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SREC-NETWORK SECURITY

SREC-NETWORK SECURITY - A PAPER ON VIDEO FINGERPRINTING AND...

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A PAPER ON VIDEO FINGERPRINTING AND ENCRYPTION PRINCIPLES AT AUTHORS:- M.V.B.S.S.SANKAR S. DURGA PRASAD III/IV B.TECH III/IV B.TECH INFORMATION TECHNOLOGY E-MAIL:- [email protected]
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ABSTRACT: This paper provides a tutorial and survey of digital fingerprinting and video scrambling algorithms based on partial encryption. We also propose a novel architecture for joint fingerprinting and decryption that holds promise for a better compromise between practicality and security for emerging digital rights management applications. We consider situations in which on the order of hundreds or even thousands of users may wish near-simultaneous access to the same video content. Thus, for superior scalability the network service provider must transmit the content by making use of a multicast distribution model. We focus on the problems of video fingerprinting and encryption. INTRODUCTION: Multimedia security algorithms that enable digital rights management (DRM) in resource constrained communication applications. Our focus is on the video-on- demand (VoD) business model, in which subscribers to a content-providing service request and receive video information at scheduled intervals. In contrast, video encryption has the goal of obscuring the perceptual quality of the host signal such that access to the content is denied. In comparison to traditional cryptographic algorithms, those for video may often be “lightweight” in order to accommodate computational complexity restrictions; the term “video scrambling” is often used to refer to such processes. The main objective of fingerprinting and encryption in a DRM context is to protect video content from a set of attacks applied by one or more attackers Overall, the objectives of this paper are twofold: 1) To present a state-of-the-art review and tutorial of the emerging areas of video fingerprinting and encryption highlighting design challenges for multicast environments. 2) To propose the approach of joint fingerprinting and decryption (JFD) to establish a better compromise between practicality and security for DRM applications
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SECURITY ARCHITECTURES: We consider a single transmitter which may be a VoD server that we refer to as the source or server that communicates with n>1 receivers that we call users. In all situations, the source is responsible for embedding the global group watermark that may contain copyright and ownership information, and is also responsible for encrypting the media content using secret key cryptography with a group key that is common for all users. The use of a single group key for encryption under certain conditions can enable multicast communications, but requires more sophisticated key management. At the receivers, each user must decrypt the content individually.
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