Data Processing Scheme Based on Blockchain

Abstract

In the whitepaper of Bitcoin, a chain of block was proposed by Satoshi Nakamoto. And then blockchain has been rapidly developed. Blockchain is not only limited to the field of cryptocurrency, but also has been well applied in the Internet of Things(IoT), supply chain finance, electronic evidence storage, data sharing, e-government and other fields. Both the public chain and the alliance chain have been well developed. Especially in the field of data processing, blockchain has a good application prospect. Square Kilometre Array (SKA) is a plan of the joint venture of more than ten countries around the world, which is the largest synthetic aperture radio telescope in the world. In SKA, the processing scale of data is large, and there are many data processing nodes in it.The data will be processed in the cloud computing mode.In view of the SKA, this paper proposes a data processing scheme based on blockchain for anti-counterfeiting, anti-tamper and traceability of data. And authenticity and integrity of data are assured. It mainly includes data distribution, data operation and data sharing, which correspond to data reception, data algorithm processing and result sharing of data operation in SKA. With this scheme, the integrity, reliability and authenticity of data are guaranteed. And smart contract, homomorphic hashing, secure container, aggregate signature and one-way encrypted channel are adopted to ensure the intelligence, security and high performance of the scheme.