{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T15:17:58Z","timestamp":1784215078572,"version":"3.55.0"},"reference-count":52,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,11]],"date-time":"2022-01-11T00:00:00Z","timestamp":1641859200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Taif univeristy","award":["TURSP-2020\/239"],"award-info":[{"award-number":["TURSP-2020\/239"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Due to the value and importance of patient health records (PHR), security is the most critical feature of encryption over the Internet. Users that perform keyword searches to gain access to the PHR stored in the database are more susceptible to security risks. Although a blockchain-based healthcare system can guarantee security, present schemes have several flaws. Existing techniques have concentrated exclusively on data storage and have utilized blockchain as a storage database. In this research, we developed a unique deep-learning-based secure search-able blockchain as a distributed database using homomorphic encryption to enable users to securely access data via search. Our suggested study will increasingly include secure key revocation and update policies. An IoT dataset was used in this research to evaluate our suggested access control strategies and compare them to benchmark models. The proposed algorithms are implemented using smart contracts in the hyperledger tool. The suggested strategy is evaluated in comparison to existing ones. Our suggested approach significantly improves security, anonymity, and monitoring of user behavior, resulting in a more efficient blockchain-based IoT system as compared to benchmark models.<\/jats:p>","DOI":"10.3390\/s22020528","type":"journal-article","created":{"date-parts":[[2022,1,11]],"date-time":"2022-01-11T20:33:04Z","timestamp":1641933184000},"page":"528","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":108,"title":["Deep Learning Based Homomorphic Secure Search-Able Encryption for Keyword Search in Blockchain Healthcare System: A Novel Approach to Cryptography"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4853-5093","authenticated-orcid":false,"given":"Aitizaz","family":"Ali","sequence":"first","affiliation":[{"name":"Department of Software Systems and Cyber-Security, School of IT, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9848-8950","authenticated-orcid":false,"given":"Muhammad Fermi","family":"Pasha","sequence":"additional","affiliation":[{"name":"Department of Software Systems and Cyber-Security, School of IT, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0589-7924","authenticated-orcid":false,"given":"Jehad","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Computer Engineering, Ajou University, Suwon 16499, Korea"},{"name":"Department of AI Convergence Network, Ajou University, Suwon 16499, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ong Huey","family":"Fang","sequence":"additional","affiliation":[{"name":"Department of Software Systems and Cyber-Security, School of IT, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6019-7245","authenticated-orcid":false,"given":"Mehedi","family":"Masud","sequence":"additional","affiliation":[{"name":"Department of Computer Science, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anca Delia","family":"Jurcut","sequence":"additional","affiliation":[{"name":"School of Computer Science, University College Dublin, Belfield 4, D04 V1W8 Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5595-4280","authenticated-orcid":false,"given":"Mohammed A.","family":"Alzain","sequence":"additional","affiliation":[{"name":"Department of Information Technology, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ali, A., Ejaz, A., Jabbar, M., Hameed, K., Mushtaq, Z., Akhter, T., and Haider, A. (2016, January 24\u201326). 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