A secure healthcare data sharing scheme based on two-dimensional chaotic mapping and blockchain

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Abstract
Enhancing data privacy security in medical data sharing is crucial for the informatization development in the healthcare sector. This paper proposes a healthcare data sharing scheme based on two-dimensional chaotic mapping and blockchain (2DCM-DS). Specifically, a new two-dimensional chaotic mapping is proposed, which demonstrates superior chaotic performance. Then, by incorporating biometric audio information as an identity credential and integrating it with the proposed two-dimensional chaotic mapping, we design a data encryption method that establishes a strongly coupled and bi-directionally verifiable data ownership relationship in healthcare data sharing. Finally, we employ blockchain as the underlying network and design corresponding smart contracts to support 2DCM-DS. This approach addresses potential issues of unauthorized access, malicious tampering, and single points of failure in centralized data sharing. Experimental results demonstrate that 2DCM-DS effectively protects data security under the specified attack models. The results validate the security and efficiency of the 2DCM-DS, proving its application potential in healthcare insurance data sharing scenarios.
Funding Information
  • Key-Area Research and Development Program of Hubei Province (2022BAA040, 2022BAA040, 2022BAA040, 2022BAA040, 2022BAA040, 2022BAA040)
  • Key-Area Research and Development Program of Guangdong Province (2020B1111420002, 2020B1111420002, 2020B1111420002, 2020B1111420002, 2020B1111420002, 2020B1111420002)
  • Science and Technology Project of Department of Transport of Hubei Province (2022-11-4-3, 2022-11-4-3, 2022-11-4-3, 2022-11-4-3, 2022-11-4-3, 2022-11-4-3)
  • Innovation Fund of Hubei University of Technology (BSQD2019027, BSQD2019027, BSQD2019027, BSQD2019027, BSQD2019027, BSQD2019027)

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