Network Secure Transmission Of The Establishment And Maintenance Of Research

This article is mainly focus on the security of the network transmission, that is, the establishment and the maintain of the security channel. To establish a security link need to do two thing: first, authentication; second, key agreement. The model of the network transmission is divided to unicast, broadcast and multicast. For the different model has different require, this issue is discuss about the authentication and key agreement from this respect. And we mainly focus on the distributed key management framework: IGKMP and lolus , the rekeying protocol based on key tree , and periodical rekeying strategies. And at the last of this article we put forward a secure framework based on the multicast of multimedia.