BIDAC: Blockchain-enabled Identity-Based Data Access Control in IoT

Abstract

Considering massive device nodes, strong dynamics, and limited resources of the Internet of Things, mainstream data access control solutions have plaintext transmission problems and may cause single point of failure. In this paper, we propose a blockchain-enabled identity-based data access control in IoT named BIDAC. By using Identity-Based Encryption (IBE) algorithm, the security and trustworthiness of the data can be ensured during the authorization and data-sharing process. With the designed access control smart contracts, access rights can be obtained by gaining private keys, providing fine-grained data access control for the IoT systems. Security analysis of this paper shows that BIDAC can resist passive attack, active attack, and physical attack. By implementing BIDAC on the blockchain, the access control performance shows that the proposed BIDAC has good availability.