In this paper we present two approaches to combine recent results of cryptographic research with the requirements of modern multimedia systems. The first is to evaluate modern block ciphers in a JAVA-environment. The second approach is based on recent developments regarding fast Luby-Rackoff ciphers. Paradoxically, it deals with doing `high-bandwidth encryption with low-bandwidth smartcards'. Also, we discuss implementation considerations for a specific multimedia project, the multimedia database for teleteaching at the University of Mannheim.