： An integration server manages production in a manufacturing line that includes a first stage and a second stage carried out after the first stage. The integration server includes a communicator that acquires a first production log and a second production log. The first production log includes a first production count of processing objects in the first stage. The second production log includes the number of processing objects in the second stage. The integration server also includes an irregularity detector that detects the presence of irregularity in the first production log and the second production log on the basis of the first production count and the number of the processing objects in the second stage.
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