Abstract
A multitude of smart things and wirelessly connected Sensor Nodes (SNs) have pervasively facilitated the use of smart applications in every domain of life. Along with the bounties of smart things and applications, there are hazards of external and internal attacks. Unfortunately, mitigating internal attacks is quite challenging, where network lifespan (w.r.t. energy consumption at node level), latency, and scalability are the three main factors that influence the efficacy of security measures. Furthermore, most of the security measures provide centralized solutions, ignoring the decentralized nature of SN-powered Internet of Things (IoT) deployments. This paper presents an energy-efficient decentralized trust mechanism using a blockchain-based multi-mobile code-driven solution for detecting internal attacks in sensor node-powered IoT. The results validate the better performance of the proposed solution over existing solutions with 43.94% and 2.67% less message overhead in blackhole and greyhole attack scenarios, respectively. Similarly, the malicious node detection time is reduced by 20.35% and 11.35% in both blackhole and greyhole attacks. Both of these factors play a vital role in improving network lifetime.
Highlights
Internet-of-Things (IoT) is about anytime, anywhere service provisioning to end-users; thanks to a plethora of static and mobile devices, such as actuators, sensors, and controllers [1]
The results reveal that the multi-mobile code-based mechanism is better than the single mobile code-based mechanism
It benefits in lower message exchange, less network traffic congestion, and smaller sized Mobile Code (MC)
Summary
Internet-of-Things (IoT) is about anytime, anywhere service provisioning to end-users; thanks to a plethora of static and mobile devices, such as actuators, sensors, and controllers [1] It reinforces quality and reliability in enterprise systems by providing promising processing solutions and resource management [2]. The intense communications between all these devices, some of which are smart (i.e., embedded with cognitive capabilities), have allowed IoT to penetrate every domain from home automation to industry 4.0 revolution [3,4] In this view, various technologies, such as fog, Wireless Sensor Networks (WSNs), 5G, etc., play an important role in augmenting massive and smart interconnection notion [5,6]. An adversary may drop data/control packets and deviate the routes in an internal attack Examples of such attacks include blackhole and greyhole [48]
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