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.
Privacy-preserving content-based publish/subscribe networks
IFIP SEC 2009, 24th International Information Security Conference, May 18-20, 2009, Pafos, Cyprus
© Springer. Personal use of this material is permitted. The definitive version of this paper was published in IFIP SEC 2009, 24th International Information Security Conference, May 18-20, 2009, Pafos, Cyprus and is available at : http://dx.doi.org/10.1007/978-3-642-01244-0_24
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