Design of a Confidentiality and Access Control Solution for Content-Based Publish/Subscribe Systems

Content-based publish/subscribe (pub/sub) is a promising paradigm for building asynchronous distributed applications. As the number of participants in the network increases, an important issue we need to consider is the privacy of the data transmitted over the pub/sub network. When such sensitive information is being sent, it should be possible to control how the data is disclosed and to whom. In this paper, we address the issue of encrypted access control in a publish/subscribe system that provides content-based routing through advertisement messages. We show that our approach can effectively improve the system's safety performance without full trust network support.