Quantin C, Bouzelat H, Dusserre L
Department of Medical Informatics, Teaching Hospital of Dijon, France.
Stud Health Technol Inform. 1997;43 Pt A:339-42.
A computerized record hash coding and linkage procedure is proposed to allow the chaining of medical information within the framework of epidemiological follow-up. Before their extraction, files are rendered anonymous using a one-way hash coding based on the SHA function, in order to respect the legislation on data privacy and security. To avoid dictionary attacks, two keys have been added to SHA coding. Once rendered anonymous, the linkage of patient information can be accomplished by the means of a statistical model, taking into account several identification variables.
本文提出了一种计算机化记录哈希编码和链接程序，以便在流行病学随访框架内实现医疗信息的链接。在提取文件之前，使用基于SHA函数的单向哈希编码对文件进行匿名化处理，以遵守数据隐私和安全方面的法律。为避免字典攻击，已在SHA编码中添加了两个密钥。一旦进行了匿名化处理，就可以通过考虑多个识别变量的统计模型来完成患者信息的链接。
