ABSTRACT:

The adoption of XACML as the standard for specifying access control policies for various applications, especially web services is vastly increasing. This calls for high performance XACML policy evaluation engines. A policy evaluation engine can easily become a bottleneck when enforcing XACML policies with a large number of rules. In this paper we propose an adaptive approach for XACML policy optimization. We apply a clustering technique to policy sets based on the K-means algorithm. In addition to clustering we find that, since a policy set has a variable number of policies and a policy has a variable number of rules, their ordering is important for efficient execution. By clustering policy sets and reordering policies and rules in a policy set and policies respectively, we formulated and solved the optimal policy execution problem. The proposed clustering technique categorizes policies and rules within a policy set and policy respectively in respect to target subjects. When a request is received, it is redirected to applicable policies and rules that correspond to its subjects; hence, avoiding unnecessary evaluations from occurring. We also propose a usage based framework that computes access request statistics to dynamically optimize the ordering access control to policies within a policy set and rules within a policy. Reordering is applied to categorized policies and rules from our proposed clustering technique. To evaluate the performance of our framework, we conducted extensive experiments on XACML policies. We evaluated separately the improvement due to categorization and to reordering techniques, in order to assess the policy sets targeted by our techniques. The experimental results show that our approach is orders of magnitude more efficient than standard Sun PDP.


Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here


PROJECT TITLE : Adaptive Pulse Wave Imaging Automated Spatial Vessel Wall Inhomogeneity Detection in Phantoms and in-Vivo ABSTRACT: Imaging the mechanical characteristics of the artery wall may aid in the diagnosis of vascular
PROJECT TITLE : An Adaptive and Robust Edge Detection Method Based on Edge Proportion Statistics ABSTRACT: One of the most important preprocessing steps for high-level tasks in the field of image analysis and computer vision is
PROJECT TITLE : Learned Image Downscaling for Upscaling Using Content Adaptive Resampler ABSTRACT: SR models based on deep convolutional neural networks have shown greater performance in recovering the underlying high-resolution
PROJECT TITLE : Multipatch Unbiased Distance Non-Local Adaptive Means With Wavelet Shrinkage ABSTRACT: Many existing non-local means (NLM) approaches either utilise Euclidean distance to quantify the similarity between patches,
PROJECT TITLE : Depth Restoration From RGB-D Data via Joint Adaptive Regularization and Thresholding on Manifolds ABSTRACT: By integrating the properties of local and non-local manifolds that offer low-dimensional parameterizations

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry