FRINK Linked Data Fragments server

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• W2097492999 abstract "Approach: Our approach to integrating access control with INS is based on the assumption that the interface between a resource discovery system and security infrastructure should not be hard. It is inefficient if a user (requestor) has to repeatedly iterate through lists of resources that he is prohibited from using while he searches for the most-optimal accessible resource. One only has to consider a scenario where a user is in an environment with several resources that are inaccesible to him to see how scalability becomes a major issue when adding security to resource discovery. If the resource discovery system has no knowledge about which resources the requestor can access, it could take tremendous computational effort to find an accessible resource. A better approach would be to give the resource discovery system knowledge about the access control lists (ACLs) that protect each of the resources and the access-control groups and capabilities of the requestor. A resource discovery system already knows about the service and performance characteristics of each resource it represents; an access control list is nothing more than an additional characteristic that defines the resource. The idea here is not to leave security entirely up to the resource discovery system, but, instead, to provide the discovery system with “hints” regarding the accessiblity of resources. Security is still enforced by an end-to-end proxy protocol (this protocol is described in our previous work [2]), but the sharing of access information enables the resource discovery system to find resources that are guaranteed to be accessible. Figure 1 shows a system level diagram of our entire security infrastructure. This summary focuses on integrating acess control into INS. INS provides users with a layer of abstraction so that applications do not need to know the availability or exact name of the resource for which they are looking. We extend INS to provide access-controlled resource discovery in two main ways: • Dynamic maintenance of ACLs in INS. We implement a real-time maintenance of access control lists (ACLs) in the INS name resolvers in order to give INS knowledge about how each resource should be protected. • User authorization. We introduce a certificate-based authorization step during the resolution of an INS request in order for INS to know the identity and privileges of a requestor." @default.
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• W2097492999 date "2002-01-01" @default.
• W2097492999 modified "2023-09-27" @default.
• W2097492999 title "Access-Controlled Resource Discovery" @default.
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