Group key management is an important functional building block for any secure multicast architecture. Thereby, it has been extensively studied in the literature. In this paper we present relevant group key management protocols. Then, we compare them against some pertinent performance criteria. Keywords—Multicast, Security, Group Key Management.

Major shortcomings in a recently published group key establishment protocol are described. These shortcomings are sufficiently serious that the protocol should not be used.

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Now-a-days Internet has become the common media of communication. Many group communication application such as pay-per-view, stock quote distribution, voiceand video-conferencing, white-boards, distributed simulations, and replicated servers of all types, etc can easily be conducted on the Internet. For conducting such applications, group key is often needed, which can be established by group k...

Though still in use today, the method of the effective shearing force to evaluate the maximum shear stress in variable depth beams does not stand close scrutiny. It can lead to overestimating the shearing strength of these beams, although it is suggested as a viable procedure by many otherwise excellent codes of practice worldwide. This paper should help to put the record straight. It should wa...

M.B. Ferguson and B.A. McGregor PIRVic (Primary Industries Research Victoria), Department of Primary Industries, Private Bag 105, Hamilton, Victoria 3300, Australia PIRVic (Primary Industries Research Victoria) Department of Primary Industries, 475 Mickleham Rd, Attwood, Victoria 3049, Australia ________________________________________________________________________________ Abstract Genetic im...

Contributory group key management schemes are popularly used for dynamic peer group communications in collaborative environments. Previous contributory group key management schemes require every group member to perform a number of expensive Diffie-Hellman operations whenever the group membership changes. This is not always affordable for devices in resource-constrained networks. In this paper, ...

The key polynomials, defined by Lascoux–Schützenberger, are characters for the Demazure modules of type A. We classify multiplicity-free polynomials. proof uses two combinatorial models first is due to Kohnert. second in terms Searles’ rule quasi-key polynomials Assaf–Searles. Our argument proves a sufficient condition polynomial be multiplicity-free.