Authentication using Smart Contracts in a Blockchain

Abstract

A challenge with user authentication using passwords is to ensure that they are kept in a safe storage. The most commonly used approach to achieve this is to have a centralized storage with high security measurements but this puts this storage at high risk of being targeted in an attack. We propose an authentication method using a Smart Contracts in a blockchain as a public key storage to solve this issue. This enables same security standards as traditional authentication, with increased availability and usability. Our results show that this method of authentication is a viable alternative to existing ones.