The vehicular adhoc network is the type of network.It is self configuring and decentralized architecture. In the vehicular adhoc network two type of communication is possible which is vehicle to vehicle and vehicle to infrastructure. Due to decentralized architecture of vehicular adhoc networks many malicious nodes may join the network which is responsible to trigger various type of active and ...

In this paper we propose security analysis on passive attack for Nalla-Reddy’s ID-AK-2 and ID-AK-3 protocols. Keywors:Passive attack,Tripartite key agreement,Bilinear pairings

In nature of the transmission medium the broadcast, Wireless sensor networks are vulnerable to security attacks. The nodes are placed in a hostile or dangerous environment where they are not tangibly safe in the MANETs. In many application, the data obtained from the sensing nodes need a false, or malicious node could intercept private information or could send false messages to nodes in the ne...

To enhance the performance of single intrusion detection systems (IDSs), collaborative intrusion detection networks (CIDNs) have been developed, which enable a set of IDS nodes to communicate with each other. In such a distributed network, insider attacks like collusion attacks are the main threat. In the literature, challenge-based trust mechanisms have been established to identify malicious n...

The vehicular ad hoc network is the decentralized type of network in which mobile nodes can communicate with each other. Due to self configuring nature of the network malicious nodes join the network which are responsible to trigger various types of active and passive attacks in the network. The jamming attack is the active type of attack in which malicious node select the nodes which will be c...

Security is the major area of concern in communication channel. Security is very crucial in wireless sensor networks which are deployed in remote environments. Adversary can disrupt the communication within multi hop sensor networks by launching the attack. The common attacks which disrupt the communication of nodes are packet dropping, packet modification, packet fake routing, badmouthing atta...

Cognitive radio (CR) network is an excellent solution to the spectrum scarcity problem. Cooperative spectrum sensing (CSS) has been widely used to precisely detect of primary user (PU) signals. The trustworthiness of the CSS is vulnerable to spectrum sensing data falsification (SSDF) attack. In an SSDF attack, some malicious users intentionally report wrong sensing results to cheat the fusion c...

In this article we show that Shim’s new ID-based tripartite multiple-key agreement protocol still suffers from the impersonation attack, a malicious user can launch an impersonation attack on their protocol. Keyword: ID-based, Weil-paring, impersonation attack, tripartite authenticated key agreement, unknown key share attack.