| 基于布隆过滤器和B+树构建倒排索引的电子病历密文搜索 |
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| 引用本文： | 王莱,周腾达,王正飞,洪佳明. 基于布隆过滤器和B+树构建倒排索引的电子病历密文搜索[J]. 计算机应用与软件, 2021, 38(4): 276-280,333. DOI: 10.3969/j.issn.1000-386x.2021.04.045 |
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| 作者姓名： | 王莱 周腾达 王正飞 洪佳明 |
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| 作者单位： | 广州中医药大学医学信息工程学院 广东 广州510006 |
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| 基金项目： | 广州中医药大学人文社会科学"远志"项目;广东省自然科学基金项目 |
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| 摘 要： | 电子病历包含病人的隐私信息,如何在保密情况下进行电子病历内容搜索是医院电子病历数据有效利用的难点.针对电子病历密文搜索,提出一种基于布隆过滤器(BF)和B+树的快速搜索方法.该技术对电子病历建立BF,按照倒排索引方式组织起来并建立B+树,能够支持在不泄露用户搜索关键词的前提下,对电子病历密文直接进行查询,安全级别达到I...
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| 关 键 词： | 电子病历 布隆过滤器 B+树 倒排索引 密文查询 |
SEARCH ON ENCRYPTED ELECTRONIC MEDICAL RECORDS USING INVERTED INDEX BASED ON BLOOM FILTER AND B+TREE |
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| Wang Lai,Zhou Tengda,Wang Zhengfei,Hong Jiaming. SEARCH ON ENCRYPTED ELECTRONIC MEDICAL RECORDS USING INVERTED INDEX BASED ON BLOOM FILTER AND B+TREE[J]. Computer Applications and Software, 2021, 38(4): 276-280,333. DOI: 10.3969/j.issn.1000-386x.2021.04.045 |
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| Authors: | Wang Lai Zhou Tengda Wang Zhengfei Hong Jiaming |
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| Affiliation: | (School of Medical Information Engineering,Guangzhou University of Chinese Medicine,Guangzhou 510006,Guangdong,China) |
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| Abstract: | The electronic medical record contains the patients privacy information.It is difficult to search the contents of electronic medical records in a confidential situation of the effective utilization of the hospital s electronic medical record data.Aiming at ciphertext search of electronic medical records,a fast search method based on bloom filter(BF)and B+tree is proposed.The BF of electronic medical record was established,and B+tree was established according to inverted index mode.It could support direct query of electronic medical record ciphertext without disclosing users search keywords,and the security level reached IND-CKA level.The experimental results show that due to the use of BF and B+tree structure,the spatial filtering characteristics are high,the filtering efficiency can reach 99%without decryption,and the query efficiency is high.It supports Boolean query,which effectively promotes the application of encrypted electronic medical record data. |
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| Keywords: | Electronic medical record Bloom filter(BF) B+tree Inverted Index Ciphertext query |
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