Token-Based Authentication
A method where users authenticate using tokens instead of passwords.
Understanding Token-Based Authentication
Token-Based Authentication is a security mechanism that verifies user identities by issuing cryptographic tokens instead of relying solely on traditional password-based authentication. It is widely used in web applications, APIs, and cloud services to enhance security and user experience.
How Token-Based Authentication Works
User Authentication – The user enters credentials (e.g., username and password).
Token Issuance – Upon successful authentication, the server generates a token (e.g., JWT, OAuth token).
Token Storage – The token is stored on the client-side (browser storage, mobile device, etc.).
Access Validation – For each request, the client includes the token in the HTTP headers.
Token Verification – The server verifies the token’s validity before granting access.
Token Expiry & Renewal – Tokens have expiration times and may require refresh tokens for re-authentication.
Types of Tokens
JSON Web Token (JWT)
A compact and self-contained token format that includes user claims and signature verification.
Commonly used in web applications and APIs.
OAuth Access Tokens
Used in OAuth 2.0 authentication protocols to grant access to protected resources.
Commonly used in Single Sign-On (SSO) and third-party integrations.
Refresh Tokens
Allows users to obtain new access tokens without re-entering credentials.
Enhances user experience by extending session durations.
Session Tokens
Temporary tokens generated for a specific session duration.
Used in web applications for managing logged-in user sessions.