Privacy-Preserving Content-Based Publish/Subscribe Networks
- Cite this paper as:
- Shikfa A., Önen M., Molva R. (2009) Privacy-Preserving Content-Based Publish/Subscribe Networks. In: Gritzalis D., Lopez J. (eds) Emerging Challenges for Security, Privacy and Trust. SEC 2009. IFIP Advances in Information and Communication Technology, vol 297. Springer, Berlin, Heidelberg
Privacy and confidentiality are crucial issues in content-based publish/subscribe (CBPS) networks. We tackle the problem of end-user privacy in CBPS. This problem raises a challenging requirement for handling encrypted data for the purpose of routing based on protected content and encrypted subscription information. We suggest a solution based on a commutative multiple encryption scheme in order to allow brokers to operate in-network matching and content based routing without having access to the content of the packets. This is the first solution that avoids key sharing among end-users and targets an enhanced CBPS model where brokers can also be subscribers at the same time.