An Introduction to the Role Based Trust Management Framework RT

Abstract

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More Practical Application of Trust Management Credentials

“…This generation still did not provide any mechanism enabling delegation to be separated from identity of the entity. Introduction of delegation based on atributes (as opposed to identity) was introduced in the next generation, represented by a family of Role-based Trust management (RT) languages [8], [16], [17]. Security policies are represented by defining a formalism using credentials to establish trust in distributed, decentralized access control systems.…”

A Role Based Trust Model for Peer to Peer Systems Using Credential Trees

“…The introduction of RT framework [4] enables subject abstraction and supports distributed storage and discovery of credentials. Subject abstraction is the process of expressing the properties of the subject along with the attributes.…”

Trust and privacy management support for context-aware service platforms

“…While trust management support related to the provisioning of identities [3] and authorization roles [31] is already addressed in the litera-ture, trust management support considering trust aspects related to the provisioning of context information is not properly supported. Existing approaches for trustworthiness evaluation of context providers propose to address trust as an attribute of the context information, and position trustworthiness as one of the Quality of Context (QoC) attributes.…”

“…Role-based Trust Management (RT) [31] is a family of languages (RT 0 , RT 1 , RT 2 , RT T , RT D , and RT ⊖ ) for distribute authorization and delegation. The main motivation behind RT is that an authorization decision in a distributed system depends on attributes of a principal that are in some cases unknown to the decision maker.…”

“…The meaning of the authorization policy must be expressed elsewhere and there is no implicit meaning associated with this role. For further examples of policies and credentials please consult Czenko et al [31].…”