Decentralized Authentication Systems Using Blockchain

Abstract

Access control is the key to cybersecurity, providing access to digital services with a high level of security. Single points of failure, breach of data, and identity theft are all related to old-fashioned centralized solutions such as passwords to log in and identity providers (e.g., Google, Facebook). Due to its decentralized and tamper-resistant characteristics, blockchain provides an alternative that promises to be efficient. Here, the paper discusses the concept of decentralized authentication based on blockchain and the models of the system such as Decentralized Identifiers (DIDs) and Self-Sovereign Identity (SSI). We examine their design, contrast them to conventional approaches, and draw your attention to performance features of scalability, latency, and security. Lastly, both interoperability and regulatory issues are brought up and future research topics like zero-knowledge proofs and quantum-resistant authentication are mentioned.