Privacy-Preserving Mechanism in Smart Home Using Blockchain

Abstract

The IoT, or Internet of Things has been a major talking point amongst technology enthusiasts in recent years. The internet of thing (IoT) has been emerged and evolved rapidly, making the world's fabric around us smarter and more responsive. The smart home use one such transformation of IoT, which seems to be the wave of the future. However, with the increasing wide adoption of IoT, data security, and privacy concerns about how our data is collected and shared with others, has also risen. To solve these challenges, an approach to data privacy and security in a smart home using blockchain technology is proposed in this paper. We propose authentication scheme that combines attribute-based access control with smart contracts and edge computing to create a secure framework for IoT devices in smart home systems. The edge server adds scalability to the system by offloading heavy processing activities and using a differential privacy method to aggregate data to the cloud securely and privately. We present several aspects of testing and implementing smart contracts, the differential private stochastic gradient descent algorithm, and system architecture and design. We demonstrate the efficacy of our proposed system by fully examining its security and privacy goals in terms of confidentiality, integrity, and availability. Finally, we undertake a performance evaluation to demonstrate the proposed scheme's feasibility and efficiency.

Dynamic Secure Access Control and Data Sharing Through Trusted Delegation and Revocation in a Blockchain-Enabled Cloud-IoT Environment

“…In [33], the authors proposed an approach to preserve privacy by using blockchain. Register contract and access contract were used in a smart contract.…”

A Comprehensive Survey of Security Issues of Smart Home System: “Spear” and “Shields,” Theory and Practice

“…After its initial and evolutionary periods, the smart home industry is now experiencing rapid development, and its market scale is expanding rapidly. In the global market, it is estimated that more than 100 trillion IoT devices will be deployed by 2030, and the global market value is expected to reach $53 billion in 2022, with an average annual growth rate of 21% from 2018 to 2022 [28]. In real-world applications, an SHS is composed of many subsystems, such as security monitoring, environmental control, home facilities management, telemedicine and health monitoring, smart lock, intelligent software service for scenario management, data processing, or paying for household bills for water, electricity and gas.…”

“…Data confidentiality and secure data exchange are critical capabilities for comprehensive security in SHSs. Traditional encryption schemes cannot be directly used in SHSs due to their contextual features and is an option to improve the encryption algorithms or session key generation for access control using differential privacy or identity-or attributebased encryption [28,77]. Another option is to design lightweight steganography to hide secret information and secrets about its source, such as the generator"s profile [115][116][117].…”

“…This scheme improved the verification efficiency of signatures, reduced the required storage space, and reduced the required transmission bandwidth. To construct a security framework for IoT devices in SHSs, Qashlan et al [28] proposed an authentication scheme that combined attribute-based access control with smart contracts and edge computing and used differential privacy to gather data securely into the cloud.…”

Mitigating Security and Privacy issues in IoT Application using Blockchain: A Review

“…In their paper [24], Qashlan and his coauthors present an authentication technique that integrates attribute-based access control, smart contracts, and edge computing to provide a safe basis for IoT devices in smart home systems. The edge server enhances the scalability of the system by outsourcing expensive processing operations and collecting data into the cloud using a differential privacy mechanism.…”