Software-Based copy protection for temporal media during dissemination and playback

Authors:
Gisle Grimen;Christian Mönch;Roger Midtstraum
Affiliations:
Department of Computer and Information Science, Norwegian University of Science and Technology;Department of Computer and Information Science, Norwegian University of Science and Technology;Department of Computer and Information Science, Norwegian University of Science and Technology
Venue:
ICISC'05 Proceedings of the 8th international conference on Information Security and Cryptology
Year:
2005

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Abstract

We present a software-based protection mechanism to prevent unauthorized copying of media documents during their presentation on a clients host. Our solution enforces the execution and continuous replacement of security mechanisms on the clients host. Each protection mechanism is only used for a short time interval before it is replaced. The short duration of the time interval prevents a successful analysis and attack of the mechanism. In this way we solve a shortcoming of current solutions. As those employ fixed protection mechanisms they will eventually be circumvented because attackers have virtually unlimited time to analyze them.