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To solve these problems, this paper improves the privacy of access policy, attribute revocation and data authenticity of traditional CP-ABE algorithm. A protection scheme for ample public data security in universities is proposed, and a decentralized network structure based on multiple nodes is designed to improve the efficiency of data queries. The simulation results show that the scheme performs well in the scenario where the number of system attributes is moderate and the complexity of the access policy is not high. <\/jats:p>","DOI":"10.1142\/s0218126625500756","type":"journal-article","created":{"date-parts":[[2024,8,30]],"date-time":"2024-08-30T07:21:47Z","timestamp":1725002507000},"source":"Crossref","is-referenced-by-count":1,"title":["Decentralized CP-ABE Scheme for Enhanced University Data Security Using Blockchain"],"prefix":"10.1142","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-7252-9966","authenticated-orcid":false,"given":"Zhao","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Public Policy & Management (School of Emergency Management), China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-6206-6470","authenticated-orcid":false,"given":"Han","family":"Guan","sequence":"additional","affiliation":[{"name":"School of Public Policy & Management (School of Emergency Management), China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-0364-2803","authenticated-orcid":false,"given":"Zixuan","family":"Li","sequence":"additional","affiliation":[{"name":"School of Public Policy & Management (School of Emergency Management), China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2024,10,26]]},"reference":[{"key":"S0218126625500756BIB001","first-page":"481","volume":"42","author":"Yong Y.","year":"2016","journal-title":"J. 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