Implementation of Integrated Authentication Service using Blockchain and One Time QR Code for Access Control in U-city Environment

Abstract

This paper proposes an integrated user authentication system that can be used for access control in U-city environment. The proposed integrated authentication system issues an EID capable of acting as an electronic ID to a user based on a smartphone, and verifies and verifies the access to a building or a specific space using the issued EID. Unlike the user authentication using a smart card, it can be used in on / off-line environment because authentication service is provided in web service environment. Based on the issued EID, one-time authentication information is used in the authentication process in the form of One Time QRcode to provide a secure authentication process from security breaches such as retransmission attacks. In addition, the security and security of the network and computing environment have been improved because the user's authentication information is issued and verified in a blockchain-based decentralized system rather than the existing centralized system.