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Proceedings Paper

VQ-based digital signature scheme for multimedia content authentication
Author(s): Qibin Sun; Di Zhong; Shih-Fu Chang; Jiankang Wu; A. Desai Narasimhalu
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Paper Abstract

The need to authenticate multimedia content (audio, image and video) brings new challenges to the traditional digital signature schema. Unavoidable transmission distortion of multimedia data, such as noises introduced in printing a certificate, demands new authentication techniques that are resistant to reasonable modifications. In this paper, a novel approach to multimedia authentication based on the vector quantization (VQ) technique is presented. Its security is guaranteed by adopting a typical digital signature scheme and a hierarchical authentication procedure. The flexibility of this approach is achieved by the scalability of VQ. In addition, a feature-based registration procedure is used to pre-filter and restore the received media with reference to the original one. Using this method, a continuous measure of the authenticity can be computed based on the proposed registration and authentication procedure. This measure is helpful for setting a proper threshold for some specific authentication applications. Our experimental results with audio, image, and video have shown that the scheme is robust and practical.

Paper Details

Date Published: 9 May 2000
PDF: 13 pages
Proc. SPIE 3971, Security and Watermarking of Multimedia Contents II, (9 May 2000); doi: 10.1117/12.384994
Show Author Affiliations
Qibin Sun, Kent Ridge Digital Labs. (United States)
Di Zhong, Columbia Univ. (United States)
Shih-Fu Chang, Columbia Univ. (United States)
Jiankang Wu, Kent Ridge Digital Labs. (Singapore)
A. Desai Narasimhalu, Kent Ridge Digital Labs. (Singapore)

Published in SPIE Proceedings Vol. 3971:
Security and Watermarking of Multimedia Contents II
Ping Wah Wong; Edward J. Delp, Editor(s)

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