A trusted medical data sharing framework for edge computing leveraging blockchain and outsourced computation
Gaoyuan Quan,
Zhongyuan Yao,
Longfei Chen,
Yonghao Fang,
Weihua Zhu,
Xueming Si,
Min Li
Affiliations
Gaoyuan Quan
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China; Corresponding author. Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China.
Zhongyuan Yao
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China
Longfei Chen
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China
Yonghao Fang
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China
Weihua Zhu
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China
Xueming Si
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China
Min Li
Frontier Information Technology Research Institute, Zhongyuan University of Technology, 450007, Zhengzhou, China; Henan International Joint Laboratory of Blockchain and Data Sharing, 450007, Zhengzhou, China; Henan Key Laboratory of Network Cryptography Technology, 450007, Zhengzhou, China
Traditional cloud-centric approaches to medical data sharing pose risks related to real-time performance, security, and stability. Medical and healthcare data encounter challenges like data silos, privacy breaches, and transmission latency. In response to these challenges, this paper introduces a blockchain-based framework for trustworthy medical data sharing in edge computing environments. Leveraging healthcare consortium edge blockchains, this framework enables fine-grained access control to medical data. Specifically, it addresses the real-time, multi-attribute authorization challenge in CP-ABE through a Distributed Attribute Authorization strategy (DAA) based on blockchain. Furthermore, it tackles the key security issues in CP-ABE through a Distributed Key Generation protocol (DKG) based on blockchain. To address computational resource constraints in CP-ABE, we enhance a Distributed Modular Exponentiation Outsourcing algorithm (DME) and elevate its verifiable probability to “1”. Theoretical analysis establishes the IND-CPA security of this framework in the Random Oracle Model. Experimental results demonstrate the effectiveness of our solution for resource-constrained end-user devices in edge computing environments.
