How does token validation work in APIs?

How does token validation work in APIs?

Token validation is a process where the server checks if a token is valid before granting access to resources. It typically involves verifying the token's signature, expiration, and claims.

What types of tokens are commonly used?

Common types of tokens include JSON Web Tokens (JWT), OAuth tokens, and API keys. Each serves different purposes in authentication.

How can I implement token validation in my application?

You can implement token validation by using libraries specific to your programming language that handle token parsing and verification. Ensure you check the token's signature and expiration.

What happens if a token is invalid?

If a token is invalid, the server typically responds with an error message, often a 401 Unauthorized status, indicating that access is denied.