In a large-scale wide-area system such a Grid, security is a prime concern in managing the resources. One approach is to be conservative and implement techniques such as sandboxing, encryption, and other access control mechanisms on all elements of the Grid. However, the overhead caused by such a design may reduce the advantages of Grid computing. Dynamic nature of allocation of resources is required to achieve high utility of public resources in Grids. The issues that must be handled while performing dynamic resource allocation includes secure and federated management of trust and preventing most probable collusions on the part of resource peers and resource brokers. This study examines the integration of the notion of trust into resource management, and managing trust in federated manner using two level hierarchies in the resources. The allocation process is aware of the security implications.
A layered approach for secure-trust and trust aware resource management system called Secure Grid Platform (SGP) is presented. SGP is used to handle resource allocation and to manage inter and intra domain trusts and incentives (based on cooperation level and service differentiation). In SGP we have used work-orders as resource claims. SGP trust mechanism ensures that the work order execution is a deterministic process, since the resource brokers (RBs) should not recommend resource peers (RPs) who cannot be trusted for a requested service. We have also presented a comparison of the SGP with un-trusted model in respect to performance.
|Keywords:||Grid Computing, Mobile Computing, Trust|
Lecturer, Computer Engineering, M. M. Engineering College, Ambala, Haryana, India
Professor and Head, Department of Computer Engineering, M. M. Engineering College, Ambala, Haryana, India
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