Abstract

Establishing trust relationships between routing nodes represents a vital security requirement to establish reliable routing processes that exclude infected or selfish nodes. In this paper, we propose a new security scheme for the Internet of things and mainly for the RPL (Routing Protocol for Low-power and Lossy Networks) called: Metric-based RPL Trustworthiness Scheme (MRTS). The primary aim is to enhance RPL security and deal with the trust inference problem. MRTS addresses trust issue during the construction and maintenance of routing paths from each node to the BR (Border Router). To handle this issue, we extend DIO (DODAG Information Object) message by introducing a new trust-based metric ERNT (Extended RPL Node Trustworthiness) and a new Objective Function TOF (Trust Objective Function). In fact, ERNT represents the trust values for each node within the network, and TOF demonstrates how ERNT is mapped to path cost. In MRTS all nodes collaborate to calculate ERNT by taking into account nodes' behavior including selfishness, energy, and honesty components. We implemented our scheme by extending the distributed Bellman-Ford algorithm. Evaluation results demonstrated that the new scheme improves the security of RPL.

Highlights

  • Smart, low-power and low-processing objects are able to interconnect, interact, cooperate with each other, and transfer sensing data to the Internet using compatible and heterogeneous wireless technologies, where computing and communication systems are seamlessly embedded [1]

  • We introduce a new scheme of routing protocol of IoT (RPL) that supports the definition of collaborative security [4]

  • We propose a new scheme of trusted RPL, which takes into account trust along the path, i.e. from the node to the Border Router (BR)

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Summary

INTRODUCTION

Low-power and low-processing objects (things) are able to interconnect, interact, cooperate with each other, and transfer sensing data to the Internet using compatible and heterogeneous wireless technologies, where computing and communication systems are seamlessly embedded [1] This concept is known as the Internet of Things (IoT) networks. We introduce a new scheme of RPL that supports the definition of collaborative security [4] This scheme named: Metric-based RPL Trustworthiness Scheme (MRTS) uses collaborative trustworthiness evaluation between the different nodes within the network. MRTS enhances RPL routing security by calculating and choosing the most trusted path from the source node to the Border Router (BR). It is worth mentioning that selfishness, energy, and honesty components have been proposed in the literature in the context of clustering WSNs [5] [6] They have been adapted by MRTS in the context of IoT (RPL).

THE ROUTING PROTOCOL FOR LOW-POWER AND LOSSY NETWORKS
RELATED WORK
METRIC-BASED RPL TRUSTWORTHINESS SCHEME
Extended RPL Node Trustworthiness metric
MRTS Evaluation
CONCLUSION

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