Safe And Reliable Multicast Streaming Media Technology Research

Multicast has a very wide range of potential applications, and an increasing number of multicast applications require security Mechanism. However, the current lack of security mechanisms to meet these multicast protocols, Packet expressly used in the transmission network can easily be eavesdropping, impersonation and tampering. To solve these multicast security issues, the introduction of the source of authentication, key management and other methods to improve multicast security.Streaming media applications, widened multicast applications and prospects, but the safety Multicast Streaming Media, combination of streaming media and multicast transmission systems are common vulnerability. Streaming Media tremendous volume of data, real-time requirements, the delay is extremely sensitive and sub-transmission. Deciphering needs real-time online, streaming media multicast security solution must face to the new challenges.Multicast security on the basis of the analysis of existing methods, are taken to improve security, and guarantee the safety of Multicast Streaming Media : Backup active routing strategy to reduce multicast tree reconstruction delay; MAC function using multi-bit output of the single alternative EMAS bit pseudo-random function, Multicast authentication methods to be more practical. make it applicable to the large number of dynamic and reliable multicast data transmission signature authentication, data integrity, Non-repudiation services and authenticity; WKA in key management method based on division-level dynamic tree Key to narrow the scope to reduce rekeying delays, the process of rekeying effectively reduce the number of duplicate messages.Video Conference System in achieving security exposition of the principles and methods. Video System enhance safety performance. Multicast technology for the practical use of multicast application and security have practical significance particularly applies to the safety of higher multicast applications, such as video conferencing confidentiality stock quotations, software distribution.