This article explains the OAuth 2.0 protocol, describes its four grant types, focuses on the Authorization Code and Implicit flows, outlines the involved roles, token types, client registration steps, and provides detailed request‑response examples for both grant types.
This article explains the concept of open platforms, the evolution of OAuth 2.0, its core token‑based authorization mechanism, real‑world analogies, and the step‑by‑step Authorization Code grant flow that lets third‑party apps securely access protected resources.
The article surveys authentication from ancient token methods to modern password and session techniques, explains OAuth 2.0 flows and their adaptation for WeChat Mini‑Programs—including access‑token retrieval, simplified client‑credentials grants, and cloud‑call automation—while also previewing future trends such as biometrics, blockchain‑based decentralization, and AI‑driven trust models.
