{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T22:00:28Z","timestamp":1769292028605,"version":"3.49.0"},"reference-count":31,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T00:00:00Z","timestamp":1768089600000},"content-version":"vor","delay-in-days":10,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Concurrency and Computation"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>The growing demand for data sharing in domains such as health care highlights limitations in existing solutions, including low search efficiency, coarse\u2010grained access control, and heavy decryption overhead on users. To address these challenges, this paper proposes a hierarchical searchable attribute\u2010based encryption scheme with outsourced decryption for blockchain\u2010based data sharing (OD\u2010H\u2010SABE). OD\u2010H\u2010SABE introduces a hierarchical attribute structure alongside an outsourced decryption mechanism that offloads computationally intensive bilinear operations to the cloud server. Consequently, users only need to perform a single lightweight operation to complete decryption, significantly alleviating the computational burden. Furthermore, the scheme integrates searchable encryption with multi\u2010keyword aggregate hashing, enabling efficient search with constant complexity regardless of the number of keywords. Leveraging the transparency and immutability of blockchain, smart contracts verify the integrity of results returned from the cloud server, ensuring data security and trustworthiness throughout the sharing process. Theoretical and experimental analyses demonstrate that OD\u2010H\u2010SABE achieves notable advantages over traditional schemes in terms of security, search efficiency, and computational overhead. For example, compared to MKS\u2010VABE and BEM\u2010ABSE, OD\u2010H\u2010SABE reduces encryption and user\u2010side decryption overhead by approximately 20% and 42%, respectively. This makes it a practical and lightweight solution for constructing secure and efficient blockchain\u2010based data\u2010sharing platforms.<\/jats:p>","DOI":"10.1002\/cpe.70510","type":"journal-article","created":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T05:47:42Z","timestamp":1768196862000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["OD\u2010H\u2010SABE: A Hierarchical Searchable Attribute\u2010Based Encryption Scheme With Outsourced Decryption for Blockchain\u2010Based Data Sharing"],"prefix":"10.1002","volume":"38","author":[{"given":"Gaimei","family":"Gao","sequence":"first","affiliation":[{"name":"College of Computer Science and Technology Taiyuan University of Science and Technology  Tai Yuan 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