Research And Design Of Secure Comunication Of NVD On Demand System

With the prospering market of high-defined TV, Blue-Ray Disc wants its share for a long time. If China choosed Blue-Ray to be the standard, a lot of patent fees needs to be payed for each palyer producted by Chinese factory. In this background, NVD, who is totally owned by china, is given birth to in 2006.NVD on Demand system is a new model of playing NVD discs, including four parts: NVD disc, NVD player, management server and certificate server. Its main idea is that users get encrypted high-defined discs from movie providers for free. They request to be granted the key for the disc each time they play the disc.One problem is, how to assure security of NVD on Demand system communiction.NVD on Demand system is facing lots of security defects and threats.NVD on Demand system communication should reach security golas including password security, autnentication etc. As a embedded set, NVD player has limited cpu power and its contents of communication is sually short. Some security mechanisms needed is pointed out.Identity-Based NVD on Demand Seurityy Protocol (IBNODSP) is presented as a solution for communication security of NVD on Demand. It avoids the defects of traditional mechanism and has their goods. IBNODSP presents detailed schemes for identity authentication and private key districution, which are considered to be the two main problems in IBC.The following security services are provided by IBNODSP: authentication between two sides, secure communication, repudiability, resistence against replay atacks,etc.