Title :
Multi-layer key management for secure multimedia multicast communications
Author :
Sun, Yan ; Liu, K. J Ray
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
An important application of multicasting is group-oriented multimedia communication, such as video-on-demand and video conferencing. Before these services can be successfully deployed, security infrastructures must be developed to ensure access control to multicast content. In this paper, we present a multi-group key management scheme tailored to multimedia multicast services that distribute data in multi-layer or multi-object format. Compared with the existing tree-based key management schemes that are used for generic data multicasting services, the proposed scheme can reduce the communication overhead by a factor of (M + 1)/2 and M is the number of layers. For example, when the multimedia data is encoded into three layers according to different quality requirements, the proposed scheme reduces the communication overhead associated with key updating by 50%.
Keywords :
cryptography; multicast communication; multimedia communication; telecommunication network management; telecommunication security; telecommunication services; access control; multicast content; multilayer key management; multimedia multicast communications; multiobject format; tree-based key management schemes; Access control; Application software; Cryptography; Educational institutions; HDTV; Multicast communication; Multimedia communication; Streaming media; Sun; TV receivers;
Conference_Titel :
Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7965-9
DOI :
10.1109/ICME.2003.1221589