Computer Science ›› 2018, Vol. 45 ›› Issue (2): 15-19.doi: 10.11896/j.issn.1002-137X.2018.02.003

Special Issue: Block Chain Technology

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Blockchain-based Big Data Right Confirmation Scheme

WANG Hai-long, TIAN You-liang and YIN Xin   

  • Online:2018-02-15 Published:2018-11-13

Abstract: Data right confirmation has always been one of the most challenging problems in big data trading.Traditional means of right confirmation adopt the model of submitting the ownership evidence and expert reviewing,but they lack technological credibility and there are some uncontrollable factors such as potential tampering.In order to solve these problems,a strongly operational confirmation scheme is urgently needed.This paper put forward a new big data right confirmation scheme based on the technologies of blockchain and digital watermarking.Firstly,the auditing center and watermarking center are brought in to separate the duties of the integrity auditing of big data and watermarking generation.Secondly,using provable data possession technique and sampling technique,the lightweight audit of the integrity of big data is realized.Thirdly,the special security properties of digital watermarking technology are used to confirm the origin of big data.Finally,in the light of the integrity and persistence of evidence involved in the right confirmation,the native features of blockchain,such as the shared ledger,are used to implement strong consistency of the right confirmation result and relevant evidence.Correctness and security analysis results show that the proposed scheme can provide a new technical solution for the definition of ownership of big data.

Key words: Data right confirmation,Blockchain,Digital watermarking technology,Cryptography

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