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A robust algorithm for authenticated health data access via blockchain and cloud computing.

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This study introduces a secure blockchain and cloud system for electronic health records (EHRs). It enhances data security, access control, and efficiency in healthcare data sharing.

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Area of Science:

  • Health Informatics
  • Cybersecurity
  • Distributed Systems

Background:

  • Cloud services for electronic medical records (EHRs) present security and privacy risks due to intermediaries.
  • Existing systems struggle with scalability, computational overhead, interoperability, and unauthorized data access.
  • Need for robust solutions to secure sensitive patient data in cloud-based healthcare systems.

Purpose of the Study:

  • To develop a secure and efficient blockchain-based method for managing electronic health records (EHRs).
  • To implement fine-grained access control using Ciphertext-Policy Attribute-Based Encryption (CP-ABE).
  • To integrate blockchain, smart contracts, and a cloud-based Service Management System (SMS) for enhanced EHR security and accessibility.

Main Methods:

  • Proposed a novel algorithm combining blockchain, smart contracts, and a cloud-based SMS.
  • Utilized CP-ABE for granular access control to EHRs.
  • Implemented smart contracts for automated key management, encryption, and decryption.
  • Incorporated a dual authentication system for patient key verification before data access.

Main Results:

  • The proposed algorithm significantly enhances the security and efficiency of health data exchange.
  • Blockchain provides secure data auditing and transaction authentication.
  • Cloud infrastructure ensures scalability and accessibility of EHRs.
  • Smart contracts streamline access control and key management processes.

Conclusions:

  • The integration of blockchain and cloud technologies offers a robust solution for secure EHR management.
  • The proposed system addresses limitations of traditional cloud hosting and improves data integrity and patient privacy.
  • This approach represents a significant advancement in securing digital health records in modern healthcare settings.