![]() ![]() A claim might also be referred to as a JWT claim or a JSON Web Token claim.Ĭlaims are name or value pairs that relay facts about the token subject. Since JWTs are used as security tokens, this form of authentication is sometimes called JWT authentication.Ī claim provides assertions about one entity, such as a client application or resource owner, to another entity, such as a resource server. The Microsoft identity platform implements security tokens as JSON Web Tokens (JWTs) that contain claims. When the authorization server receives the refresh token, it issues another access token only if the user is still authorized. If the user access to the app wasn't revoked, it receives a new access token and a new refresh token. An app can provide a refresh token to the authorization server. A refresh token is provided, which is used to refresh the access token when the access token is close to expiring.Īccess tokens are passed to a web API as the bearer token in the Authorization header. An access token is provided, which accesses the application or protected resource. Tokens are valid for only a limited amount of time, so the authorization server frequently provides a pair of tokens. To validate a token, the app verifies the signature by using the authorization server public key to validate that the signature was created using the private key. The authorization server publishes the corresponding public key. The authorization server signs the token with a private key. It's up to the application for which the token was generated, the web app that signed in the user, or the web API being called to validate the token. For information on SAML assertions, see SAML token reference. Many enterprise applications use SAML to authenticate users. To learn more about how the Microsoft identity platform issues ID tokens, see ID tokens in the Microsoft identity platform. ID tokens are used by the client to authenticate the user. They can be sent alongside or instead of an access token. ![]() ID token - ID tokens are sent to the client application as part of an OpenID Connect flow.For more information, see Refresh tokens in the Microsoft identity platform. The client application can then exchange this refresh token for a new access token when needed. Refresh token - Because access tokens are valid for only a short period of time, authorization servers sometimes issue a refresh token at the same time the access token is issued.For more information, see Access tokens in the Microsoft identity platform. Resources validate access tokens to grant access to a client application. The information can be used to access web APIs and other protected resources. It contains information about the user and the resource for which the token is intended. ![]()
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