Security

Abstract

This chapter deals with the security aspect in multimedia systems. We will begin with a discussion of the term security, as opposed to the term failure safety. As mentioned in other chapters, no arbitrary combination of media deserves the term multimedia. To particularly emphasize requirements in multimedia systems, our descriptions and discussions of security problems and solutions concentrate mainly on multimedia components. We will not discuss pure text components in detail, because they do not have any particular requirements, and are normally subject to well-known cryptographic methods frequently discussed in the literature. After a definition of the terms, we will present general security requirements in multimedia systems, followed by an introduction and discussion of various solutions for image, video, audio, and 3D data. To better explain the security approaches introduced here, we will close this chapter with several application examples to illustrate such security problems and practical security system solutions.