Beijing Baidu Netcom Science Technology Co., Ltd

Beijing Baidu Netcom Science and Technology Co., Ltd.

Jingqi Cao

Hui Wang

Haodong Chen

Lei Zhang

Yuxiao Song

Yang Meng

Xiaohe Liu

Xiangmin Li

Silei Cheng

Provided are a data storage method, a device, and a storage medium. The implementation scheme is as follows: target data to be stored is divided into data fragment original texts, and storage nodes are allocated for the data fragment original texts; in a trusted execution environment, the data fragment original texts are encrypted according to node information of the storage nodes to obtain data fragment cipher texts associated with the storage nodes; and the data fragment cipher texts are stored to the storage nodes.

Data storage method, device, and storage medium

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 provide a privacy transaction processing method, an electronic device and a storage medium, and relates to a field of blockchain technologies. The method includes: obtaining a business transaction request to be executed; if the business transaction request is a privacy business transaction request, obtaining a corresponding privacy key, in which the privacy key is an organization privacy key of a privacy organization to which the privacy business transaction request belongs; decrypting and executing the privacy business transaction request according to the privacy key to generate privacy business transaction data, in which the privacy business transaction data comprises at least associated information of privacy content data and the privacy business transaction request; and storing the privacy business transaction data in a blockchain, and storing the privacy content data locally.

Privacy transaction processing method, electronic device and storage medium

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Beijing, China

Jingqi Cao