Gaetano Mancini

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This paper deals with the problem of continuous usage control of multiple copies of data objects in distributed systems. This work defines an architecture, a set of workflows, a set of policies and an implementation for the distributed enforcement. The policies, besides including access and usage rules, also specify the parties that will be involved in the(More)
Cloud system peculiarities, such as enormous resources and long-lasting accesses, introduce new security and management challenges. This paper presents an advanced authorization framework based on the Usage Control (UCON) model and the OASIS XACML standard to regulate the usage of Cloud resources. Our framework addresses the issue of long lasting accesses(More)
Cloud Federation is a promising approach to enhance cross-cloud application execution. Nevertheless, such approach emphasizes open challenges in Cloud Computing, such as revoking long-lasting authorization on resources as soon as conditions granting the access right are no longer valid. To tackle this kind of issues, we built a prototype of Cloud Federation(More)
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