The Synchronized Multimedia Integration Language (SMIL) is a W3C specification for authoring multimedia documents. Although SMIL has XML like syntactic constructs, unlike XML, SMIL compositions have an intended interpretation stemming from intuitive notions of playing out many media streams relative to each other. Thus, more than one SMIL syntactic expression can represent a multimedia composition with the same intended semantics. Therefore, in order to specify representational syntax independent security policies (policies that are primarily based on the structure of the W3C recommended syntax), we propose a normal form for SMIL objects. We address known security paradigms such as Discretionary Access Control, Mandatory Access Control (also called Multilevel Secure (MLS)), and Role-Based Access Control. Further, we investigate how SMIL formatted multimedia streams can be used to provide selective distribution of surveillance data.

Publications:

• N. Kodali, C. Farkas, D. Wijesekera, “An Authorization Model for Multimedia Digital Libraries,” Journal of Digital Libraries –, 4(3):139-155,2004. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, “SECRETS: A Secure Real-Time Multimedia Surveillance System,” Proc. of the 2nd Symposium on Intelligence and Security Informatics, 2004. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, “Multimedia Access Control using RDF-Metadata,” Proc. Workshop on Metadata for Security, in connection to ODBASE,718-731, 2003. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, “Enforcing Integrity in Multimedia Surveillance,” In Proc. IFIP 6th WG 11.5, Working Conference on Data Integrity and Control in Information Systems, 2003. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, “Specifying Multimedia Access Control using RDF,” Journal of Computer Systems, Science, and Engineering,(19)3, 2004. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, “Enforcing Semantic Aware Security in Multimedia Surveillance,” Journal on Data Semantics,2: 199-221, 2005. (PDF File)
• N. Kodali, C. Farkas, D. Wijesekera, "Creating non-decomposable Multimedia Stream bundles in Multimedia Surveillance," Proc. of Workshop on Secure Web Services, in association with the 10^th ACM CCS Conference, 2004. (PDF File)