Key establishment in sensor networks is a challenging problem because asymmetric key cryptosystems are unsuitable for use in resource constrained sensor nodes, and also because the nodes could be physically compromised by an adversary. We present three new mechanisms for key establishment using

and their views have been analyzed using fuzzy cognitive maps. Results suggest that having vision, ability to analyze, having systems thinking, ability to question, creativity, ability to make synergy and ability to create advantage are the main elements of strategic thinking in successful managers of holding

The importance of labour and technology to the success of the rail business should not be underestimated. Labour productivity and asset efficiency determine rail’s cost structure which is the basis of success in a competitive market. To be a successful carrier of long haul- bulk commodities simply requires being the cheapest because customers are primarily seeking low cost service. As observed in the review of rail’s marketing effort it is possible to gain incremental value from doing something differently (their distribution business brought together a mix of service features that have led to expansion in the size and value of that segment), but at this time rail do not have a core advantage in distribution and logistics, it does in bulk haul commodities over longer distances. After deregulation in 1983 and before March 1985 rail reduced staff numbers only by voluntary means, in accordance with a

Abstract-A new signature scheme is proposed, together with an imple-mentation of the Diffie-Hellman key distribution scheme that achieves a public key cryptosystem. The security of both systems relies on the difficulty of computing discrete logarithms over finite fields. I.

this paper, we provide a framework in which to study the security of key pre-distribution schemes, propose a new key pre-distribution scheme which substantially improves the resilience of the network compared to previous schemes, and give an in-depth analysis of our scheme in terms of network

In this paper we analyse the well known Needham-Schroeder Public-Key Protocol using FDR, a refinement checker for CSP. We use FDR to discover an attack upon the protocol, which allows an intruder to impersonate another agent. We adapt the protocol, and then use FDR to show that the new protocol

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Our goal is to develop a visual monitoring system that passively observes moving objects in a site and learns patterns of activity from those observations. For extended sites, the system will require multiple cameras. Thus, key elements of the system are motion tracking, camera coordination

the key elements of the emergent technology of “Smart Dust ” and outline the research challenges they present to the mobile networking and systems community, which must provide coherent connectivity to large numbers of mobile network nodes co-located within a small volume.

We provide formal definitions and efficient secure techniques for • turning noisy information into keys usable for any cryptographic application, and, in particular, • reliably and securely authenticating biometric data. Our techniques apply not just to biometric information, but to any keying