A Secure Protocol in MAC Layer of Cognitive Radio Networks

This paper presents a new method of denial of service attack, using a digital signature scheme based on NTRU and proposed a new security channel switching strategy. By using the method of NTRU to digital signature scheme, a new secure channel switching strategy is proposed to resist the denial of service attack, which can ensure that in the process of protocol, even if there was a denial of service attack, both sides of communication still can quickly find the available channels, and can continue the data transmission paused before. In this paper, the safety performance analysis of new protocol is given and compared with C-MAC protocol in simulation experiments. The simulation results show that the proposed secure MAC protocol can effectively resist the denial of service attack.