Secure Real-Time Streaming Protocol (RTSP) for Hierarchical Proxy Caching

Proxies are commonly used to cache objects, especially multimedia objects, so that clients can enjoy better quality-of-service (QoS) guarantees such as smaller startup latency and lower loss rate. But the use of multimedia proxies increases the risk that data are exposed to unauthorized access by intruders. In this paper, we propose an enhancement of the Internet IETF's Real-time Streaming Protocol (RTSP) which employs a notion of "asymmetric reversible parametric sequence" (ARPS) to provide the following security properties: (i) data confidentiality during transmission, (ii) end-to-end data confidentiality, (iii) data confidentiality against proxy intruders, and (iv) data confidentiality against member collusion. We present the Secure Multimedia Library (SML) which is based on ARPS and then realize these security features on a production video streaming server: Apple's Darwin Streaming Server. Our framework guarantees the system resilience against attacks is prova...

• Type: Journal
• Year: 2008
• Where: IJNSEC
• Authors: Yeung Siu Fung, John C. S. Lui, David K. Y. Yau
• Keywords: Data Confidentiality, IJNSEC 2008, Smaller Startup Latency, Unauthorized Access