{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T10:32:52Z","timestamp":1771065172633,"version":"3.50.1"},"reference-count":24,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T00:00:00Z","timestamp":1731974400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Research and Development Program of China","award":["2023YFB2704500"],"award-info":[{"award-number":["2023YFB2704500"]}]},{"name":"National Key Research and Development Program of China","award":["4222033"],"award-info":[{"award-number":["4222033"]}]},{"name":"Beijing Natural Science Foundation","award":["2023YFB2704500"],"award-info":[{"award-number":["2023YFB2704500"]}]},{"name":"Beijing Natural Science Foundation","award":["4222033"],"award-info":[{"award-number":["4222033"]}]},{"name":"Beijing Advanced Innovation Center for Future Blockchain and Privacy Computing","award":["2023YFB2704500"],"award-info":[{"award-number":["2023YFB2704500"]}]},{"name":"Beijing Advanced Innovation Center for Future Blockchain and Privacy Computing","award":["4222033"],"award-info":[{"award-number":["4222033"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>With the development of the data-sharing system in recent years, financial management systems and their privacy have sparked great interest. Existing financial data-sharing systems store metadata, which include a hash value and database index on the blockchain, and store high-capacity actual data in the center database. However, current data-sharing systems largely depend on centralized systems, which are susceptible to distributed denial-of-service (DDoS) attacks and present a centralized attack vector. Furthermore, storing data in a local center database has a high risk of information disclosure and tampering. In this paper, we propose the ChainMaker Privacy Computing (CPC) system, a new decentralized data-sharing system for secure financial data, to solve this problem. It provides a series of financial data information and a data structure rather than actual data on the blockchain to protect the privacy of data. We utilize a smart contract to establish a trusted platform for the local database to obtain encrypted data. We design a resource catalog to provide a trusted environment of data usage in the privacy computing system that is visible for members on the blockchain. Based on cipher-policy attribute-based encryption (CP-ABE), We design a CPC-CP-ABE algorithm to enable fine-grained access control through attribute based encryption. Finally, We propose an efficient scheme that allows authenticated data-sharing systems to perform Boolean searches on encrypted data information. The results of experiment show that the CPC system can finish trusted data sharing to all organizations on the blockchain.<\/jats:p>","DOI":"10.3390\/sym16111550","type":"journal-article","created":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T07:51:15Z","timestamp":1732002675000},"page":"1550","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Data-Sharing System with Attribute-Based Encryption in Blockchain and Privacy Computing"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-2000-772X","authenticated-orcid":false,"given":"Hao","family":"Wu","sequence":"first","affiliation":[{"name":"School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"given":"Yu","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7671-311X","authenticated-orcid":false,"given":"Konglin","family":"Zhu","sequence":"additional","affiliation":[{"name":"School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"given":"Lin","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1059","DOI":"10.1109\/TEM.2020.2965991","article-title":"Electronic Regulation of Data Sharing and Processing Using Smart Ledger Technologies for Supply-Chain Security","volume":"67","author":"Epiphaniou","year":"2020","journal-title":"IEEE Trans. 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