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Proceedings Paper

Authenticity techniques for PACS images and records
Author(s): Stephen T. C. Wong; Marco Abundo; H. K. Huang
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Paper Abstract

Along with the digital radiology environment supported by picture archiving and communication systems (PACS) comes a new problem: How to establish trust in multimedia medical data that exist only in the easily altered memory of a computer. Trust is characterized in terms of integrity and privacy of digital data. Two major self-enforcing techniques can be used to assure the authenticity of electronic images and text -- key-based cryptography and digital time stamping. Key-based cryptography associates the content of an image with the originator using one or two distinct keys and prevents alteration of the document by anyone other than the originator. A digital time stamping algorithm generates a characteristic `digital fingerprint' for the original document using a mathematical hash function, and checks that it has not been modified. This paper discusses these cryptographic algorithms and their appropriateness for a PACS environment. It also presents experimental results of cryptographic algorithms on several imaging modalities.

Paper Details

Date Published: 12 May 1995
PDF: 12 pages
Proc. SPIE 2435, Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues, (12 May 1995); doi: 10.1117/12.208827
Show Author Affiliations
Stephen T. C. Wong, Univ. of California/San Francisco (United States)
Marco Abundo, Univ. of California/San Francisco (United States)
H. K. Huang, Univ. of California/San Francisco (United States)


Published in SPIE Proceedings Vol. 2435:
Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues
R. Gilbert Jost; Samuel J. Dwyer, Editor(s)

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