The paper "Enhancing Industrial IoT Network Security through Blockchain Integration" by Yash Bobde, Gokuleshwaran Narayanan, Manas Jati, Raja Soosaimarian Peter Raj, Ivan Cvitić, and Dragan Peraković explores the integration of blockchain technology to enhance the security and trustworthiness of Industrial IoT (IIoT) networks. The authors address the growing security challenges in IIoT, such as data integrity, confidentiality, and access control, which traditional security methods often struggle to overcome. The proposed system leverages a private blockchain gateway to process and classify data based on confidentiality levels, ensuring secure storage in cloud servers or the Interplanetary File System (IPFS). Advanced cryptographic techniques, including ChaCha20-Poly1305 encryption and Zero Knowledge Proof (ZKP), are employed to secure data transmission and authentication. The system also employs a proof of authority (PoA) consensus mechanism, which uses a limited number of trusted validators to create new blocks and validate transactions, enhancing security and efficiency. Key components of the system include sensor nodes for data collection, a private blockchain gateway for data processing and classification, a certificate authority (CA) for secure data transmission, IPFS for decentralized data storage, ZKP for device authorization, and lightweight compression for efficient data transmission. The system's architecture is designed to ensure data integrity, security, and efficient processing, with a focus on real-time applications and limited resource constraints. The paper discusses the system's features, limitations, practical implications, and performance evaluation, highlighting its potential to mitigate vulnerabilities in IIoT networks and advance security and operational efficiency. The authors emphasize the need for continuous innovation and adaptation in IoT security, reflecting the dynamic nature of the field.The paper "Enhancing Industrial IoT Network Security through Blockchain Integration" by Yash Bobde, Gokuleshwaran Narayanan, Manas Jati, Raja Soosaimarian Peter Raj, Ivan Cvitić, and Dragan Peraković explores the integration of blockchain technology to enhance the security and trustworthiness of Industrial IoT (IIoT) networks. The authors address the growing security challenges in IIoT, such as data integrity, confidentiality, and access control, which traditional security methods often struggle to overcome. The proposed system leverages a private blockchain gateway to process and classify data based on confidentiality levels, ensuring secure storage in cloud servers or the Interplanetary File System (IPFS). Advanced cryptographic techniques, including ChaCha20-Poly1305 encryption and Zero Knowledge Proof (ZKP), are employed to secure data transmission and authentication. The system also employs a proof of authority (PoA) consensus mechanism, which uses a limited number of trusted validators to create new blocks and validate transactions, enhancing security and efficiency. Key components of the system include sensor nodes for data collection, a private blockchain gateway for data processing and classification, a certificate authority (CA) for secure data transmission, IPFS for decentralized data storage, ZKP for device authorization, and lightweight compression for efficient data transmission. The system's architecture is designed to ensure data integrity, security, and efficient processing, with a focus on real-time applications and limited resource constraints. The paper discusses the system's features, limitations, practical implications, and performance evaluation, highlighting its potential to mitigate vulnerabilities in IIoT networks and advance security and operational efficiency. The authors emphasize the need for continuous innovation and adaptation in IoT security, reflecting the dynamic nature of the field.