Multi-layer Authentication Scheme Based on Blockchain for Cloud-Edge-End
Jian Wu, Lei Zhang · 2023
Many existing studies focus on mutual authentication between terminal devices and the next hop node, but they often neglect the importance of multi-layer authentication in a cloud-edge-end integrated architecture. This article presents a multi-level IoT node authentication scheme that relies on a two-tier blockchain system to enhance IoT security. This scheme utilizes smart contracts to construct an identity information structure and employs on-chain identity credentials for authentication, effectively preventing privacy data leakage and attacks. The two-tier blockchain consists of a local blockchain and a SmartAuth blockchain, which serve for authentication within the same domain and across domains, respectively. Security analysis demonstrates that the scheme offers high security and performance.