Australian Computer Society
Publish/subscribe networks provide an interface for publishers to perform many-to-many communication to subscribers without the inefficiencies of broadcasting. Each subscriber submits a description of the sort of content they are interested in, then the publish/subscribe system delivers any appropriate messages as they are published. Although publish/subscribe networks offer advantages over traditional web-based content delivery, they also introduce security issues. The two security problems that the authors solve are: ensuring that subscribers can authenticate the messages they receive from publishers, and ensuring that publishers can control who receives their content.