Privacy-preserving credit evaluation system based on blockchain

作者：

Highlights：

• A novel privacy-preserving credit evaluation system based on blockchain is proposed.

• Concerns on the disclosure of commercially sensitive data are solved.

• A linear transformation algorithm is used to encrypt the original data.

• The data access control policy based on CP-ABE is used in access control module.

• The PHE and SMPC algorithm achieve the purpose of data availability and invisibility.

摘要

•A novel privacy-preserving credit evaluation system based on blockchain is proposed.•Concerns on the disclosure of commercially sensitive data are solved.•A linear transformation algorithm is used to encrypt the original data.•The data access control policy based on CP-ABE is used in access control module.•The PHE and SMPC algorithm achieve the purpose of data availability and invisibility.

论文关键词：Credit evaluation,Privacy preservation,Blockchain,Secure multiparty computation

论文评审过程：Received 20 February 2021, Revised 17 August 2021, Accepted 26 September 2021, Available online 6 October 2021, Version of Record 13 October 2021.

论文官网地址：https://doi.org/10.1016/j.eswa.2021.115989