Abstract
The application of the Internet of Things (IoT) is resulting in smart and advanced technology. The smart cities involve smart utilities. The vision of a smart city ensures accessing billions of IoT devices from commonplace. The communication between IoT devices of smart cities demands privacy. Since the sensitive data generated from the smart devices are vulnerable to various attacks. One of the major attacks perform in the IoT network is the Sybil attack, in which an adversary creates multiple identities of a node to harm the network. Blockchain is an emerging technology that can be used to meet the demand for privacy preservation in IoT based smart cities. This paper proposes a Blockchain-based Sybil-secured data transmission (SSDT) IoT framework for smart city applications. The proposed frameworks effectively capture any node which is trying to initiate the Sybil attack as well as provides a secure platform for devices to exchange information with each other. The performance of the proposed Blockchain-based SSDT IoT framework is simulated by designing a Sybil-Secured Data Transmission (SSDT) simulator.
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