{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T19:55:08Z","timestamp":1768506908373,"version":"3.49.0"},"reference-count":39,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T00:00:00Z","timestamp":1767916800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["Grants 62241301, 12361044, 61762001"],"award-info":[{"award-number":["Grants 62241301, 12361044, 61762001"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Basic Research Project of Science and Technology Plan of Guizhou Province","award":["ZK[2023] General 022"],"award-info":[{"award-number":["ZK[2023] General 022"]}]},{"name":"Guizhou Provincial Science and Technology Projects","award":["[2024] Qingnian 287"],"award-info":[{"award-number":["[2024] Qingnian 287"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Ciphertext-Policy Attribute-Based Encryption (CP-ABE) technology provides fine-grained access control capabilities for P2P networks. However, its long-term development has been constrained by three major challenges: the trade-off between computational efficiency and functional completeness, decentralized trust security issues, and the problems of attribute revocation and traceability. This paper proposes a decentralized CP-ABE scheme based on multiple authorities (R-T-D-ABE). By leveraging three core techniques, including threshold distributed key generation, versioned attribute revocation, and identity-key binding verification, the scheme efficiently achieves both revocation and accountability while ensuring resistance against collusion attacks and forward\/backward security. Security analysis demonstrates that the proposed scheme satisfies IND-CPA security under the Generic Group Model (GGM). Experimental results indicate that it not only guarantees efficient decentralized encryption and decryption but also realizes the dual functions of revocation and accountability, thereby providing a functionally complete and efficient access control solution for P2P networks.<\/jats:p>","DOI":"10.3390\/e28010077","type":"journal-article","created":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T12:52:17Z","timestamp":1767963137000},"page":"77","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Revocable and Traceable Decentralized ABE for P2P Networks"],"prefix":"10.3390","volume":"28","author":[{"given":"Dan","family":"Gao","sequence":"first","affiliation":[{"name":"Department of Information Engineering, Anshun Technical College, Anshun 561000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huanhuan","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Computer Science and Technology, Guizhou University, Guiyang 550025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuqu","family":"Qian","sequence":"additional","affiliation":[{"name":"School of Mathematics and Computer Science, Anshun University, Anshun 561099, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Liu, Z., Cao, Z., and Wong, D.S. 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