Distributed storage scheme for encryption speech data based on blockchain and IPFS

【Author】 Zhang, Qiuyu; Zhao, Zhenyu

【Source】JOURNAL OF SUPERCOMPUTING

【影响因子】2.557

【Abstract】Traditional centralized cloud storage has difficulties in realizing the secure storage and sharing of speech and other multimedia data, as well as realizing fine-grained access control and privacy protection for speech data. To address this problem, we propose a distributed storage scheme for encryption speech data based on blockchain and inter planetary file system (IPFS). Our scheme is based on the characteristics of blockchain anti-tampering, decentralization and traceability. It is designed to ensure the security and controllability of private sensitive speech data of data users without the use of centralized cloud storage architecture. First, the ciphertext policy hierarchical attribute-based encryption (CP-HABE) scheme is used to encrypt the speech data. The encrypted speech data is then stored in the IPFS to achieve distributed storage. Second, a distributed and trusted access control policy is implemented by deploying an access control protocol Ethereum smart contract related to speech attributes. Finally, the proposed scheme is deployed and tested in the Linux environment, and the smart contract is deployed on the Ethereum test chain. Through experimental comparison with different storage schemes, analysis of the operational properties of our scheme and the evaluation of the quality index of the encryption scheme, the proposed scheme is shown to reliable, secure and scalable.

【Keywords】Distributed storage; Blockchain; Interplanetary file system; Smart contract; Speech data; Ciphertext policy hierarchical attribute-based encryption

【发表时间】

【收录时间】2022-07-25

【文献类型】实证性文章

【主题类别】

区块链技术-核心技术-分布式存储