公开(公告)号：US12278916B2

公开(公告)日：2025-04-15

申请号：US17894367

申请日：2022-08-24

Applicant: Huawei Cloud Computing Technologies Co., Ltd.

Inventor： Yu Zhang ,  Kai Guo ,  Tengfei Xue ,  Mengmeng Zhou ,  Lei Wang ,  Yue Yu

IPC: H04L9/00 ,  H04L9/06 ,  H04L9/40

Abstract: A data provider encrypts source data to obtain a ciphertext of the source data, and uploads the ciphertext of the source data to a data storage platform for storage. Subsequently, in response to a data application request of a data consumer, the data provider encrypts a storage address of the ciphertext of the source data by using a public key of the data consumer, and uploads the encrypted storage address to a blockchain network. The data consumer obtains the ciphertext of the source data from the data storage platform. In the process, a blockchain decentralization capability is used to implement secure and trusted data exchange by using a smart contract that is public and commonly visible to a plurality of parties.

公开(公告)号：US11811910B2

公开(公告)日：2023-11-07

申请号：US17166860

申请日：2021-02-03

Applicant: HUAWEI CLOUD COMPUTING TECHNOLOGIES CO., LTD.

Inventor： Yu Zhang ,  Lei Wang ,  Lipeng Hao ,  Ziyi Zhang

IPC: H04L9/06 ,  H04L9/32 ,  H04L9/40

CPC classification number: H04L9/0637 ,  H04L9/3263 ,  H04L63/145

Abstract: This application discloses a method used to remove a target blockchain node group of a first tenant from a channel. In the method, an execution node of a second tenant receives configuration information of the target blockchain node group of the first tenant which is sent by a management node, obtains channel configuration information of the channel from a consensus organization, and generates channel adjustment information based on the channel configuration information and the configuration information of the target blockchain node group. The execution node of the second tenant sends the channel adjustment information to the consensus organization, and the consensus organization generates a block including the channel adjustment information. A blockchain node group of the second tenant obtains the block from the consensus organization, and adds the block to a blockchain stored in the second tenant.