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CONTEXT-BASED SECURITY POLICY EVALUATION USING WEIGHTED SEARCH TREES
CONTEXT-BASED SECURITY POLICY EVALUATION USING WEIGHTED SEARCH TREES
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机译:基于加权搜索树的基于上下文的安全策略评估
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摘要
A method, apparatus and computer program product for evaluating a context-based (e.g., XACML) policy having a set of attributes using a weighted index tree having one or more leaves extending from a root node. Each leaf of the tree represents a policy rule. A depth-first path down the leaf represents one or more attributes of the set of attributes that must be present in a request for the rule to be applicable. An input is evaluated against the weighted index tree to generate a response. One type of input is an authorization request, in which case the response is an authorization decision (e.g., permit or deny). Another type of input is a query for a set of entitlements, in which case the response is a set of entitlements.
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