Hierarchical access control to ensure multiple levels of access privilege for group members is required in many environments, such as hierarchically managed organizations and multimedia applications. In this paper, to efficiently and effectively achieve this goal, we propose a distributed key management scheme whereby each SG (Service Group) maintains an SG server. This server is utilized to ma...

We consider a key distribution scheme for securing node-to-node communication in sensor networks. While most schemes in use are based on random predistribution, we consider a system of dynamic pairwise keys based on design due to Ren, Tanmoy and Zhou. We design and analyze a variation of this scheme, in which capturing a node does not lead to security threats for the past communication. Instead...

Secure Group Communication is very critical for applications like board-meetings, group discussions and teleconferencing. Managing a set of secure group keys and group dynamics are the fundamental building blocks for secure group communication systems. Several group key management techniques have been proposed so far by many researchers. Some schemes are information theoretic and some are compl...

Authentication is crucial for large and distributed systems, such as cyber-physical infrastructures. The focus of this paper is on the secure key distribution must be secure enough to any attempts to compromise the system. we first overview the key management scheme how probabilistic argumentation is applicable to modern public-key cryptography as an relevant gadget to evaluate webs of trust. W...

The optimal management of distributed generation (DG) enhances the efficiency of the distribution system; On the other hand, increasing the interest of customers in optimizing their consumption improves the performance of DG. This act is called demand side management. In this study, a new method based on the intelligent algorithm is proposed to optimal operate the demand side management in the ...

Abstract Due to its complexity, the issue of goods distribution must be approached in a much broader context, highlight consistency and prospects such sector, taking into account diversity all forms – retail, wholesale, medium trade, etc. And on other hand, need correctly evaluate decisive role both development production, but also modernization promotion consumption, so that it is close sector...