A Recommending Trust Model For Interoperability Of Multi-domain Full-distributed CA In MANET

Mobile Ad Hoc Networks (MANET) is a multi-hop and instant self-organized autonomous system consisting of wireless mobile nodes with transceivers. Now MANET is mainly applied in military tactical communication, security-sensitive scenarios or other emergency situation requiring rapidly-deployable communication (e.g. succor actions of earthquake, flood, and forest fire or undersea exploration). At the same time, MANET is also used in business environment gradually, such as network of sensors, electronic commerce, mobile conference, virtual classroom and family network. MANET doesn't bring us infinite agility and convenience, but also make us face the challenge of security.A multi-domain full-distributed Certification Authorities system model was proposed founding on its trait of territorial communication. The network is compartmentalized into several domains, and every domain consists of a set of contiguous nodes. A virtual Certification Authority is composed based on door-restricted public key cryptology, serving for users in current domain. On other hand, safe communication between nodes in the different CA domains would be established through interoperability between virtual Certification Authorities. The multi-domain full-distributed PKI/CA system could ensure fault-tolerance and availability of CA; moreover, it improves security, retractility and robustness of network. Single destroyed virtual CA only influences the security of current domain instead of endangering the whole network.Because every node has equal position in network, the mutual trust among virtual Certification Authorities which are constituted by these nodes should be organized independently without outside intervention. On the other hand, these trust relationships ought to be dynamic in order to reflect the developments of network topology and the changes of its member. Moreover, according to dispersive trust rationale, the instauration and the management to mutual trust relationships also need to follow distributed operations, so that sort of credible trust relationships are maintained. Therefore, certain existing inter-operation model can't be adopted simply for the interoperability between virtual Certification Authorities in the multi-domain full-distributed Certification Authorities system of MANET.Trust is the anticipation of feasibility from appraiser to certified entity on its given...