Research On The Encryption Transmission Of High-Bandwidth Real-Time Streaming Media

With the development of the networking technology, the campus network as an important part of the Internet heading to the trend of high speed and flatten. At the same time, the campus network as a breeding hotbed of the internet becomes the latest network technology experiment platform. In recent years, the growing of high-bandwidth real-time streaming medias are related to the development of computer technology, image processing technology and network technology. First of all, the processing ability of user terminal is getting more and more stronger, multi-core CPU and high performance GPU, makes the individual terminal processing a large number of concurrent data possible; secondly, with the appearance of HD, ultra high-definition video technology, the network bandwidth is growing exponentially, so the bandwidth of backbone network facing more and more pressure; finally, in recent years, the IP multicast technology is becoming more and more mature, it has been widely applied to variety of data distribution systems. But the IP multicast technology has the problems in reliability, safety, and multicast network heterogeneity these are waiting to be solved.Therefore, using the campus network of high bandwidth streaming media as the research object, firstly we summarizes the key problems in real-time streaming media system and IP multicast technology involved, secondly we build the IP multicast real-time streaming media service network which has large heterogeneous network, thirdly, in order to explore IP multicast encryption transmission efficiency, we write code and build the IP multicast flow encryption transmission system, the details are as follows:(1) We build the streaming media system to solve production, media release, transmission and playback problems, the summary of the existing flow of media system, selecting suitable for high bandwidth real-time streaming media application coding algorithm, network transmission mode and the best play mode etc.(2) According to the campus network of large-scale IP multicast deployment problem, based on Techniques of IP multicast group, analysis of related protocol IP multicast routing protocols, the control protocol, summarizes some heterogeneity in multicast network, scheme solving the key problem of network IP multicast technology deployment Park, general configuration rules and stable operation of the given the campus network IP multicast video, and lead to safety problems existing in campus network multicast video.(3) In order to ensure the safety of IP multicast technology in the transmission process, the general performance indicators are HD multicast video encryption, and set up complete IP multicast data packet encryption to encrypt the data environment, respectively, using symmetric encryption mode and mixed encryption model finally, compared with the experimental results given no encryption algorithm comparison chart.