The Study On Cross-domain Authentication And Routing Scheme Based On Lattice In Wireless Network

In recent years, with the development of 3G and Internet technology, the terminalcan access the Internet at any time, any place, through any operator, which hasproduced a cross-domain authentication problem. However, under cross-domainaccess to the wireless network, how to achieve a trusted connection by the wirelessterminal? When the mobile user access network from the regional, how the homedomain and the access domain to collaborate to achieve user authentication? Inaddition the existing way to achieve cross-domain authentication in wireless networkenvironment, how to solve the problem of single point collapse? These issues havebecome the key factors which affect the mobile Internet safety and successincreasingly. The paper study to realize an open, secure and efficient authenticationaccess in wireless environment.For the problem that the uneven distribution of access points in wireless networkand authentication certification path uncertainty can caused inefficient and evenauthentication failure, Thesis study search algorithm of certification path. Analysis thecharacteristics in structuring authentication pathway by the Dijkstra algorithm, thepredator-prey search algorithm and Floyd algorithm in tectonic. In the above algorithms,Dijkstra algorithm can find the shortest path and subprime path, and have a morecomplete theory. It can preserved the results, that greatly convenient the laterestablishment of authentication path. But Dijkstra algorithm exist repeat operation, lowefficiency, so the Dijkstra algorithm is improved, the weights pre-ordering method isapplied to improve the computing efficiency of Dijkstra algorithm to meet therequirements of real-time.Based on the improved Dijkstra algorithm, combining with the lattice cross-domainauthentication model, the paper proposes a dual-traction authentication mechanism andauthentication path selection scheme. Theoretical analysis shows that dual-tractioncertification mechanism greatly increases system security, also avoids the single pointcollapse. According to calculating the path weight by Dijkstra algorithm to find theshortest path in the weighted graph, the scheme can improve the certification efficiency.Finally, the paper uses the OPNET simulation tools established cross-domainauthentication model in WLAN network, through the configuration of nodes in theprocess layer, the node layer and the network layer on the scene to establish a modelto realize authentication function. The adding authentication framework includes the authentication eap module and the certification eap module. The authenticationfunction selected the network latency and delay as the index to examine the impact ofthe remote authentication center stem from cross-domain authentication.Experiment shows that the burden and delay increased after added authenticationmodule in authentication server. While the server load increased about double thanformer at the initial stage, the load reduced to half after authentication, and becomingmore balanced. Meanwhile network latency slightly increased as adding 0.5ms.