Redactable Signatures for Signed CDA Documents

Authors:
Zhen-Yu Wu;Chih-Wen Hsueh;Cheng-Yu Tsai;Feipei Lai;Hung-Chang Lee;Yufang Chung
Affiliations:
Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan;Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan and Graduate Institute of Networking and Multimedia, National Taiwan University, Taipei, Taiw ...;Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan;Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan and Grad ...;Department of Information Management, Tamkang University, Taipei, Taiwan;Department of Electrical Engineering, Tunghai University, Taipei, Taiwan
Venue:
Journal of Medical Systems
Year:
2012

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Abstract

The Clinical Document Architecture, introduced by Health Level Seven, is a XML-based standard intending to specify the encoding, structure, and semantics of clinical documents for exchange. Since the clinical document is in XML form, its authenticity and integrity could be guaranteed by the use of the XML signature published by W3C. While a clinical document wants to conceal some personal or private information, the document needs to be redacted. It makes the signed signature of the original clinical document not be verified. The redactable signature is thus proposed to enable verification for the redacted document. Only a little research does the implementation of the redactable signature, and there still not exists an appropriate scheme for the clinical document. This paper will investigate the existing web-technologies and find a compact and applicable model to implement a suitable redactable signature for the clinical document viewer.