Nowadays Radio Frequency Identification (RFID) systems have appeared in lots of identification and authentication applications. In some sensitive applications, providing secure and confidential communication is very important for end-users. To this aim, different RFID authentication protocols have been proposed, which have tried to provide security and privacy of RFID users. In this paper, we a...

Pease et al. introduced the problem of Byzantine Generals (BGP) to study the effects of Byzantine faults in distributed protocols for reliable broadcast. It is well known that BGP among n players tolerating up to t faults is (efficiently) possible if and only if n > 3t. To overcome this severe limitation, Pease et al. introduced a variant of BGP, Authenticated Byzantine General (ABG). Here play...

We propose a routing protocol for wireless networks. Wireless routing protocols allow hosts within a network to have some knowledge of the topology in order to know when to forward a packet (via broadcast) and when to drop it. Since a routing protocol forms the backbone of a network, it is a lucrative target for many attacks, all of which attempt to disrupt network traffic by corrupting routing...

The wireless communication with delivering variety of services to users is growing rapidly in recent years. The third generation of cellular networks (3G), and local wireless networks (WLAN) are the two widely used technologies in wireless networks. 3G networks have the capability of covering a vast area; while, WLAN networks provide higher transmission rates with less coverage. Since the two n...

Recently, Chen and Deng (2009) proposed an interesting newmutual authentication protocol. Their scheme is based on a cyclic redundancy code (CRC) and a pseudo-random number generator in accordance with the EPC Class-1 Generation-2 specification. The authors claimed that the proposed protocol is secure against all classical attacks against RFID systems, and that it has better security and perfor...

With the rapid development of vehicular ad hoc Network (VANET), it is gaining significant popularity and receiving increasing attentions from academics and industry in security and efficiency. To address security and efficiency issues, a selfauthentication and deniable efficient group key agreement protocol is proposed in this paper. This scheme establishes a group between road-side unit (RSU) ...

Nodes in ad hoc networks generally transmit data at regular intervals over long periods of time. Recently, ad hoc network nodes have been built that run on little power and have very limited memory. Authentication is a significant challenge in ad hoc networks, even without considering size and power constraints. Expounding on idealized hashing, this paper examines lower bounds for ad hoc broadc...

Cloud Computing is the emerging and prominent technology in IT world. Rather than setting up, the infrastructure, platform and services separately for each and every IT industry, are kept collaboratively, which can be accessed by numerous users, in turn reduces the cost of setup and maintenance. Numerous organizations access the services, use the infrastructure and platform from the communal da...

Most ad hoc networks do not implement any network access control, leaving these networks vulnerable to packet injection attacks where a malicious node injects packets into the network with the goal of depleting the resources of the nodes relaying the packets. To prevent such attacks, it is necessary to employ authentication mechanisms that ensure that only authorised nodes can inject traffic in...

In VANETs, vehicles broadcast messages to other nearby vehicles to exchange information among them about their surroundings. This broadcasting of messages may enhance road safety and traffic efficiency, which is possible only if the messages announced are true and could be relied upon. However, the presence of faulty and malicious messages in the network may lead to greater security threats. Th...