Special Issue Paper
DEFF: a new architecture for private online social networks
Article first published online: 21 MAR 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Security and Communication Networks
Volume 6, Issue 12, pages 1460–1470, December 2013
How to Cite
Raji, F., Miri, A., Jazi, M. D. and Malek, B. (2013), DEFF: a new architecture for private online social networks. Security Comm. Networks, 6: 1460–1470. doi: 10.1002/sec.533
- Issue published online: 28 NOV 2013
- Article first published online: 21 MAR 2012
- online social network;
- access control;
- broadcast encryption;
- group communication;
- proxy server
In recent years, online social networks (OSNs) have had explosive growth in numbers and popularity. In an OSN, users communicate with each other and share information about themselves. However, limiting the flow of private information across OSNs is very important especially because most OSNs provide insufficient privacy settings to control information leakage. In this paper, we propose a mediated architecture for OSNs that protects users' information from both the OSN provider and unauthorized OSN users. Our proposed approach delegates most of the computation tasks to a semi-trusted proxy server. We exploit a simplified broadcast encryption method in order to design a dynamic, efficient, flexible, and fine-grained (DEFF) control system. In the proposed DEFF system, users are allowed to cryptographically categorize their friends into different relations and to share data with arbitrary groups of them. The results of our analysis indicate that the DEFF system fully protects users' privacy and is very efficient in terms of communication and computation complexities. Copyright © 2012 John Wiley & Sons, Ltd.