Research on the Key Agreement and Authentication of Cognitive Radio Networks
Identity authentication is one of the key problems to be solved in cognitive radio networks. Current authentication mechanisms for cognitive radio networks are based on PPP Extensible Authentication Protocols. Future cognitive radio network can fusion current wireless standards. However, security requirements of various wireless standards are different which leads to current authentication mechanisms are not suitable for cognitive radio networks. Therefore, an identity authentication mechanism based on Certification Authority (CA) is proposed in this paper. The mechanism adopts SIM authentication for terminal users and secure tunnel +certificates for servers. CA can resolve identity authentication problem of base station, assure security of base station and CA by secure tunnel in core networks. And current Challenge Handshake Protocol is also improved; challenge handshake exists in whole communication process which resolves connection robbing problem.