A Lightweight Blockchain Based Cybersecurity for IoT environments

Recently, Blockchain (BC) attracts a lot of research's to study their salient features in order to adopt it into various domains. BC promise to address security and privacy preservation issues in a distributed manner and eliminating the centralized concept. However, Internet of Thing (IoT) environments is constricted resources with limited capabilities in terms of; computation, storage, and energy that deter to adopt BC in a straightforward manner due to its intensive computational requirements and bandwidth consumption overhead. To address those issues, this paper introduces a Lightweight Blockchain based Cybersecurity (LBC) for IoT environments. Unlike the Proof of Work (PoS) and Proof of Stake (PoS) in Bitcoins, we aim to mitigate the heavy computational cost that required in a consensus algorithm to meet the IoT requirements. To provide scalability feature to the proposed scheme, Edge Block Manager (EBM) and Aggregation Block Managers (ABM) have been introduced; where EBM aims to overcome the limited capabilities of local IoT resources and manages local BC in centralized manner. While ABM constitute of numerous of EBM to manages the public BC in a distributed manner. Our novel proposed scheme can preserve high throughput and low latency. Obviously, waiting period, verification, and block appending period have been mitigated. Security analysis shows that the proposed scheme is resisted against typical attacks.