A Strategy of Defending DoS Attacks Against Broadcast Authentication in Wireless Sensor Networks
Younan Yuan · Chuangan jishu xuebao · 2011
When digital signatures are applied in the broadcast authentication,the related networks are vulnerable to the DoS(Denial of Service)attacks.For example,attackers can keep broadcasting bogus messages,which may induce the exhaustion of both the communication and computation resources.In this paper,based on both a week authentication and a reputation grade,a new scheme is proposed to defend against such DoS attacks.For the cluster-based wireless sensor networks,our scheme uses the Chinese Remainder Theorem(CRT)and one-way function to execute the week authentication.In the meantime,we apply a reputation management to grade the nodes.Our stimulation experiments show that,compared with the schemes of P.Ning and R.Wang,our scheme expressed better advantages on the security,the effectiveness and the ability of defending the DoS attacks against the broadcast authentication.