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Provenance, describes how a data item came to be its current state. A Directed Acyclic Graph, nature of the provenance poses challenges to access control models and querying languages. Access control policies are needed to protect the security of data provenance. In this paper, we apply proposed notions of regular expression for provenance as the structure of a provenance graph is very large. We use...
Open Provenance Model (OPM) is a provenance model that can capture provenance data in terms of causal dependencies among the provenance data model components. Causal dependencies are relationships between an event (the cause) and a second event (the effect), where the second event is understood as a physical consequence of the first. Causal dependencies can represent a set of entities that are necessary...
With the increased development of cloud computing, access control policies have become an important issue in the security filed of cloud computing. Semantic web is the extension of current Web which aims at automation, integration and reuse of data among different web applications such as clouding computing. However, Semantic web applications pose some new requirements for security mechanisms especially...
XACML and its reference implementation can not directly support quantified risk adaptive access control, because there are several special requirements to specify and enforce the policies in risk adaptive access control: the elements in these policies, such as risk, risk level, are not covered; and risk in quantified risk adaptive access control would be mutable, accumulated and required to be continuously...
The purpose of grid computing is to enable coordinated resource sharing and support cooperative work between different domains in dynamic grid environments. In order to protect each participant’s privilege and security, a secure and efficient access control is essential. This paper presents a new approach of access mechanism based on trust relationships across domains. A new calculation method of...
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