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By collaboration, domains share resources effectively. To maintain security properties of individual domains during collaboration is a key issue. When domains employing heterogeneous RBAC policies collaborate by crossdomain role-role mappings, their local SMER constraints may be violated. However, the secure interoperation studied so far does not deal with this threat. We presents the requirement...
Among the five goals of peer-to-peer security, file authenticity and fair trading have attracted the most attention. Reputation and incentive are two traditional systems to deal with file authenticity and fair trading problems, respectively. In this paper, we propose a multilevel reputation system which also serves as the base of an incentive system. By introducing the concept of reputation level...
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