Authentication is the process of verifying a user's identity to grant access to resources. Here's a breakdown of common methods:
OAuth 2.0 🔄
- Use case: Third-party access authorization
- Features: Token-based, supports refresh tokens, open standard
- Learn more about OAuth implementation
JSON Web Token (JWT) 🔐
- Structure: Header, payload, signature
- Advantages: Stateless, compact, self-contained
- Explore JWT validation techniques
API Key 🔑
- Placement: Headers or query parameters
- Best practices: Rotate keys regularly, use HMAC for security
- View API key security tips
SAML 📄
- Standards: XML-based, supports single sign-on
- Use case: Enterprise identity federation
- Compare SAML vs OAuth
For deeper insights, check our Authorization Guide to understand how authentication differs from authorization. 🌐