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Research Publications (Engineering and Built Environment)

Permanent URI for this collectionhttp://ir-dev.dut.ac.za/handle/10321/215

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    Services and applications security in IoT enabled networks
    (IEEE, 2018-12) Khumalo, Zephaniah Philani; Nleya, Bakhe; Gomba, Ndadzibaya Masimba; Mutsvangwa, Andrew
    5G wireless together with optical backbone networks are expected to be the main pillars of the envisaged next /future generation networking (N/FGN) infrastructures. This is an impetus to practical realization of an IoT network that will support and ensure relatively higher bandwidth as well as enhanced quality of service (QoS) in both access and core network sections. The high-speed wireless links at the network peripherals will serve as a conducive platform for device-to-device (D2D) communication. D2D driven applications and services can only be effective as well as secure assuming the associated machine type communication devices (MTCDs) have been successfully verified and authenticated. Typically, D2D type services and applications involve the interaction of several MTCDs in a group. As such, secure and effective D2D group-based authentication and key agreement (AKA) protocols are necessary. They need to inherently achieve efficacy in maintaining the group key unlink-ability as well as generate minimal signalling overheads that otherwise may lead to network congestion. In this paper we detail a secure and efficient Group AKA (Gr-AKA) protocol for D2D communication. Its performance is compared to that of existing similar protocols and is found to comparably lower both computational as well as signalling overhead requirements. Overall the analysis shows that the Gr-AKA protocol improves performance in terms of fulfilling D2D communication's security requirements.
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    A privacy and security preservation framework for D2D communication based smart grid services
    (IEEE, 2020-04-30) Bopape, Lebogang P.; Nleya, Bakhe; Khumalo, P.
    Long-Term-Evolution (LTE) based Device-to-Device (D2D) communication in future generation networks are envisaged to become the basis for deployment of various applications and services in Smart Grids (SGs). However related privacy and security aspects are also under serious consideration especially when dealing with large-scale deployment of services and applications related D2D groups. Current and legacy related algorithms cannot be applied directly to this new paradigm shift (i.e D2D communication and group formations). Using the IoT as the pillar communication subsystem for SGs, the service providers can deploy several applications and services some of which may include the acquisition and storage of personal information of individual SG users. However, the challenge will always be in the strict preservation of privacy and security of their personal data and thus a necessity in eliminating such concerns. In this paper we propose a general framework that employs a Group Key Management (GKM) mechanism to ensure enhanced privacy and security especially during the discovery and communication phases. We further mitigate on the impact of enhanced privacy and security in SG services and applications.