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ISSN 1004-9037
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Edited by: Editorial Board of Journal of Data Acquisition and Processing
P.O. Box 2704, Beijing 100190, P.R. China
Sponsored by: Institute of Computing Technology, CAS & China Computer Federation
Undertaken by: Institute of Computing Technology, CAS
Published by: SCIENCE PRESS, BEIJING, CHINA
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      09 May 2023, Volume 38 Issue 3
    Article

    SECURED ELECTRONIC CLINICAL UNIFIED RECORD EXCHANGE USING BLOCKCHAIN LEDGER AND OPTIMIZED CRYPTOGRAPHY
    Walzade Arti Krushnarao and Dr. Sharanbasappa Gandage
    Journal of Data Acquisition and Processing, 2023, 38 (3): 1086-1109 . 

    Abstract

    Electronic Medical Records (EMRs) contain patients’ critical personal and medical information, and safeguarding their privacy and confidentiality is paramount in healthcare. However, centralized EMR systems lack transparency, trust, and security, exposing them to data breaches and jeopardizing patient data privacy. This paper proposes a novel and robust EMR sharing system, Secured Electronic Clinical Unified Record Exchange, using Blockchain Ledger and Optimized Cryptography (SECURE-BLOCK), utilizing cutting-edge blockchain technology, cryptographic techniques, and access controls to address these challenges. The proposed system leverages blockchain technology to create a decentralized, transparent, and secure environment for EMR sharing. Smart contracts enforce access controls and authorization rules, permitting only authorized entities to access and modify EMRs. Digital certificates issued by a Certification Authority (CA) verify the identity of entities making transactions, enhancing trust and security. In addition to blockchain, an improved hybrid cryptographic technique using the Improved RSA algorithm (RSA+) and the Improved Blowfish Cryptography (BC+) algorithmis employed to protect the confidentiality and integrity of EMRs. Encryption algorithms encrypt the EMR data before storing it on the blockchain, ensuring only authorized users with decryption keys can access it. Hash functions generate unique digital fingerprints of EMR data, stored as hash values on the blockchain, ensuring data integrity and tamper-proofing. The proposed system also incorporates an access control and authorization mechanism, allowing only authenticated and authorized users to access and modify EMRs. An authentication server authenticates and authorizes user access, adding a layer of security. Network administrators maintain blockchain nodes, ensuring system integrity and availability. Experimental results show that SECURE-BLOCK generates hashes quickly, taking only 46 milliseconds for 100 blocks. RSA+ with BC+ cryptography used in SECURE-BLOCK also outperforms other cryptography combinations, with encryption and decryption times of 3.106 seconds for 96-bit data. These findings highlight the efficiency and effectiveness of SECURE-BLOCK for secure EMR sharing.

    Keyword

    EMRs, SECURE-BLOCK, CA, RSA+, BC+.


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ISSN 1004-9037

         

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