Secure and Fast Multimedia Digital Content Distribution System Based on a Partial Encryption and Group-Key

Security and fast multimedia distribution has become an important research topic due to ever growing opportunities on the Internet and improving network capability. Faster and more secure multimedia distribution can be achieved through Web caching and encryption. Due to specific characteristic of multimedia content such as its size, it is important to reconsider encryption technique used for multimedia content. In order to reduce user perceived latency, it is proposed to use partial encryption based on the multimedia type. Moreover, in order to guarantee that only authorized users have access to secure multimedia, group key management is introduced into the proposed system. This enables to ensure backward and forward secrecy on authorized group. Using these techniques will guarantee a more secure and faster multimedia content distribution.