Cryptographic Protocols for Enforcing Relationship-Based Access Control Policies

Pang, Jun; Zhang, Yang

doi:10.1109/compsac.2015.9

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…In [3], access control policies are defined by semantic web technologies. The authors of in [9,2] propose to use hybrid logic as the policy language, this logic has been demonstrated quite powerful and later be used in several works including [22,7,14,17,6,15].…”

Section: Related Workmentioning

confidence: 99%

“…Due to the different designs of the two OSNs' APIs, we can extract the category information of each location for Instagram while not for Twitter. Here, location category information on Instagram is from Foursquare, a popular location-based social network, in which different location categories are organized into a tree structure 15 . In this paper, we take the first layer of the category tree (nine categories) to label each location, including entertainment, university, food, nightlife, outdoor, professional, residence, store and transportation.…”

Section: Offline Behaviormentioning

confidence: 99%

See 1 more Smart Citation

An Empirical Study on User Access Control in Online Social Networks

Zhang²,

Han

et al. 2016

Proceedings of the 21st ACM on Symposium on Access Control Models and Technologies

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In recent years, access control in online social networks has attracted academia a considerable amount of attention. Previously, researchers mainly studied this topic from a formal perspective. On the other hand, how users actually use access control in their daily social network life is left largely unexplored. This paper presents the first large-scale empirical study on users' access control usage on Twitter and Instagram. Based on the data of 150k users on Twitter and 280k users on Instagram collected consecutively during three months in New York, we have conducted both static and dynamic analysis on users' access control usage. Our findings include: female users, young users and Asian users are more concerned about their privacy; users who enable access control setting are less active and have smaller online social circles; global events and important festivals can influence users to change their access control setting. Furthermore, we exploit machine learning classifiers to perform an access control setting prediction. Through experiments, the predictor achieves a fair performance with the AUC equals to 0.70, indicating whether a user enables her access control setting or not can be predicted to a certain extent.

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Section: Related Workmentioning

confidence: 99%

Section: Offline Behaviormentioning

confidence: 99%

An Empirical Study on User Access Control in Online Social Networks

Zhang²,

Han

et al. 2016

Proceedings of the 21st ACM on Symposium on Access Control Models and Technologies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Pang and Zhang [20] used cryptography to solve access control and privacy protection problems in social networks, which also pointed out a new development direction for access control technology in social networks. This kind of access control method is capable to describe situations like 'k-common friends' and 'k-depth'.…”

Section: B Cryptography Based Access Controlmentioning

confidence: 99%

A Smart Access Control Method for Online Social Networks Based on Support Vector Machine

Shan¹,

Liu²,

Wang³

et al. 2020

IEEE Access

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With the rapid development of Internet technology, online social networks (OSNs) has become one of the main ways for people to develop social activities. In order to maintain and strengthen interpersonal relationships, users are willing to share personal behaviors, feelings and other things through OSNs. Whether these resources reveal private information or not depends on the appropriateness of the access control policies set by the owner. However, with the increasing number of friends and complex relationships, it becomes more and more difficult for OSNs users to set appropriate access control policies. Aiming at above problems, a smart access control method for online social networks is proposed based on SVM algorithm to realize smart access control on the basis of integrating relationship types and description information of published content as eigenvectors. The experimental results show that this mechanism can automatically recommend the list of visible friends according to the content published by users and the relationship between users and friends, allowing users to modify the list to obtain the final access control policy, which can effectively protect users' privacy information. INDEX TERMS Online social networks, access control method, support vector machine, machine learning.

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“…Recently, Crampton and Sellwood [22] generalized relationship-based access control to other systems than social networks, they proposed path logic conditions for specifying policies and adopt principle matching for policy evaluation. Besides models, several security protocols based on cryptographic techniques are proposed to enforce relationship-based access control policies, e.g., see [23,24,25,26,27,28,29,30,31].…”

Section: Related Workmentioning

confidence: 99%

A new access control scheme for Facebook-style social networks

Pang

Zhang

2015

Computers & Security

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PrivacyHybrid logic a b s t r a c tThe popularity of online social networks (OSNs) makes the protection of users' private information an important but scientifically challenging problem. In the literature, relationship-based access control schemes have been proposed to address this problem.However, with the dynamic developments of OSNs, we identify new access control requirements which cannot be fully captured by the current schemes. In this paper, we focus on public information in OSNs and treat it as a new dimension which users can use to regulate access to their resources. We define a new OSN model containing users and their relationships as well as public information. Based on this model, we introduce a variant of hybrid logic for formulating access control policies. We exploit a type of category information and relationship hierarchy to further extend our logic for its usage in practice. In the end, we propose a few solutions to address the problem of information reliability in OSNs, and formally model collaborative access control in our access control scheme.

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Cryptographic Protocols for Enforcing Relationship-Based Access Control Policies

Cited by 4 publications

References 32 publications

An Empirical Study on User Access Control in Online Social Networks

An Empirical Study on User Access Control in Online Social Networks

A Smart Access Control Method for Online Social Networks Based on Support Vector Machine

A new access control scheme for Facebook-style social networks

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