A Medical Data Sharing Scheme with Attribute-Based Searchable Encryption
Realizing medical data sharing can not only avoid a large waste of medical resources,but also promote medical technology innova-tion and improve the quality of medical services.In the face of explosive growth of medical data,cloud servers have become the first choice for medical institutions to store data due to their powerful performance.For security reasons,the data stored in the cloud server is usually encrypt-ed,which ensures the confidentiality of the data,but is not conducive to subsequent data retrieval and sharing.In order to solve the above problems,a medical data sharing scheme with attribute-based searchable encryption is proposed.Combining blockchain technology and attri-bute-based searchable encryption technology,the scheme realizes fine-grained access control of user search permissions in one-to-many data sharing scenarios,and solves the problem that the fine-grained search permissions corresponding to changes in user attributes need to be re-voked in time.In addition,the scheme also implements access policy hiding and multi-keyword searchable encryption,which further im-proves the security of the scheme and the efficiency of ciphertext retrieval.Through safety proof and performance analysis,the results show that the scheme is safe and efficient.
medical data sharingblockchainattribute-based searchable encryptionpolicy hidden
国家科技期刊平台
NSTL
万方数据
