Improvement of data authenticity assurance process in regional health information system

被引：2

作者：

Zhou T.-S. ^{[1
]}

Li J.-S. ^{[1
]}

Yang Y.-B. ^{[1
]}

Chen Y.-Q. ^{[2
]}

Xue W.-G. ^{[2
]}

Zhao J.-P. ^{[2
]}

机构：

[1] Healthcare Informatics Engineering Research Center, Zhejiang University

[2] Chinese PLA General Hospital

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2010年 / 44卷 / 08期

关键词：

Data authenticity; Data security; Message digest; Regional health;

D O I：

10.3785/j.issn.1008-973X.2010.08.009

中图分类号：

学科分类号：

摘要：

A rolling digest method was proposed for data authenticity assurance process in regional health information system (RHIS) to replace the current three-layer Hash list structure. In the new method, each digest is relative to the former digest, it facilitates accessing, protection, and sharing of huge quantity of medical data in RHIS. Based on relative digest structure, a more flexible method, partially rolling digest method, was designed. By analyzing check times in verification processes, rolling digest method is proved more efficient than Hash list method in locating error files. A 10000-file comparison experiment shows that the verify time drops form 6.71 s as average time in Hash list method to 0.21 s in rolling digest method. In addition, rolling digest method simplifies the second round digest process of three-layer hash list structure, making the entire system more efficient. For its relativity in digests, the rolling digest method provides an effective solution to improve the data authenticity assurance process in RHIS.

引用

页码：1484 / 1489+1507

共 13 条

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