This paper deals with the problem of secure cooperative updates for XML documents in distributed systems. In particular, we introduce the basic notions underlying a flow language by using which a user can specify the flow that a given XML document has to follow within a group of cooperating subjects. A key feature of the flow language is to be based on the notion of subject credentials. In addition, we describe a policy language to specify special-purpose authorizations allowing selected subjects to modify or extend a given document flow. Finally, we briefly describe the protocols for verifying that the path followed by a document in a collaborative group agrees with the specified flow and to verify that modifications on a given flow are in accordance with the specified authorizations.

Flow policies: Specification and enforcement

Ferrari E.;
2004-01-01

Abstract

This paper deals with the problem of secure cooperative updates for XML documents in distributed systems. In particular, we introduce the basic notions underlying a flow language by using which a user can specify the flow that a given XML document has to follow within a group of cooperating subjects. A key feature of the flow language is to be based on the notion of subject credentials. In addition, we describe a policy language to specify special-purpose authorizations allowing selected subjects to modify or extend a given document flow. Finally, we briefly describe the protocols for verifying that the path followed by a document in a collaborative group agrees with the specified flow and to verify that modifications on a given flow are in accordance with the specified authorizations.
2004
IEEE International Performance, Computing and Communications Conference, Proceedings
23rd IEEE International Performance, Computing, and Communications Conference, Conference Proceedings, IPCCC 2004
Phoenix, AZ., usa
2004
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2149174
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