Network Mechanism Of The Credibility Of The Amount Of Research And Achieve

With the network technology and application development rapidly, the security and trustworthniess of network information became increasingly important.Meanwhile,security of network were more and more seriously, the security and trust of network information is facing great challegence.Almostly all of the security and trustworthniess isssues were caused by the unsecurity and untrustworthniess of the terminal.Therefore the security and trustworthniess of the terminal were the key of the hall network. To establish a measurement mechanism and then to authenticate and measure the terminal before the terminal connect to the network, and this could reduce network attacks and strengthen credibility and safety.In existing trused network connect methods, whether Cisco's Network Access Control, Microsoft's Network Access Protection, Trust Computing Group's Trust Network Connection, or Being developed by Trusted Network Connect standard in our country, Ultimately the key of the security control is how to measure the credibility of the terminal. In order to solve the problem that traditional authentication system considers the user's id rather than its true identity, a new authentication model based on certianty factor was proposed. By introducing authentication certainty factor and trusted access condition of system to this model, the thesis gives the essential frame and exact description. Using the method of uncertainty reasoning in A.I, it also gives the formalization of authentication rules and the formula of certainty measurement. To be more adaptive, improved models were presented. Model with weighted factors can solve the problem that different premise conditions of authentication rule have different importance. Combining the TNC trusted network connections with the operating system security authentication trustworthniess,a TMNT was proposed.A trusted network authenticaton mode was designed,it was ensured the safety of the terminal and meanwhile,it also ensured the safety of the network.