OAuth 1.0 vs. OAuth 2.0: An In-Depth Analysis of Token Handling ,Client Authentication, and Developer Usability

Abstract

OAuth (Open Authorization) is a widely adopted framework that allows third-party applications to access user resources without exposing user credentials. OAuth 1.0 and OAuth 2.0 are the two major versions of the protocol, each with distinct characteristics, advantages, and trade-offs. This paper provides an in-depth comparative analysis of OAuth 1.0 and OAuth 2.0, with particular emphasis on token handling, client authentication, and developer usability. By examining these critical components, the paper aims to provide a comprehensive understanding of how each version operates, the implications for security, and the experience for developers implementing these protocols.