The Research And Execution Of Secret Sharing Scheme Of Ad Hoc Networks

Mobile ad hoc network (MANET) is a collection of wireless mobile nodes f without the aid of any established infrastructure. All of its networking capabilities, including routing, management, are moving through the mobile node to complete the mutual cooperation. Relationship of trust since the establishment of the mobile communication network security group on the premise. Traditional networks can use the PKI digital certificates to establish relations of trust between the nodes, digital certificates needs a trusted parties (CA) for the identity of the user for identification, and users rely entirely on the credibility of the CA. Because of the own characteristics of mobile network, there cannot exist a single CA.On the basis of "Self-Organized certificate management", we design the trust model based on the threshold cryptography technology and PKI certificate. The model revises and expands the secret sharing scheme. The model builds generating and updating scheme of key component of CA node. At the same time model of combining theory PKI certificate, a certificate issued, the update mechanism, and through the introduction of allegations threshold, a certificate revocation, to function as a complete system.Model includes four components: client nodes, management nodes, the registration centre RA, Virtual Certification CA Center. Each client nodes of model includes two databases: the certificate databases and CRL (certificate revocation list) databases. The simulation results show that: the additional network load and amount of computation nodes is low, the model suite to actual network environment and has a broad prospect.