scholarly journals Relation extraction for inferring access control rules from natural language artifacts

2014 ◽  
Author(s):  
John Slankas ◽  
Xusheng Xiao ◽  
Laurie Williams ◽  
Tao Xie
Keyword(s):  
Access Control ◽  
Natural Language ◽  
Relation Extraction ◽  
Control Rules ◽  
Access Control Rules

scholarly journals Trust-Based Access Control Model from Sociological Approach in Dynamic Online Social Network Environment

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Seungsoo Baek ◽  
Seungjoo Kim
Keyword(s):  
Social Network ◽  
Access Control ◽  
User Behavior ◽  
Online Social Network ◽  
Sociological Approach ◽  
Access Control Models ◽  
Control Rules ◽  
Access Control Rules ◽  
Dynamic Trust ◽  
Privacy Breaches

There has been an explosive increase in the population of the OSN (online social network) in recent years. The OSN provides users with many opportunities to communicate among friends and family. Further, it facilitates developing new relationships with previously unknown people having similar beliefs or interests. However, the OSN can expose users to adverse effects such as privacy breaches, the disclosing of uncontrolled material, and the disseminating of false information. Traditional access control models such as MAC, DAC, and RBAC are applied to the OSN to address these problems. However, these models are not suitable for the dynamic OSN environment because user behavior in the OSN is unpredictable and static access control imposes a burden on the users to change the access control rules individually. We propose a dynamic trust-based access control for the OSN to address the problems of the traditional static access control. Moreover, we provide novel criteria to evaluate trust factors such as sociological approach and evaluate a method to calculate the dynamic trust values. The proposed method can monitor negative behavior and modify access permission levels dynamically to prevent the indiscriminate disclosure of information.

A Pervasive Polling Secret-Sharing Based Access Control Protocol for Sensitive Information

2011 ◽  
pp. 188-202
Author(s):  
Juan Álvaro Muñoz Naranjo ◽  
Justo Peralta López ◽  
Juan Antonio López Ramos
Keyword(s):  
Access Control ◽  
Secret Sharing ◽  
Collaborative Work ◽  
Sensitive Information ◽  
Control Rules ◽  
Access Control Rules ◽  
File Structure ◽  
Minimum Number ◽  
Message Format ◽  
Access Control Mechanism

This chapter presents a novel access control mechanism for sensitive information which requires permission from different entities or persons to be accessed. The mechanism consists of a file structure and a protocol which extend the features of the OpenPGP Message Format standard by using secret sharing techniques. Several authors are allowed to work in the same file, while access is blocked for not authorized users. Access control rules can be set indicating the minimum number of authors that need to be gathered together in order to open the file. Furthermore, these rules can be different for each section of the document, allowing collaborative work. Non-repudiation and authentication are achieved by means of a shared signature. The scheme’s features are best appreciated when using it in a mobile scenario. Deployment in such an environment is easy and straight.

Trust-Based Usage Control in Collaborative Environment

2010 ◽  
pp. 751-765
Author(s):  
Li Yang ◽  
Chang Phuong ◽  
Amy Novobilski ◽  
Raimund K. Ege
Keyword(s):  
Access Control ◽  
Trust Management ◽  
Partial Information ◽  
Usage Control ◽  
Trust Value ◽  
Access Control Models ◽  
Control Rules ◽  
Collaborative Environment ◽  
Access Control Rules ◽  
Resources Sharing

Most access control models have formal access control rules to govern the authorization of a request from a principal. In pervasive and collaborative environments, the behaviors of a principal are uncertain due to partial information. Moreover, the attributes of a principal, requested objects, and contexts of a request are mutable during the collaboration. A variety of such uncertainty and mutability pose challenges when resources sharing must happen in the collaborative environment. In order to address the above challenges, we propose a framework to integrate trust management into a usage control model in order to support decision making in an ever-changing collaborative environment. First, a trust value of a principal is evaluated based on both observed behaviors and peer recommendations. Second, the usage-based access control rules are checked to make decisions on resource exchanges. Our framework handles uncertainty and mutability by dynamically disenrolling untrusted principals and revoking granted on-going access if access control rules are no longer met. We have applied our trust-based usage control framework to an application of file sharing.

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