… Few existing publish/subscribe middleware have built-in … In particular, we adopt the
publish/subscribe paradigm as the … by building into a policy-based authorization mechanism to …

… middleware should be protected against any network fluctuation such as congestion. To
evaluate the usage of the shared … For example, role-based and policy-based access control [26] …

… As shown in Figure 1, our system contains (1) vehicles which want to share information.
Each vehicle P ubc has a public pubKc and private privKc key and can publish messages on …

… The DDS standard enables applications to exchange data in event-based distributed systems.
… It evaluated policy-based adaptation approaches, reinforcement learning, and supervised …

… , information accountability is complementary to privacy. Shifting to accountability as the basis
for considering information sharing … We develop Publish/Subscribe (Pub/Sub) services to …

… Policy-based systems. There is some work on higher-level … Thus, any policy-based
infrastructure must avoid imposing … IoT is driven by the exchange of data, we feel that middleware …

… problem of synchronization within the MQTT publish/subscribe system is solved by the used
… middleware platform, named NOS, which uses the MQTT protocol for information exchange, …

… the key server to generate fresh shared key material. Periodically refreshing this key material
via subsequent ECDHs strengthens the information security ENTRUST introduces as once …

… From a communication perspective, the publish/subscribe (aka … each other to exchange data.
Data sent by publishers are … the topic-based publish/subscribe implementation MQTT that is …

… from different vendors are expected to communicate and exchange information [8]. Also, new
… All the components of an event-based middleware solution use a publish/ subscribe model; …