By Borko Furht, Darko Kirovski
Highbrow homeowners who make the most new methods of reproducing, dispensing, and advertising their creations digitally also needs to guard them from piracy. Multimedia safety guide addresses a number of concerns on the topic of the safety of electronic media, together with audio, picture, and video content material. This quantity examines modern multimedia safeguard ideas together with safety architectures, encryption, watermarking, fingerprinting, authentication, and numerous functions. Comprinsing 26 chapters, the guide starts via introducing protection basics and discussing the vulnerabilities of person safety schemes. half II specializes in multimedia encryption, detailing audio, snapshot, and video encryption recommendations. half III examines watermarking concepts, reviewing present and destiny tendencies and discussing multidimensional, fragile, and strong watermarks. half IV covers multimedia info hiding, fingerprinting, and authentication. The textual content concludes with chapters describing functions of multimedia security schemes, featuring themes reminiscent of program taxonomy, electronic rights administration, and strategies for grownup picture filtering. The instruction manual bargains complete reference fabric on complicated issues within the box. It promises worthy perception for researchers, practitioners, and engineers excited about designing and constructing structures that defend electronic multimedia content material.
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Extra resources for Multimedia Security Handbook
MPEG-7: Formally named ‘‘Multimedia Content Description Interface,’’ the MPEG-7 standard provides a set of standardized tools to describe multimedia content. The main elements of the standard are description tools (Descriptors [D] and Description Schemes [DS]), a Description Definition Language (DDL) based on the XML Schema Language, and system tools. The DDL defines the syntax of the Description Tools and allows the creation of new Description Schemes and Descriptors as well as the extension and modification of existing Description Schemes.
Generation of digital signatures is a costly process in terms of computation and communication. A high rate of join or leave requests may result in a performance degradation. One particular study attempts to minimize these problems with periodic batch rekeying . In this approach, join or leave requests are collected during a rekey interval and are rekeyed in a batch. The out-ofsync problems are alleviated by delaying the use of a new group key until the next rekey interval. Batch processing also leads to a definite 32 Protection of Multimedia Content in Distribution Networks performance advantage.
Area i performs a KEKi rekey and area j performs a KEKj rekey. The only KEK held by a group member is for the area in which it currently resides. Unlike the baseline algorithm, no DEK is generated and data transmission continues uninterrupted. In IR, when a member leaves the group, a notification is sent to its current AKD. Delayed rekeying (DR): The member sends one notification to AKDi and one notification to AKDj. Area j performs a KEKj rekey, but area i does not perform a KEKi rekey. AKDi adds the member to the Extra Key Owner List (EKOL).