Abstract
In this paper, we describe a component-based software architecture for the Internet of Things in which proxies for Things and services that we call “accessors” interact with one another under a concurrent, time-stamped, discrete-event (DE) semantics. These proxies are analogous to web pages, which proxy a cloud-based service such as a bank, but instead of being designed to interface those services with humans, accessors are designed to interface services and Things with other services and Things. A deterministic DE semantics is combined with a widely used pattern for handling network interactions that we call asynchronous atomic callbacks (AACs). AAC enables many concurrent pending requests to be active at once without blocking and without the treacherous concurrency pitfalls of threads. In effect, our architecture combines AAC with actors where the actor model has been endowed with a temporal semantics. We show how this architecture can leverage the previously reported secure swarm toolkit (SST) to achieve stateof- the-art authentication, authorization, and encryption of interactions across networks.
Highlights
The Internet of Things (IoT) is the class of cyberphysical systems (CPS) that leverage Internet technology for interactions between the physical world and the cyber world
The vision embodied by IoT appeals to the imagination of many—our environment and virtually anything in it will turn “smart” by having otherwise ordinary things be furnished with sensors, actuators, and networking capability, so that we can patch these things together and have them be orchestrated by sophisticated feedback and control mechanisms
The accessors framework described in this paper provides a number of key properties not found in any IoT framework that we know of today:
Summary
Abstract—We describe a component-based software architecture for the Internet of Things in which proxies for Things and services that we call “accessors” interact with one another under a concurrent, time-stamped, discrete-event (DE) semantics. These proxies are analogous to web pages, which proxy a cloud-based service such as a bank, but instead of being designed to interface those services with humans, accessors are designed to interface services and Things with other services and Things. Our architecture combines AAC with actors where the actor model has been endowed with a temporal semantics We show how this architecture can leverage the previously reported Secure Swarm Toolkit (SST) to achieve state-of-the-art authentication, authorization, and encryption of interactions across networks
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