Patents by Inventor Hu Lan

Hu Lan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220311607
    Abstract: This application discloses a key generation method and apparatus, a device, and a medium. The method includes transmitting a key negotiation request to a consensus node in a blockchain network, to request a key verification parameter; negotiating a collaboration key pair with a second device to obtain a first private key component and a shared public key in the collaboration key pair; signing the key verification parameter by using the first private key component, to obtain a first signature component; generating transaction data according to the first signature component and the key verification parameter; transmitting the transaction data to the second device. The consensus node performs a consensus on the negotiation result data, and after the negotiation result data passes the consensus, submits the negotiation result data to a blockchain of the blockchain network.
    Type: Application
    Filed: April 13, 2022
    Publication date: September 29, 2022
    Inventors: Maocai LI, Zongyou WANG, Jinsong ZHANG, Huankun HUANG, Kaiban ZHOU, Yifang SHI, Qucheng LIU, Pan LIU, Hu LAN, Changqing YANG, Gengliang ZHU
  • Patent number: 11442912
    Abstract: Embodiments of this application provide a blockchain-based information processing method, including: obtaining an original index information set, the original index information set comprising at least one piece of original index information, each piece of original index information comprising plaintext sensitive content; obtaining information in to-be-matched blocks in a blockchain system, the information comprising information content and an information index, the information content having a correspondence with the information index; matching the information content in the information by using the original index information set, to obtain a matching result; and determining a variant index information set when the matching result indicates that the matching succeeds, the variant index information set comprising at least one piece of variant index information, the variant index information comprising the information index corresponding to the information content in the information.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: September 13, 2022
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Maocai Li, Zongyou Wang, Hu Lan
  • Publication number: 20220269670
    Abstract: A data processing method for blockchain technology verifies transactions. Transaction operations on a blockchain are more consistent and the accuracy of transaction data on the blockchain is improved. A first transaction operation corresponding to a first transaction request on the blockchain, and a second transaction operation corresponding to a second transaction request on the blockchain are both performed. When an operation result corresponding to either the first transaction operation and/or the second transaction operation is a failure, then the processing on a transaction operation can be rolled back to a successful operation.
    Type: Application
    Filed: May 6, 2022
    Publication date: August 25, 2022
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Maocai Li, Zongyou Wang, Yifang Shi, Gengliang Zhu, Hu Lan, Huankun Huang
  • Publication number: 20220272038
    Abstract: Data routing with a forwarding process of service data can avoid problems of offline nodes. The forwarding process for data routing can also improve the fault tolerance and service data can be quickly transmitted to a corresponding data pool. Using consensus nodes and a target data pool with routing and forwarding tables along with subtrees from a trie tree can improve the routing. Subtrees may be obtained by splitting the trie tree from a root node by using a first leaf node as a benchmark, which correspondingly represents a data pool of the consensus node. The routing and forwarding table is configured to record addresses of data pools correspondingly represented by a preset quantity of leaf nodes in a corresponding subtree.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 25, 2022
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Maocai Li, Zongyou Wang, Jinsong Zhang, Huankun Huang, Kaiban Zhou, Yifang Shi, Qucheng Liu, Pan Liu, Hu Lan, Changqing Yang, Gengliang Zhu, Li Kong
  • Publication number: 20220245173
    Abstract: A blockchain-based data synchronization method, executed by a first service node, includes: acquiring target block data having a minimum block height that is greater than a first local block height, the first local block height being a maximum block height of local block data of the first service node before the first service node acquires the target block data; determining a block height of missing block data according to a block height of the target block data and the first local block height, the block height of the missing block data being less than the minimum block height of the target block data and greater than the first local block height; and requesting a target service node to synchronize the missing block data according to the block height of the missing block data.
    Type: Application
    Filed: April 12, 2022
    Publication date: August 4, 2022
    Inventors: Huankun HUANG, Zongyou WANG, Pan LIU, Jinsong ZHANG, Gengliang ZHU, Yifang SHI, Zhiyong LIAO, Kaiban ZHOU, Qucheng LIU, Changqing YANG, Hu LAN
  • Publication number: 20220247573
    Abstract: This application relates to a digital signature generation method and apparatus, a computer device, and a storage medium. The method includes: obtaining a message, and calculating a message hash value of the message; obtaining a signature private key, stitching the signature private key and the message hash value to obtain stitched information, calculating a hash value corresponding to the stitched information, and generating a digital signature corresponding to the message by using the hash value corresponding to the stitched information, the message hash value, and the signature private key. That is, generating a digital signature corresponding to a message by using a hash value corresponding to stitched information, a message hash value of the message, and a signature private key can improve security of the generated digital signature. This application can improve security in a blockchain consensus process.
    Type: Application
    Filed: April 15, 2022
    Publication date: August 4, 2022
    Inventors: Maocai LI, Zongyou WANG, Yifang SHI, Zhiyong LIAO, Hu LAN, Gengliang ZHU
  • Publication number: 20220237153
    Abstract: Embodiments of this application provide a synchronization processing method, apparatus, and device, and a medium. The method includes obtaining a skeleton set and a synchronization task set, the skeleton set being used for storing M blocks to be synchronized by the first node device, the skeleton set comprising P skeletons, the synchronization task set comprising P synchronization tasks, the P skeletons being of a one-to-one correspondence to the P synchronization tasks, and M and P both being positive integers; selecting a second node device from the candidate node set, the second node device being a candidate node device in the candidate node set; concurrently transmitting synchronization tasks in the synchronization task set to the second node device, the second node device performing the synchronization tasks and returning the M blocks; and filling the M blocks into the skeletons in the skeleton set.
    Type: Application
    Filed: April 14, 2022
    Publication date: July 28, 2022
    Inventors: Maocai LI, Zongyou WANG, Jinsong ZHANG, Kaiban ZHOU, Yifang SHI, Huankun HUANG, Qucheng LIU, Pan LIU, Hu LAN, Changqing YANG, Gengliang ZHU, Li KONG
  • Publication number: 20210297242
    Abstract: The present disclosure includes a method for processing distributed data. In the method, the distributed data of a first main body is obtained. The distributed data has a transfer identifier. The distributed data is transferred, in response to a second main body different from the first main body, to a management address based on the transfer identifier when the distributed data meets a first condition. The first condition is that the distributed data includes abnormal information. The distributed data transferred to the management address freezes transfer of the distributed data by the first main body.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 23, 2021
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Maocai LI, Zongyou WANG, Hu LAN, Yifang SHI
  • Publication number: 20210286900
    Abstract: Aspects of the disclosure provide a method for displaying blockchain data, a blockchain browser, a user node, and a medium. The method can include transmitting a blockchain data query request, and receiving blockchain data obtained through query in response to the blockchain data query request. Further, the method can include obtaining filtered blockchain data, the filtered blockchain data being generated after illegal content in the blockchain data is filtered out based on a filtering rule, and displaying the filtered blockchain data. In embodiments of this disclosure, the display of the illegal content in the blockchain data can be automatically skipped.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Maocai LI, Zongyou WANG, Kaiban ZHOU, Jinsong ZHANG, Hu LAN, Li KONG, Changqing YANG, Yifang SHI
  • Publication number: 20210288819
    Abstract: An identity certificate may be issued to a blockchain node. The issuance may include issuing a first identity certificate to a first terminal and receiving a second identity certificate issuance request that is from the first terminal. A second identity certificate may be issued to the first terminal, and a third identity certificate issuance request is received from the second terminal. A third identity certificate is issued to the second terminal, so that the second terminal forwards the third identity certificate to the third terminal.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Mao Cai LI, Zong You WANG, Kai Ban ZHOU, Chang Qing YANG, Hu LAN, Li KONG, Jin Song ZHANG, Yi Fang SHI, Geng Liang ZHU, Qu Cheng LIU, Qiu Ping CHEN
  • Publication number: 20210263765
    Abstract: Embodiments of this disclosure disclose a block processing method, a node, and a system, to improve the speed of block generation and the performance of transaction processing.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Pan LIU, Maocai LI, Zongyou WANG, Hu LAN, Yifang SHI
  • Publication number: 20210243175
    Abstract: A service processing method, apparatus, and storage medium of a blockchain system are provided. The service processing method includes obtaining authentication information of a service participant; determining whether data in the authentication information of the service participant is updated; generating, based on the data in the authentication information of the service participant being updated, a notification message according to the updated data; and transmitting the notification message to a service processing node subnetwork, the notification message instructing one or more service processing nodes in the service processing node subnetwork to process a service request according to updated authentication information of the service participant.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Jun Zang, Jian Jun Zhang, Luo Hai Zheng, Jun Jie Shi, Hu Jia Chen, Zi Chao Tang, Yi Ge Cai, Qing Qin, Chuan Bing Dai, Hu Lan, Jin Long Chen
  • Publication number: 20210234703
    Abstract: The disclosure provides a method for recording a data block on a blockchain, a leader accounting node, and a storage medium. The method includes: generating a target data block; determining whether the plurality of branch blockchains include a branch blockchain having at least one data block waiting to be added onto the blockchain and for which no consensus has been reached; based on a determination that first branch blockchains have no data block waiting to be added onto the blockchain and for which no consensus has been reached, selecting, from the first branch blockchains, a branch blockchain for recording the target data block; recording a digest value of a previous data block recorded on the selected first branch blockchain in a block header of the target data block; and transmitting the target data block to other accounting nodes in the group of accounting nodes for reaching a consensus.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Mao Cai LI, Hu LAN, Zong You WANG
  • Publication number: 20210203482
    Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 1, 2021
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Maocai LI, Hu LAN, Zongyou WANG, Kaiban ZHOU, Haitao TU, Jinsong ZHANG, Yifang SHI, Changqing YANG, Li KONG, Gengliang ZHU, Yong DING, Qucheng LIU, Qiuping CHEN, Peng WANG
  • Publication number: 20210203509
    Abstract: A blockchain network includes a service sub-network, a consensus sub-network, and a routing layer configured to isolate the service sub-network from the consensus sub-network. A data processing method in the blockchain network includes: receiving a data processing request transmitted by a service node in the service sub-network; performing identity verification on the service node according to the data processing request; obtaining a running load of each consensus node in the consensus sub-network when the verification succeeds; determining, from the consensus sub-network according to the running load, a target consensus node configured to process the data processing request; and forwarding the data processing request to the target consensus node, and performing corresponding data processing on the data processing request by using the target consensus node.
    Type: Application
    Filed: March 10, 2021
    Publication date: July 1, 2021
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Mao Cai LI, Geng Liang ZHU, Zong You WANG, Li KONG, Hu LAN, Kai Ban ZHOU, Chang Qing YANG, Yi Fang SHI, Qui Ping CHEN, Qu Cheng LIU, Jin Song ZHANG, Pan LIU
  • Publication number: 20210167970
    Abstract: Disclosed is a data synchronization method performed by a computer device, the method including: receiving a piece of transaction data, the piece of transaction data carrying an update operation identifier and a predefined phrase corresponding to the update operation identifier; obtaining, in a case that a target block including the piece of transaction data is stored into a blockchain of a blockchain system, the update operation identifier and the predefined phrase in the target block; and updating a predefined phrase database according to the update operation identifier and the predefined phrase in the target block.
    Type: Application
    Filed: January 11, 2021
    Publication date: June 3, 2021
    Inventors: Maocai LI, Zongyou Wang, Hu Lan
  • Publication number: 20210167972
    Abstract: This application provides a method for issuing a digital certificate performed by a digital certificate issuing center that includes a public-private key generation module and an authentication module. The method includes: receiving a public-private key request from a node in a blockchain network; generating a public key and a private key of the node by using the public-private key generation module, and transmitting the public and private keys to the node; receiving the public key of the node and registration information of the node, and authenticating the registration information by using the authentication module; and generating, in accordance with a determination that the authentication succeeds, a digital certificate of the node by using the authentication module, and transmitting the digital certificate to the node. The embodiments of this application can improve the probative value of an issued digital certificate, thereby improving the security of data exchange in a blockchain network.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Inventors: Jun ZANG, Jianjun Zhang, Luohai Zheng, Junjie Shi, Hujia Chen, Zichao Tang, Yige Cai, Qing Qin, Chuanbing Dai, Hu Lan, Jinlong Chen
  • Publication number: 20210157778
    Abstract: Embodiments of this application provide a blockchain-based information processing method, including: obtaining an original index information set, the original index information set comprising at least one piece of original index information, each piece of original index information comprising plaintext sensitive content; obtaining information in to-be-matched blocks in a blockchain system, the information comprising information content and an information index, the information content having a correspondence with the information index; matching the information content in the information by using the original index information set, to obtain a matching result; and determining a variant index information set when the matching result indicates that the matching succeeds, the variant index information set comprising at least one piece of variant index information, the variant index information comprising the information index corresponding to the information content in the information.
    Type: Application
    Filed: February 3, 2021
    Publication date: May 27, 2021
    Inventors: Maocai LI, Zongyou WANG, Hu LAN
  • Publication number: 20210144017
    Abstract: A method for replacing an identity certificate in a blockchain network includes a service subnet, a consensus subnet, and a routing layer used for isolating the service subnet from the consensus subnet. The method includes: receiving a root certificate replacement notification transmitted by a certificate authentication center; obtaining a public key corresponding to the certificate authentication center; verifying the root certificate replacement notification by using the obtained public key; forwarding the root certificate replacement notification to a consensus node in the consensus subnet after the validation succeeds, so that the consensus node records the root certificate replacement notification into a latest data block after a consensus on the root certificate replacement notification is reached; and requesting, when the data block is received, the certificate authentication center to replace an identity certificate.
    Type: Application
    Filed: January 21, 2021
    Publication date: May 13, 2021
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Mao Cai LI, Geng Liang ZHU, Hu LAN, Zong You WANG, Li KONG, Kai Ban ZHOU, Chang Qing YANG, Qiu Ping CHEN, Qu Cheng LIU, Yi Fang SHI, Jin Song ZHANG, Pan LIU
  • Publication number: 20210135848
    Abstract: This application provide a data management method for a blockchain system, a medium, and an electronic device. The system includes an accounting node sub-network and a service node sub-network. The method includes: adding, after an accounting node generates a first data block, first key information used for verifying a block header of a second data block generated after the first data block to a block header of the first data block; generating a signature corresponding to the first data block, and adding the signature corresponding to the first data block to the block header of the first data block; and releasing the block header of the first data block to the service node sub-network, to cause a service node to verify the signature included in the block header of the first data block, and obtaining the first key information after a successful verification to verify the block header of the second data block.
    Type: Application
    Filed: January 13, 2021
    Publication date: May 6, 2021
    Inventors: Maocai LI, Zongyou Wang, Li Kong, Kaiban Zhou, Hu Lan, Yifang Shi, Changqing Yang, Jinsong Zhang, Yong Ding, Gengliang Zhu, Qucheng Liu, Qiuping Chen