Researches On Mechanism Of Storage Of Trust Relationship And Discovery Of Trust

The rapid evolvement of information technology and information industry not onlyboosts the development of society and economy, but also results in great security risks.Therefore, information security is receiving much concern now. The comprehensive measuresbased on hardware structure and bottom software can enhance information security bybuilding trust among computing nodes to establish an orderly distributed computingenvironment.Trust management, one of the key technology in trusted computing, is of greatsignificance to the settlement of the trust problems in distributed systems. The existing trustmanagement model cannot adapt to the variability, the dynamic changes and uncertainty ofnetwork security due to its inefficiency in verifying the security strategies.To solve the problems in trust management model, layered architecture is constructedwith the help of Manager-Agent、Monitor-Agent、Entity-Agent, based on trust area conceptionand Agent technology. This structure can reduce the management expenses and increase themanagement efficiency by conducting trust measurement of entity nodes，managing the trustrelationship between management nodes and allowing the autonomous collaboration of nodes.The storage mechanism of trust relationship which is set up on the basis of MMA modelemploys sequential binary tree to store the trust degree of entity nodes and adjusts theproperty values of nodes as well as the form of sequential binary tree so as to achieve thedynamic management of trust relationship.Trust discovery is an important aspect of trust management. The mechanism of trustdiscovery based on the theory of semirings is established to tackle the problems in trustdiscovery mechanism. Thanks to the introduction of the semirings theory into trust area, itsets up trusted semirings, which enable it to identify the trust between two strange nodes bysearching for the shortest route in trusted graph and update trust relationship and its storage.The research in the paper is of great theoretical and practical value in the storage of trustrelationship and the mechanism of trust discovery.