A Hybrid Blockchain-Edge Architecture for Electronic Health Record Management with Attribute-based Cryptographic Mechanisms

Hao Guo, Wanxin Li*, Mark Nejad, Chien Chung Shen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

This paper presents a hybrid blockchain-edge architecture for managing Electronic Health Records (EHRs) with attribute-based cryptographic mechanisms. The architecture introduces a novel attribute-based signature aggregation (ABSA) scheme and multi-authority attribute-based encryption (MA-ABE) integrated with Paillier homomorphic encryption (HE) to protect patients’ anonymity and safeguard their EHRs. All the EHR activities and access control events are recorded permanently as blockchain transactions. We develop the ABSA module on Hyperledger Ursa cryptography library, MA-ABE module on OpenABE toolset, and blockchain network on Hyperledger Fabric. We measure the execution time of ABSA’s signing and verification functions, MA-ABE with different access policies and homomorphic encryption schemes, and compare the results with other existing blockchain-based EHR systems. We validate the access activities and authentication events recorded in blockchain transactions and evaluate the transaction throughput and latency using Hyperledger Caliper. The results show that the performance meets real-world scenarios’ requirements while safeguarding EHR and is robust against unauthorized retrievals.

Original languageEnglish
Pages (from-to)1759-1774
Number of pages16
JournalIEEE Transactions on Network and Service Management
Volume20
Issue number2
DOIs
Publication statusPublished - Jun 2023

Keywords

  • Access control
  • Attribute-based Encryption
  • Attribute-based Signature Aggregation
  • Blockchain
  • Blockchains
  • Data privacy
  • Edge Computing
  • Electronic Health Records
  • Electronic healthcare
  • Homomorphic Encryption
  • Homomorphic encryption
  • Medical services
  • Security

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