A Reverse Hash Chain Path-Based Access Control Scheme for a Connected Smart Home System

Abstract

As smart home systems increasingly utilize AI technology, a user-friendly and intelligent smart home system becomes increasingly popular. However, a home generally consists of various devices with different capabilities from different vendors. Hence, it is difficult to apply high-performance security solutions to such a smart home system. Recently, although a blockchain is mentioned as an alternative, it needs a high computation resource because of the mining process of proof of work (PoW). Therefore, to apply a blockchain to a smart home system, it is necessary to address such a high resource problem. This article proposes a reverse hash chain as an alternative PoW for a blockchain-based smart home authentication. Since this proposed scheme needs small numbers of hash value computations for PoW, a user can apply a blockchain to a smart home.