NDLI: Disclosing verifiable partial information of signed CDA documents using generalized redactable signatures

Content Provider	IEEE Xplore Digital Library
Author	Slamanig, D. Stingl, C.
Copyright Year	2009
Description	Author affiliation: Healthcare IT & Information Security Group, Department of Medical Information Technology, Carinthia University of Applied Sciences, Primoschgasse 10, 9020 Klagenfurt, Austria (Slamanig, D.; Stingl, C.)
Abstract	Digital signatures are an invaluable tool to provide a means for verifying the integrity and authenticity of digital medical documents. Since these documents may be used by several parties in medical treatment processes, the aforementioned properties are essential. However, the general principle of digital signatures is all or nothing. This means, that given a digital signature it is only possible to verify whether it is valid for the entire document or not. Nevertheless, often there is a necessity that only a part of a already signed medical document is relevant in a subsequent process, e.g. in case of second opinions. Another scenario is the anonymization of medical documents for clinical studies, where the holder of a document solely wants to disclose parts of the document, i.e. for privacy reasons. Consequently, the original signature cannot be used to verify the integrity and authenticity of the “redacted” document anymore. Hence, the receiver of this redacted document needs to fully trust the content of the document. In this paper we propose a novel concept to solve the aforementioned problem. It is based on so called redactable signatures, which were recently introduced, and allow parties to remove certain parts of a document while preserving the property of verifiability. However, when dealing with documents based on the clinical document architecture (CDA), all existing redactable signatures fail to be really practical. To overcome the problems and shortcomings of existing redactable signatures we propose a novel concept of generalized redactable signatures which is especially applicable for structured documents, e.g. XML documents. Additionally, we will show that our solution can be used to sign partial information of CDA documents, which cannot be realized efficiently with existing solutions (e.g. XML signatures), when the redacted information can be chosen arbitrarily. Finally, the proposed concept provides a solution to an unsolved problem in context of secure eHealth architectures that are based on anonymization.
Starting Page	146
Ending Page	152
File Size	361337
Page Count	7
File Format	PDF
ISBN	9781424450138
DOI	10.1109/HEALTH.2009.5406190
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-16
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Privacy Law Information security XML Medical treatment Medical services Clinical diagnosis Information technology Digital signatures Legal factors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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