Paper 2010/491

A Collaborative Framework for Privacy Protection in Online Social Networks

Yan Zhu, Zexing Hu, Huaixi Wang, Hongxin Hu, and Gail-Joon Ahn


With the wide use of online social networks (OSNs), the problem of data privacy has attracted much attention. Several approaches have been proposed to address this issue. One of privacy management approaches for OSN leverages a key management technique to enable a user to simply post encrypted contents so that only users who can satisfy the associate security policy can derive the key to access the data. However, the key management policies of existing schemes may grant access to unaurhorized users and cannot efficiently determine authorized users. In this paper, we propose a collaborative framework which enforces access control for OSN through an innovative key management focused on communities. This framework introduces a community key management based on a new group-oriented convergence cryptosystem, as well as provides an efficient privacy preservation needed in a private OSN. To prove the feasibility of our approach, we also discuss a proof-of-concept implementation of our framework. Experimental results show that our construction can achieve the identified design goals for OSNs with the acceptable performance.

Available format(s)
Publication info
Published elsewhere. The 6th International Conference on Collaborative Computing: Networking, Applications and Worksharing, 2010
CryptographyAccess ControlSocial NetworkConvergence
Contact author(s)
yan zhu @ pku edu cn
2010-09-19: received
Short URL
Creative Commons Attribution


      author = {Yan Zhu and Zexing Hu and Huaixi Wang and Hongxin Hu and Gail-Joon Ahn},
      title = {A Collaborative Framework for Privacy Protection in Online Social Networks},
      howpublished = {Cryptology ePrint Archive, Paper 2010/491},
      year = {2010},
      note = {\url{}},
      url = {}
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