A method and device for enhancing Ad hoc network security and cooperation mechanism

Abstract

The invention is to provide a method to enhance Ad hoc net security and cooperation mechanism. The method comprises the following stages: an initializing stage which is used to distribute a pair of keys and set initial reputation values for new nodes jointing in the net; a note request stage which is used to send a note request to a neighboring node broadcast when the current note of the node cannot pay for the activity transaction; an identity investigation stage which is used for the neighboring node to monitor the behavior of the node, evaluate the different behaviors, calculate the localreputation value and divide the nodes into credible and incredible ones according to the reputation value; a note management stage which is used for the neighboring node to firstly search the node reputation value in a respective reputation table thereof when receiving the node note request and to issue a plurality of notes to the requesting node if the node reputation value is above the threshold value, wherein, in the activity, the node note would have corresponding changes and updates according to the requirement; and a routing and data transferring stage which is used to select routing according to the node reputation.

Description

technical field [0001] The invention belongs to the technical field of communication security, in particular, it is a method for enhancing Ad hoc network security and cooperation mechanism. Background technique [0002] The wireless Ad hoc network is formed by a group of autonomous wireless nodes or terminals cooperating with each other, independent of the fixed infrastructure, and adopts a distributed management network. The Ad hoc network is considered to be the most promising terminal network to be adopted in the solution of the next generation mobile communication system, and it is one of the core components of the future mobile communication technology. [0003] The cooperation of nodes in Ad hoc network is a very important issue. On the one hand, due to the limited transmission distance of nodes, communication between two nodes that are not within the signal coverage of each other can only be completed through the cooperation of intermediate nodes. Each node in Ad ho...

AI Technical Summary

Problems solved by technology

This method does not require hardware support, but the algorithm is complex and the burden on nodes is relatively heavy, which cannot really motivate nodes to participate in the network.

[0008] As for the punishment of uncooperative nodes, initially they simply bypassed bad nodes and did not take corresponding punishment measures; CONFIDANT(Cooperation Of Nodes: Fairness InDynamic Ad- hoc NeTworks) and CORE (COllaborative REputation mechanism) have adopted only punishment but no reward, non-cooperative nodes will be permanently excluded from the network, and unintentional errors of nodes cannot be tolerated; OCEAN (Observation-based Cooperation Enforcement in Ad hoc Networks) and LARS (Locally Aware Reputation System) adopts the second chance mechanism, which can tolerate unintentional node errors, but brings repeated node attacks

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