Security, Trust, and Privacy on Mobile Devices and Multimedia Applications

While security in general is increasingly well addressed, both mobile security and multimedia security are still areas of research undergoing major changes. Mobile security is characterized by small devices that, for instance, make it difficult to enter long passwords and that cannot perform complex cryptographic operations due to power constraints. Multimedia security has focused on watermarks and the creation of digital evidences; as we all know, there are yet no good solutions to prevent illegal copying of audio and video files. In this chapter we focus on addressing the attributes of security, trust, and privacy on mobile devices and multimedia applications.