Beijing Baidu Netcom Science and Technology Co., Ltd.

Yuxiao Song

Hui Wang

Haodong Chen

Hang Zhou

Hongbin Mao

Siyuan Pan

Yao Liu

Yang Meng

Jingqi Cao

Weidong Cai

Xiangmin Li

Embodiments of the present disclosure provide methods and apparatuses for blockchain-based multi-party computation, a device and a medium, relate to blockchain technology in the field of computer technology. An embodiment of the method can include: encrypting business data, to obtain a ciphertext of the business data; hashing the ciphertext of the business data, to obtain a hash result of the business data; sending the hash result of the business data to a blockchain node, so that the blockchain node writes the hash result of the business data into a blockchain; and sending the ciphertext of the business data to a target trusted computing module in a target server, for instructing the target trusted computing module to perform multi-party computation based on the ciphertext of the business data and the hash result of the business data in the blockchain.

Method, apparatus for blockchain-based multi-party computation, device and medium

Embodiments of the present disclosure relate to a service flow system and a service data processing method and apparatus. The system can include a management server, a distributed storage cluster and a block chain alliance network connected by a network, the block chain alliance network including a consensus node and at least one participant node. Through unified management of a management server, off-chain data is stored in a distributed storage cluster, then participants of each phase are defined for different projects, and the participants of the same phase of the same project share the same on-chain and off-chain data. Therefore, credible access of the participants to block chain data is solved, dynamic customizable phase management of the projects in a service flow is supported, the on-chain data and participants of each phase are strictly divided and managed, and associated management of on-chain and off-chain service flow data is also supported.

Service flow system and service data processing method and apparatus

Embodiments of the present disclosure relate to the field of blockchain technology, disclose a method, apparatus, and storage medium for processing an ethereum-based falsified transaction, and solve the problem of the existing technologies failing to achieve validating falsification resistance of an ethereum consensus algorithm in engineering. The method includes: sending a falsified transaction to a preset node of in ethereum network, such that the preset node broadcasts a block including the falsified transaction to all nodes in the ethereum network; and determining whether the falsified transaction successfully attacks the ethereum network based on information on a chain maintained by a node in the ethereum network. The embodiments of the present disclosure apply to the process of validating the falsification attack resistance of the ethereum network consensus algorithm.

Method, apparatus and storage medium for processing ethereum-based falsified transaction

Embodiments of the present disclosure relates to the field of block chain technology, and provides a method for creating a Hyperledger Fabric network, a controller and a storage medium. The method may include: acquiring a configuration file required to create a Hyperledger Fabric network in a Kubernetes cluster; and creating the Hyperledger Fabric network in the Kubernetes cluster according to the configuration file and a preset state machine. Embodiments of the present disclosure are applicable to the procedure of creating the Hyperledger Fabric network.

Method for creating hyperledger fabric network, controller and storage medium

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Beijing, China

Yuxiao Song