Abstract
The Internet of Things (IoT) has changed our lives drastically. Customers, regulatory bodies, and industrial partners are driving us to use IoT. Although IoT provides new opportunities, security remains a key concern while providing various services. It is especially challenging how the data generated from IoT devices can be protected from potential security attacks and how to safeguard the exchange of these data while transiting through different nodes and gateways. In this research, we aim to ensure a safe IoT environment by proposing an efficient key management technique that uses a combination of symmetric and asymmetric cryptosystem to obtain the speed of the former as well as the security benefits of the latter. Our proposal considers a set of Smart Objects (SO) capable of key registration, generation and distribution for IoT data transmission. We used the open-source Message Queuing Telemetry Transport (MQTT) protocol to facilitate communications between the source and the destination nodes. The suitability of the proposed approach is measured experimentally and the results are comparable to existing works with respect to key conversion time, algorithm execution time, number of reuse connections, and bandwidth utilization.
Highlights
Today the Internet of Things (IoT) incorporates almost every aspect of an individual’s life
IoT is rapidly expanding over the Internet, where a safe communication system is essential
We presented an approach defining Smart Objects (SOs) that handles heterogeneous data sources to provide a robust and unified representation of data and to ensure the level of security and reliability associated with each data object
Summary
Today the Internet of Things (IoT) incorporates almost every aspect of an individual’s life. An IoT model facilitates smart objects to communicate extensively across the Internet [1]. In this model, security risks and threats are a big concern. The research community and standardization bodies are currently working to define new methodologies, standards and algorithms for secure key generation, distribution and management with high reliability, robustness and accessibility [2,3,4,5]. In a traditional data communication system, data can be protected by using a single cryptographic key. When data travels through different nodes from a source to a destination, the traditional single key approach is not appropriate. The risk factor will be huge as in a real IoT environment a high volume of data transfer occurs. Real-time authentication and protection are necessary which is time-consuming as well as complex [6,7]
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