Research on Traceability Methods for Patient Privacy Information Leakage in Medical Data Sharing
[Purpose/significance]Electronic medical records can be shared among different hospitals using blockchain technolo-gy,but patients'private information may be leaked.The paper attempts to explore the method for investigating the leakage points of pa-tients'private information.[Method/process]The paper constructs a medical blockchain model using blockchain technology.On this basis,access flags are placed in shared electronic medical records and access behaviors are permanently saved in the blockchain;in case of privacy information leakage,the leakage points are located with the help of the above access traces.[Result/conclusion]When an access flag can be detected in the document that leaks privacy information,a leak point can be accurately located;otherwise,several suspected leakage points can be located by combining access behavior records and the identification result of the privacy information source.
medical dataelectronic medical recordprivacy informationblockchainprivacy leakageinformation traceability
NETL
NSTL
万方数据
