Blockchain-Based Authentication for Secure Data Access Control Measures with an Observation in IoT Device Implementation

Abstract

This paper explores implementing blockchain technology as an access control and identity management system to enhance security and data protection within organizations, particularly in environments with increasing IoT device deployments. The study reviews existing blockchain-based access control models, comparing transaction-based and smart contract-based approaches, highlighting their applicability to distributed and dynamic data environments. A proof-of-concept blockchain was developed using C++ and OpenSSL, focusing on trust-based access control for managing user authentication and authorization in a physical headquarters scenario. The paper also discusses scalability challenges and future directions, including integrating Inter-Planetary File System (IPFS) and Directed Acyclic Graph (DAG) technologies to optimize storage and transaction efficiency in large-scale IoT deployments1. Keywords - Blockchain-Bases Access Control, Efficiency Optimization, Identity Management, IoT Devices, Scalability.