Abstract
The vision of the Internet of Things (IoT) is creating an open and shared world connected to everything, making people’s lives more smart, convenient, and efficient. Currently, there are various isolated IoT applications developed by different IoT manufacturers for a single specific function. The IoT nodes are classified into different administrative domains according to their affiliation, resulting in a multi-domain IoT environment. In order to realize the true IoT vision with multi-domain data sharing, this paper introduces a multi-domain IoT data sharing architecture based on blockchain to address the current phenomenon of information isolation. A control approach including capability-based cross-domain access control and risk-based access control in a domain is proposed to ensure the security of full data sharing processes. With these properties, diverse isolated applications can constitute a whole system for secure data exchange.
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