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公开(公告)号：EP3940560A1
公开(公告)日：2022-01-19
申请号：EP21179928.3
申请日：2021-06-17
发明人： ZHENG, Jianxu
摘要： Embodiments of the present specification provide a biometric feature attack object and a biometric feature attack test system. The biometric feature attack object includes a substrate, a biometric feature attachment part, and a conductive part. The substrate includes a biometric feature carrying area and a pressing area, and the biometric feature carrying area and the pressing area are respectively disposed on two opposite sides of the substrate. The biometric feature attachment part is disposed in the biometric feature carrying area, and the conductive part is disposed in the pressing area or the biometric feature carrying area.
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公开(公告)号：EP3937424A1
公开(公告)日：2022-01-12
申请号：EP21182268.9
申请日：2021-06-29
发明人： WEI, Changzheng , YAN, Ying , ZHANG, Hui
摘要： One or more embodiments of the present specification provide a blockchain data processing method and apparatus based on cloud computing. The method includes: initiating, by a blockchain integrated station, a ciphertext request to a cloud server, where the cloud server obtains a plaintext request by decrypting the ciphertext request in a maintained trusted execution environment, and the plaintext request includes relevant information of to-be-processed data; obtaining, by the blockchain integrated station, an execution result returned by the cloud server, where the execution result is obtained by the cloud server executing a relevant operation on the to-be-processed data according to the relevant information.
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公开(公告)号：EP3934162A1
公开(公告)日：2022-01-05
申请号：EP21181144.3
申请日：2021-06-23
发明人： LI, Kang , DENG, Fuxi , LIAO, Xiaojun
IPC分类号： H04L9/32
摘要： The embodiments of this specification provide a blockchain consensus method, a blockchain consensus device, and an electronic equipment, wherein the method comprises: initiating, by a consensus master node of a blockchain, a consensus proposal for at least one pending-consensus transaction in a transaction pool of the consensus master node, wherein the consensus proposal carries a transaction hash list, and the transaction hash list comprises a transaction hash of the at least one pending-consensus transaction; matching and selecting, by a target consensus backup node of the blockchain from a transaction pool of the target consensus backup node, the at least one pending-consensus transaction corresponding to the transaction hash list, wherein each consensus node of the blockchain has the same transaction hash calculation logic; and obtaining, by the target consensus backup node, transaction information of the matched at least one pending-consensus transaction from the transaction pool of the target consensus backup node, thereby executing a process flow of the consensus proposal based on the transaction information.
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公开(公告)号：EP3933647A1
公开(公告)日：2022-01-05
申请号：EP21182641.7
申请日：2021-06-30
发明人： LI, Shuai
IPC分类号： G06F21/64
摘要： The present specification discloses a consensus method and system in a consortium blockchain, where the method includes the following: When a first consensus node in a consensus network of the consortium blockchain does not complete a consensus operation on target data on which a consensus is to be reached within a predetermined time period, the first consensus node broadcasts a view change (ViewChange) message in the consensus network based on a P set and a Q set constructed from a received ECHO message. For a received ViewChange message, a second consensus node sends a view change acknowledgment (ViewChangeACK) message corresponding to the received ViewChange message to a second consensus primary node, where the second consensus primary node is a consensus primary node after the first consensus primary node. When the second consensus primary node receives N-f-2 ViewChangeACK messages sent by consensus nodes in the consensus network, the second consensus primary node obtains a plurality of identical P sets and a plurality of identical Q sets in the received ViewChange message. The second consensus primary node makes a view change decision based on the received ViewChange message.
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25.发明公开
公开(公告)号：EP3933640A1
公开(公告)日：2022-01-05
申请号：EP21178984.7
申请日：2021-06-11
发明人： LIAO, Xiaojun
摘要： Embodiments of this specification provide a consensus node changing method and apparatus based on a Honey Badger Byzantine Fault Tolerance (BFT) consensus mechanism. The method includes: when receiving a transaction for changing a blockchain's consensus node, executing, by a consensus node of the blockchain, the transaction to trigger a smart contract to update a consensus node configuration list of the blockchain, where the consensus node configuration list includes serial numbers allocated to consensus nodes based on a serial number allocation rule specified by the smart contract; associating, by the consensus node based on serial numbers of consensus nodes recorded in the updated consensus node configuration list, another consensus node of the blockchain with at least two state machines locally configured in the consensus node, where each of the state machines is configured with states corresponding to a consensus phase in the Honey Badger BFT consensus mechanism and configured to perform state switching based on a control signal to perform a consensus operation specified by the consensus phase corresponding to a current state of the state machine; and processing, by the consensus node based on the state machines that have been configured locally, a consensus proposal initiated by one or more of the other consensus nodes associated with the state machines.
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公开(公告)号：EP3933625A1
公开(公告)日：2022-01-05
申请号：EP21181518.8
申请日：2021-06-24
发明人： SONG, Yitao
摘要： Implementations of the present specification disclose an information verification method, apparatus, and device. The method includes: receiving a communication verification request of a user; obtaining first biometric feature data inputted by the user, and performing biometric feature verification on the user based on the first biometric feature data; obtaining pre-stored benchmark biometric feature data of the user if the biometric feature verification on the user succeeds, and sending first check information corresponding to the benchmark biometric feature data and a target token corresponding to a pre-stored communication account of the user to a serving end, so that the serving end determines a verification result of the communication account based on the first check information, the target token, and second check information that corresponds to the pre-stored benchmark biometric feature data of the user; and receiving the verification result sent by the serving end, and determining, based on the verification result, whether the communication account of the user is abnormal.
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公开(公告)号：EP3841549A2
公开(公告)日：2021-06-30
申请号：EP20738789.5
申请日：2020-04-22
发明人： ZHANG, Yuan , YU, Benquan , LI, Yize , YAN, Wenyuan , YANG, Xinying
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公开(公告)号：EP3799649A2
公开(公告)日：2021-04-07
申请号：EP20725755.1
申请日：2020-02-03
发明人： LU, Xuming , SHAO, Jiayi , YE, Guojun
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公开(公告)号：EP3799635A2
公开(公告)日：2021-04-07
申请号：EP20725754.4
申请日：2020-03-11
发明人： SUN, Shanlu , LI, Shubo
IPC分类号： G06F11/30
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公开(公告)号：EP3794483A2
公开(公告)日：2021-03-24
申请号：EP20725741.1
申请日：2020-02-03
发明人： LU, Xuming , ZHOU, Hui , YE, Guojun
IPC分类号： G06F21/60
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