| BPL(Broadband over Power Line Networks) is a high-speed power linecommunication technology which utilizes power line to transmit information. In recentyears, with the development of smart home, internet of things, and the demand ofpeople to access the Internet anytime and anywhere, the broadband over power linecommunication gains more and more attention because of its advantages of rapiddeployment and wide coverage, etc.The IEEE1901standard specifies Medium Access Control and Physical Layerspecifications for broadband over power line networks which utilizes robust securitynetwork (RSN) as its default security scheme. This paper analyzes the three mainsections of the robust security network association (RSNA) protocol: the CCMPprotocol, access control based on IEEE802.1x and dynamic key management. Ananalysis of RSNA protocol shows that robust security network(RSN) has strong security,but RSN provides opportunities for hackers to produce DoS(Denial of Service) orDDoS(Distributed DoS) attacks.In this paper, we propose a new technique for key exchange which is able toprovide an enhance security in comparison with4-way handshake protocol. Thisenhanced technique is able to provide security against DoS attacks. The proposed modelhas been verified analytically by the theory of strand space which is a part of formalanalysis in the analysis of security protocols. |