Authenticity techniques for PACS images and records

Stephen T. C. Wong; Marco Abundo; H. K. Huang

doi:10.1117/12.208827

12 May 1995 Authenticity techniques for PACS images and records

Stephen T. C. Wong, Marco Abundo, H. K. Huang

Proceedings Volume 2435, Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues; (1995) https://doi.org/10.1117/12.208827
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

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.

Citation Download Citation

Stephen T. C. Wong, Marco Abundo, and H. K. Huang "Authenticity techniques for PACS images and records", Proc. SPIE 2435, Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues, (12 May 1995); https://doi.org/10.1117/12.208827

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