Terminology Index
Glossary
2953 terms
ID Token
In OpenID Connect, a token the identity provider issues to prove a user's identity to an application, containing claims about who the user is and how they authenticated. It is how a relying party learns the user is authenticated.
An ID token is a signed token (typically a JWT) issued after authentication in OpenID Connect, carrying claims such as the user's identifier, when and how they authenticated, and the issuer. The application verifies it to confirm the user's identity, distinct from an access token, which authorizes API calls. Understanding the ID token clarifies how federated login conveys authentication, and why verifying its signature and claims matters for security.
Introduced in: Identity and Access Management
Examples
- An app reading an ID token's claims to learn who just signed in.
- Verifying an ID token's signature to trust the identity provider's assertion.
- Distinguishing an ID token (who you are) from an access token (what you can do).
