Підхід до безпеки та організації мереж ІОТ з використанням блокчейн технології

Abstract

The rapid development of the Internet of Things (IoT) lacks a universal security mechanism for devices due to their diversity and hardware limitations. However, employing distributed networks, additional encryption, limiting unused data transmission channels, implementing collective device certification, using digital signatures, and filtering data packets can secure devices against classical attack scenarios. The paper examines the challenges and potential attacks on the security of IoT devices. For optimal security control in traditional networks, the use of software-controlled networks is recommended. Usage of fog computing reduces the risks associated with a central node, but other security risks remain. More comprehensive solution involves integrating blockchain with IoT devices. The paper reviews several existing systems that offer more comprehensive security but still have certain shortcomings, which the authors attempt to address in the proposed model. The proposed IoT network model using blockchain consists of multiple layers - a sensor and low-power device layer and a local blockchain network layer, which are combined into a cluster. Communication between layers is ensured by symmetric and asymmetric encryption, and the network operation rules can be regulated by smart contracts. Additionally, there is interaction between clusters, making the system scalable, decentralized, and secure.