Abstract
Abstract: The Internet of Things (IoT) paradigm is rapidly transforming various industries by enabling the interconnection of billions of devices. However, the pervasive deployment of IoT devices also introduces significant security challenges, including data integrity, confidentiality, and device authentication. Blockchain technology, initially popularized by cryptocurrencies, has emerged as a promising solution to enhance the security of IoT ecosystems. This paper provides a comprehensive review of the integration of blockchain technology into IoT security frameworks. We explore various blockchain-based security mechanisms, including distributed ledger technology, smart contracts, consensus algorithms, and cryptographic techniques, and analyze their effectiveness in addressing IoT security concerns. Furthermore, we discuss the current state-of-the-art implementations, challenges, and future research directions for leveraging blockchain in IoT security.
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