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Software Defined Networking (SDN) is an emerging paradigm that changes the way networks are managed by separating the control plane from data plane and making networks programmable. The separation brings about flexibility, automation, orchestration and offers savings in both capital and operational expenditure. Despite all the advantages offered by SDN it introduces new threats that did not exist...
Pervasive computing infrastructure is highly distributed and it is essential to develop security mechanisms that enhance the security of the system by distributing trust among the various infrastructure components. We present a novel access control architecture explicitly designed to distribute trust that combines threshold cryptography, multi-layer encryption, and mediated access to contextual data...
A mobile ad hoc network (MANET) is a collection of mobile nodes that communicate with each other by forming a multi-hop radio network. Security remains a major challenge for these networks due to their features of open medium, dynamically changing topologies, reliance on cooperative algorithms, absence of centralized monitoring points, and lack of clear lines of defense. Design of an efficient and...
Establishing trust in a distributed computing environment is one of the most challenging and important aspects of cluster computing. Achieving optimal performance in clusters forces the migration of processes to other nodes. This is where trust comes into play. A secure trusted environment is needed in order to ascertain the credibility of the participating nodes working together to achieve a goal...
The paper deals with the following topics: network security; identity management, authentication, and authorization; availability and reliability; risk and security management; security and privacy; cryptography and secure protocols; intrusion detection; privacy and trust; global information security; software security and authentication; digital content security; organizational aspects of security;...
Trust plays an important role in all commercial grid and cloud environments. It is the estimation of competence of a resource provider in completing a task based on reliability, security, capability and availability in the context of distributed environment. It enables users to select the best resources in the heterogeneous grid and cloud infrastructure. This paper introduces a novel trust model to...
We find that traditional authentication ways donpsilat act well in MANETs for the features of dynamic topology and non-existence of central facilities in mobile ad hoc networks. This paper presents a distributed trust proving language, which is based on role trust. The solution of constructing credential authentication infrastructure and the problem how to perform automated trust negotiation are also...
This paper presents a case study of authentication, access control, and payment scenarios in the world of digital libraries. The role of an X.500 directory-based informational service in these scenarios is discussed. Password- and certificate-based authentication mechanisms are compared. Problems of mediating access control by broker services are outlined. A framework for managing users' access profiles...
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