Security and Integrity in Digital Media

Ernst L. Leiss (1)

e-mails: coscel@cs.uh.edu

(1) Department of Computer Science - University of Houston Houston Texas Estados Unidos

Abstract

Digital media are becoming increasingly more common. With this ubiquity come requirements for security (who may gain access the media?) and integrity (is the information unadulterated/original?). Cryptography-based approaches are the traditional means of achieving these objectives. However, they have major problems within the context of the distribution of digital media such a music and video, most notably processing requirements, sensitivity to errors, or increases in the amount of data to be stored or transmitted. One way of overcoming these problems is provided by watermarks.

We start with an introduction to the main objectives, including some observations on data security, to the extent needed for the following. Then we discuss important aspects of digital media, in particular data compression. We given a brief overview of various cryptographic approaches and outline their problems within the context of storing and transmitting digital media. Then we sketch watermarks and show how they can be used to achieve, under certain fairly reasonable assumptions, the stated objectives.

Keywords:Security, Integrity, Watermarks, Intellectual Property

Biografía/Biography

Ernst L. Leiss received graduate degrees in computer science and in mathematics from the University of Waterloo and the Technical University of Vienna. He joined the Department of Computer Science at the University of Houston in 1979. He has lectured in 23 countries and has supervised 13 doctoral dissertations and approximately 100 M.S. theses. Dr. Leiss is author of about 140 peer-reviewed papers; he wrote Principles of Data Security (1982, Plenum), Software Under Siege: Viruses and Worms (1990, Elsevier), Parallel and Vector Computing: A Practical Introduction (McGraw-Hill, 1995), and Language Equations (Springer, 1999). He has contributed articles on data-security and on computer viruses to the Encyclopedia of Physical Science and Technology (1987 and 1990, Academic Press). His research interests range from data security to vector/parallel computing, geophysical data processing, databases, and theory of formal languages.

BibTex

@INPROCEEDINGS{leiss04:505,
                  AUTHOR       = {Ernst L. Leiss},
                  TITLE        = {Security and Integrity in Digital Media},
                  BOOKTITLE    = {30ma Conferencia Latinoamericana de Informática (CLEI2004)},
                  YEAR         = {2004},
                  editor       = {Mauricio Solar and David Fernández-Baca and Ernesto Cuadros-Vargas},
                  pages        = {19--19},
                  address      = {},
                  month        = Sep,
                  organization = {Sociedad Peruana de Computación},
                  note         = {ISBN 9972-9876-2-0},
}

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