计算机工程与应用2025，Vol.61Issue(4)：289-298,10.DOI:10.3778/j.issn.1002-8331.2310-0422
基于区块链的可搜索加密电子病历共享方案
Searchable Encrypted Electronic Medical Record Sharing Scheme Based on Blockchain
摘要
Abstract
A searchable encrypted electronic medical record sharing scheme based on blockchain is proposed to address the issues of difficulty in sharing,low efficiency,and privacy leakage.The approach employs a combination of on-chain and off-chain modes for data storage,ensuring secure sharing of electronic medical records.The cloud server stores the encrypted medical records,while the blockchain stores the ciphertext hash values,medical record identifiers,and keyword indexes.A dynamic inverted index structure is designed,which uses key-value to store index,and uses searchable encryp-tion technology to complete ciphertext search in the inverted index.Moreover,the blockchain nodes establish a search index while retrieving the ciphertext keywords,thus improving the search efficiency of the blockchain nodes.Experimental analysis demonstrates that the proposed scheme is more efficient than other comparable schemes,showcasing a reduction in average search time by 19.8%and in trapdoor generation time by 12.14%.In summary,this scheme can perform faster searching and sharing of electronic medical records while ensuring data security.关键词
电子病历共享/可搜索加密/区块链/倒排索引/云服务器Key words
electronic medical record sharing/searchable encryption/blockchain/inverted index/cloud server分类
信息技术与安全科学引用本文复制引用
高改梅,王娜,刘春霞,党伟超,史旭..基于区块链的可搜索加密电子病历共享方案[J].计算机工程与应用,2025,61(4):289-298,10.基金项目
山西省应用基础研究(自然科学面上)项目(202203021221153) （自然科学面上）
太原科技大学研究生教学改革研究课题(JG2022010). （JG2022010）
