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.