Time Validity in Role-Based Trust Management Inference System

Felkner, Anna; Kozakiewicz, Adam

doi:10.1007/978-3-642-22365-5_2

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…Inference rules with time validity for RT 0 were originally introduced in a slightly different way in [14]. In [13] we tried to extend the potential of RT T language by adding time validity constraints. Most permissions are in fact given for fixed periods of time, permanent permissions are less common.…”

Section: A Time Validity In Rt Tmentioning

confidence: 99%

“…All the semantics previously defined for RT T + , set-theoretic (which maps roles to a set of entity names), operational semantics (where credentials can be derived from the initial set of credentials using a set of inference rules [13]), and logic-programming (where credentials are translated into a logic program [12]), are still valid, meaning that proofs of the soundness and the completeness of that semantics are also valid.…”

Section: Example 63 (The Right Order Of Signature)mentioning

confidence: 99%

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More Practical Application of Trust Management Credentials

Felkner

Kozakiewicz

2015

Annals of Computer Science and Information Systems

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Abstract-Trust management is an approach to access control in distributed open systems, where access control decisions are based on policy statements made by multiple principals. The family of Role-based Trust management languages (RT) is an effective means for representing security policies and credentials in decentralized, distributed, large scale access control systems. It provides a set of role assignment credentials. A credential provides information about the privileges of users and the security policies issued by one or more trusted authorities.The main purpose of this paper is to show how extensions can make the RT family languages more useful in practice. It shows how security policies can be made more realistic by including timing information, maintaining the procedure or parameterizing the validity of credentials.

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Section: A Time Validity In Rt Tmentioning

confidence: 99%

Section: Example 63 (The Right Order Of Signature)mentioning

confidence: 99%

More Practical Application of Trust Management Credentials

Felkner

Kozakiewicz

2015

Annals of Computer Science and Information Systems

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“…So far the family consists of: RT 0 , RT 1 , RT 2 , RT T , RT D languages [2], [5]- [7] which are progressively increasing in expressive power and complexity. For language RT T which is backwards compatible with RT 0 , RT 1 and RT 2 , in [8] time validity of credentials is proposed. The extended versions of these languages are referenced as RT T + , RT 2+ , RT 1+ , and RT 0+ .…”

Section: Rt-family Trust Management Languagementioning

confidence: 99%

“…B.main(?rol, ?dom, ?rig, ?lev) in V (8) where: rol -may take values from set {ADMIN,USER,AUDIT}, dom -may take all defined domains, right -may take all defined values, lev -may take all defined values.…”

Section: Main Rolementioning

confidence: 99%

Model of User Access Control to Virtual Machines Based on RT-Family Trust Management Language with Temporal Validity Constraints – Practical Application

Lasota,

Kozakiewicz

2012

JTIT

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The paper presents an application of an RT-family trust management language as a basis for an access control model. The discussion concerns a secure workstation running multiple virtual machines used to process sensitive information from multiple security domains, providing strict separation of the domains. The users may act in several different roles, with different access rights. The inference mechanisms of the language are used to translate credentials allowing users to access different functional domains, and assigning virtual machines to these domains into clear rules, regulating the rights of a particular user to a particular machine, taking into account different periods of validity of different credentials. The paper also describes a prototype implementation of the model.

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“…Definition 2: from [46] The initial set of formulae of an inference system over a set C P of RT T + credentials are all in the form: c in v ∈ C P for each credential c valid in time v in C P. The inference rules of the system are the following:…”

Section: Inference System Over Rt Tmentioning

confidence: 99%

How the Role-Based Trust Management Can Be Applied to Wireless Sensor Networks

Felkner

2012

JTIT

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Trust plays an important role in human life environments. That is why the researchers has been focusing on it for a long time. It allows us to delegate tasks and decisions to an appropriate person. In social sciences trust between humans was studied, but it also was analyzed in economic transactions. A lot of computer scientists from different areas, like security, semantic web, electronic commerce, social networks tried to transfer this concept to their domains. Trust is an essential factor in any kind of network, whether social or computer. Wireless sensor networks (WSN) are characterized by severely constrained resources, they have limited power supplies, low transmission bandwidth, small memory sizes and limited energy, therefore security techniques used in traditional wired networks cannot be adopted directly. Some effort has been expended in this fields, but the concept of trust is defined in slightly different ways by different researchers. In this paper we will show how the family of Role-based Trust management languages (RT) can be used in WSN. RT is used for representing security policies and credentials in decentralized, distributed access control systems. A credential provides information about the privileges of users and the security policies issued by one or more trusted authorities.

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Time Validity in Role-Based Trust Management Inference System

Cited by 6 publications

References 5 publications

More Practical Application of Trust Management Credentials

More Practical Application of Trust Management Credentials

Model of User Access Control to Virtual Machines Based on RT-Family Trust Management Language with Temporal Validity Constraints – Practical Application

How the Role-Based Trust Management Can Be Applied to Wireless Sensor Networks

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