Method for guaranteeing security of single-transceiver time-slot type distribution CR MAC (Cognitive Radio Multiple Access Control) protocol

Abstract

The invention provides a security mechanism with combination of a secure channel switching strategy and a curtain-style digital signature scheme, which aims at guaranteeing the security of a single-transceiver time-slot type cognitive radio C-MAC (Cognitive-Multiple Access Control) protocol and preventing possible channel preemptive-type denial of service attack. The method comprises the following steps of: carrying out random sequencing and encrypting by utilizing an available channel list so that malicious nodes can not monitor channel consultation information between communicating parties, thereby avoiding the malicious nodes from seizing channels; and secondly, establishing a signature scheme with a curtain-type relational structure by adopting two hash functions to solve the problem that the correlation of a plurality of signature process needs to be guaranteed when a cognitive ratio network adopts digital signatures. The invention guarantees the suspensive communication caused by withdrawing a master user before the cognitive ratio C-MAC protocol can be accessed into an idle channel to continuously communicate under the situation of suffering from denial of service attack.

Description

technical field [0001] The present invention proposes a security mechanism combining a security channel switching strategy and a curtain digital signature scheme. Denial of service attack, to ensure that the cognitive radio C-MAC protocol can access the idle channel to continue the communication that was suspended due to backing off the main user in the case of a denial of service attack. Background technique [0002] There are serious security problems in the MAC layer of cognitive radio networks. Denial of service attack is one of them. At present, the relevant research at home and abroad only focuses on the demonstration of the danger of the attack, and there is no effective method for how to prevent the attack. The paper "MAC-Layer Misbehaviors in Multi-Hop CognitiveRadio Networks" studies the denial of service attack in cognitive networks in its own cognitive model. They believe that the denial of service attack is that the attacker weakens the common control channel ...

AI Technical Summary

Problems solved by technology

However, in a cognitive radio network, when a cognitive user withdraws from the primary user in the event of an attack, it may go through several handovers before finally accessing an idle channel, which requires the ability to link several authentication sessions to ensure Overall security, which is also required in the centralized draft of IEEE 802.22, however, the draft does not give a specific implementation plan

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