Abstract
Cognitive radio (CR) has been introduced to accommodate the steady increment in the spectrum demand. Wireless security in CR network (CRN) is a challenging technical area due to the dynamic and unique characteristics of CRNs. As a cognitive node can dynamically join or leave the spectrum, providing secure communication becomes problematic and requires more investigation. Authentication is a primary security property in wireless networks, wherein the identity of a cognitive node is verified before providing access to available resources. In this paper, a two-level authentication scheme for communication in a CRN is proposed. Before joining the network, a CR node is validated by obtaining security credentials from an authorized point. The proposed scheme relies on public- and symmetric-key cryptography, instead of using a digital signature-based approach. It encrypts data between the communicating nodes in order to improve network security in terms of resource availability and accessibility. This mitigates attacks such as reflection attack , denial of service attack , and man-in-the-middle attack . The scheme has been evaluated and verified in terms of security functionality, its correctness, and the performance, which shows less computation and communication requirements.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have