Entity authenticating system and method of cognitive radio network based on hierarchical structure

Abstract

The invention provides entity authenticating system and method of a cognitive radio network, which relates to the relevant applying field in information safety technology. The entity authenticating system and the method of the cognitive radio network based on a hierarchical structure ensure the safe communication between secondary users by authenticating the identities of the secondary users in the cognitive radio network. In the process of sending the authentication request by the secondary user, the credibility is judged, and the public key verification is allowed to further execute only in the premise that the condition is satisfied. The trusting mechanism can effectively prevent the malignant users from generating multiple attacks in the network. The safety is based on n RSA algorithm, and simultaneously the symmetrical keys and the public key system are combined. In the premise of ensuring that the authenticating safety is not decreased, the authenticating efficiency is greatly enhanced, thereby effectively decreasing the authenticating delay. In addition, the invention has obvious effects on the safety problems of preventing the reproducing attack, controlling network congestion and the like.

Description

technical field [0001] The present invention relates to the application field of cognitive radio network security in information security technology, in particular to an entity authentication system and a method thereof based on a layered cognitive radio network. Background technique [0002] Cognitive radio users have to continuously access and exit the cognitive radio network during the communication process, so the topology of the network changes dynamically. In a cognitive radio network, the service quality of secondary users and primary users should be basically the same, but their service permissions are different in priority. This makes the cognitive radio network more complex, and it is more difficult to effectively control the operation of the entire network, leaving more opportunities for the opponent. The network faces the following security issues: [0003] (1) Dynamic changes of network topology and members: Due to the random access and exit of nodes, the topo...

AI Technical Summary

Problems solved by technology

[0009] Since the problem of frequent spectrum switching in cognitive radio networks is not considered, the authentication delay of this type of entity authentication scheme will have a great impact on the efficiency of the scheme

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