S-CRAHN: A Secure Cognitive-Radio Ad-Hoc Network

Cognitive-radio (CR) technology is to solve the spectrum scarcity problem, make accessible supplementary spectrum bands required for the data transmission in mobile ad hoc networks (MANET) and provide an appropriate level of security for CR networks received far less attention than other areas regarding to common key management schemes for MANET as well. Key management and authentication are two important factors in MANET security. The recent development in Identity-based cryptography has made the method to be a potential candidate for MANET. However the security in CR-MANET has attracted less attention in comparison with other regions. In this article, the authors try to propose a new security scheme for CRMANET called as SCRAHN which is fundamentally on the basis of a threshold identity-based cryptography. This method results in the elimination of SSDF attack trouble in Cognitive radio Ad-Hoc Networks, where the intruder sends wrong results of local spectrum sensing and leads to a wrong spectrum sensing determination in CRs consequently. Following cooperative spectrum sensing scheme, it can find out SSDF attack occurrence, limit intruders’ access to “t” numbers of neighbour nodes for the key updating or delete the intruder nodes from the network.