Design and Implementation of a Unified Token-Based Authentication System Using OAuth2 and JWT
This article describes the challenges of fragmented user management in enterprise applications and presents a unified, standardized account management solution based on token authentication, detailing OAuth2 password flow, JWT usage, system architecture, authorization processes, credential renewal, and interface design for secure, scalable access control.
When enterprise applications proliferate, isolated user data creates information silos; a unified, standardized account management system becomes essential for platform evolution.
The article defines key terms (third‑party application, HTTP service, resource owner, user agent, authorization server, resource server) and outlines the shift from session‑based to token‑based authentication in microservice architectures.
Advantages of token authentication include stateless servers, improved performance, and support for mobile and cross‑domain access.
The proposed solution adopts OAuth2 password grant flow and JWT tokens. A typical workflow involves user login, token issuance, client attaching the token to HTTP headers, resource server validation, and token renewal.
System design covers authorization credential acquisition, token renewal, and interface specifications, with diagrams illustrating each step.
Technical choices favor OAuth2 open‑standard and JWT for secure, scalable authentication, aligning with information security best practices.
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