{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T12:52:32Z","timestamp":1771073552961,"version":"3.50.1"},"reference-count":22,"publisher":"World Scientific Pub Co Pte Ltd","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Image Grap."],"published-print":{"date-parts":[[2023,5]]},"abstract":"<jats:p>Recent healthcare systems are defined as highly complex and expensive. But it can be decreased with enhanced electronic health records (EHR) management, using blockchain technology. The healthcare sector in today\u2019s world needs to address two major issues, namely data ownership and data security. Therefore, blockchain technology is employed to access and distribute the EHRs. With this motivation, this paper presents novel data ownership and secure medical data transmission model using optimal multiple key-based homomorphic encryption (MHE) with Hyperledger blockchain (OMHE-HBC). The presented OMHE-HBC model enables the patients to access their own data, provide permission to hospital authorities, revoke permission from hospital authorities, and permit emergency contacts. The proposed model involves the MHE technique to securely transmit the data to the cloud and prevent unauthorized access to it. Besides, the optimal key generation process in the MHE technique takes place using a hosted cuckoo optimization (HCO) algorithm. In addition, the proposed model enables sharing of EHRs by the use of multi-channel HBC, which makes use of one blockchain to save patient visits and another one for the medical institutions in recoding links that point to EHRs stored in external systems. A complete set of experiments were carried out in order to validate the performance of the suggested model, and the results were analyzed under many aspects. A comprehensive comparison of results analysis reveals that the suggested model outperforms the other techniques.<\/jats:p>","DOI":"10.1142\/s0219467822400034","type":"journal-article","created":{"date-parts":[[2021,10,7]],"date-time":"2021-10-07T01:52:02Z","timestamp":1633571522000},"source":"Crossref","is-referenced-by-count":5,"title":["Data Ownership and Secure Medical Data Transmission using Optimal Multiple Key-Based Homomorphic Encryption with Hyperledger Blockchain"],"prefix":"10.1142","volume":"23","author":[{"given":"Naresh","family":"Sammeta","sequence":"first","affiliation":[{"name":"JNTUK, Kakinada 533003, Andhra Pradesh, India"},{"name":"Dept. of Computer Science & Engineering, R.M.K College of Engineering and Technology, Chennai 601 206, Tamilnadu, India"}]},{"given":"Latha","family":"Parthiban","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Pondicherry University Community College, Pondicherry 605008, 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