Guide to Secure Authorization with OAuth 2.0
What is OAuth? OAuth is an open standard for access delegation. It allows a user to grant a third-party application limited access to their resources (e.g., Google Photos, GitHub repositories) without sharing their credentials (username and password). Instead, OAuth uses tokens to securely manage access. OAuth 1.0: Launched in 2007, it used a signature-based system. It’s now largely obsolete. OAuth 2.0: Introduced in 2012 via RFC 6749, it’s a simpler, more flexible redesign and the focus of this guide. Why Use OAuth? Imagine you want a photo-editing app to access your Google Photos. Without OAuth, you’d share your Google password—risky! OAuth lets you authorize the app to access only your photos, for a limited time, without exposing your credentials. ...