Conflict Detection and Resolution in Context-Aware Authorization

Masoumzadeh, A.; Amini, Morteza; Jalili, Rasool

doi:10.1109/ainaw.2007.127

Cited by 23 publications

(6 citation statements)

References 11 publications

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“…Thais [1] proposed a methodology to resolve conflicts occur due to the incompatibility among the users' profiles and/or the shared environment. Amirreza [2] uses comprehensive graph-based approach to resolve conflicts in context. They have used the policy model for context detection which is based on contextual constraints.…”

Section: Related Workmentioning

confidence: 99%

Detecting and Resolving Conflicts in Adaptation Rules for the Context Aware System

Rajarajeswari¹,

Neelanarayanan²

2019

IJRTE

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Context aware systems are embedded in the environment and provide services anytime and everywhere. Context aware system is built upon context information gathered from the environment and the adaptation rule which describes what need to be performed for the context information gathered. Consistent behavior of the context aware system will be ensured by the complete and correct context information and adaptation rules. There may have a situation where conflicts may occur at context level and adaptation rule level. Many researchers presented different methods to detect and resolve conflict in context information level. In this work we proposed a procedure to detect and resolve conflicts in the adaptation. Two different types of conflicts are addressed in this work. We have discussed about the procedure to resolve these two types of conflicts in the adaptation rule.

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Section: Related Workmentioning

confidence: 99%

Detecting and Resolving Conflicts in Adaptation Rules for the Context Aware System

Rajarajeswari¹,

Neelanarayanan²

2019

IJRTE

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“…A strategy-based approach was proposed including support for Recency-Override, Specificity-Override and Deny-Override [14]. Since the "precedence strategy" may not always be able to resolve conflicts issued by hierarchical authorities, conflict graphs can be formed where resolutions are defined in a context-aware manner [15]. In addition to authorizing decisions, Lupu and Sloman (1999) identified modality conflicts through considering both authorized and obliged behaviors [16].…”

Section: Related Workmentioning

confidence: 99%

Semantic-Based Policy Composition for Privacy-Demanding Data Linkage

Lü

Sinnott

Verspoor

2018

2018 17th IEEE International Conference on Trust, Security and Privacy in Computing and Communications/ 12th IEEE International

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Record linkage can be used to support current and future health research across populations however such approaches give rise to many challenges related to patient privacy and confidentiality including inference attacks. To address this, we present a semantic-based policy framework where linkage privacy detects attribute associations that can lead to inference disclosure issues. To illustrate the effectiveness of the approach, we present a case study exploring health data combining spatial, ethnicity and language information from several major on-going projects occurring across Australia. Compared with classic access control models, the results show that our proposal outperforms other approaches with regards to effectiveness, reliability and subsequent data utility.

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“…However, all those strategies are static. Mazzoleni et al [11] argued that XACML policy combining algorithms are not sufficient to integrate policies where there is no centralised control and presented a system to integrate policies for different organisations. Nevertheless, their policy combining algorithm is static.…”

Section: Related Workmentioning

confidence: 99%

Resolving Policy Conflicts - Integrating Policies from Multiple Authors

Fatema

Chadwick

2014

Lecture Notes in Business Information Processing

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Abstract. In this paper we show that the static conflict resolution strategy of XACML is not always sufficient to satisfy the policy needs of an organisation where multiple parties provide their own individual policies. Different conflict resolution strategies are often required for different situations. Thus combining one or more sets of policies into a single XACML 'super policy' that is evaluated by a single policy decision point (PDP), cannot always provide the correct authorisation decision, due to the static conflict resolution algorithms that have to be built in. We therefore propose a dynamic conflict resolution strategy that chooses different conflict resolution algorithms based on the authorisation request context. The proposed system receives individual and independent policies, as well as conflict resolution rules, from different policy authors, but instead of combining these into one super policy with static conflict resolution rules, each policy is evaluated separately and the conflicts among their authorisation decisions is dynamically resolved using the conflict resolution algorithm that best matches the authorisation decision request. It further combines the obligations of independent policies returning similar decisions which XACML can't do while keeping each author's policy intact.

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Conflict Detection and Resolution in Context-Aware Authorization

Cited by 23 publications

References 11 publications

Detecting and Resolving Conflicts in Adaptation Rules for the Context Aware System

Detecting and Resolving Conflicts in Adaptation Rules for the Context Aware System

Semantic-Based Policy Composition for Privacy-Demanding Data Linkage

Resolving Policy Conflicts - Integrating Policies from Multiple Authors

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