Identity-based encryption (IBE) systems are relatively recently proposed; yet they are highly popular for messaging applications since they offer new features such as certificateless infrastructure and anonymous communication. In this paper, we intended to propose an IBE infrastructure for messaging applications. The proposed infrastructure requires one registration authority and at least one p...

Recent studies showed potential for using component frameworks for building flexible adaptible applications for deployment in distributed environments. However this approach is hindered by the complexity of deployment of component-based applications, which usually involves a great deal of configuration of both the application components and system services they depend on. In this paper we propo...

Heterogeneous and distributed nature of the Internet makes it very diicult to customize security protocols and policies in order to satisfy the security needs of applications. Celestial network security management project addresses this issue through building an infrastructure that can dynamically set up inter-domain secure communication channels upon the requests of applications. Celestial Sys...

We have witnessed successes of production grids and various grid applications in last decade. Motivated by previous and current grid initiatives and raising science community demands for computing resources, project CRO-GRID was initiated. CRO-GRID is a national multi-project whose goals are introduction of grid and cluster technologies to science community and industry and development of distr...

rapid growth of e-commerce has made the competition quite different. in this new environment customers have wide choices and are looking forward to the support which guarantees the delivery of what they have chosen. this leads to complexity in the relationship between the provider and the customer which obviously is made more in a b2b environment. service level agreement (sla) is a key tool to ...

Based on our experience with a collection of prototypical ubiquitous computing applications, we have identified a number of common basic tasks which led to the design of some simple mechanisms that we have found useful for structuring and implementing such applications. Building upon these mechanisms, we have created a software infrastructure to support the development of tag-based ubiquitous c...

Recent advances in sensor technologies, wireless communication, powerful mobile devices, and wearable computers strongly support novel types of applications. Especially in healthcare, telemonitoring applications will make use of this new technology to improve the quality of treatment and care for patients and the elderly. These telemonitoring applications require an infrastructure that is able ...

In the following, we will summarize the latest developments in the areas of Grid and Cloud Computing. With the aid of the EU funded project DEISA (Distributed European Infrastructure for Supercomputing Applications), we will explain design, development, and use of e-Infrastructures, and application enabling and implementation. The second part will briefly present three science applications and ...