![]() This is a boolean value of whether or not the presented token is currently active. You can also add additional properties in the response if you have additional information about a token that may be useful. Some of the properties in the Introspection spec are specifically for JWT tokens, so we will only cover the basic ones here. Only the “active” property is required, the rest are optional. The Token Introspection Endpoint should respond with a JSON object with the properties listed below. ![]() Token=c1MGYwNDJiYmYxNDFkZjVkOGI0MSAgLQ Token Information Response POST /token_info HTTP/1.1Īuthorization: Basic Y4NmE4MzFhZGFkNzU2YWRhN One way to protect the endpoint is to put it on an internal server that is not accessible from the outside world, or it could be protected with HTTP basic auth. Applications should not be allowed to use this endpoint since the response may contain privileged information that developers should not have access to. It is expected that this endpoint is not made publicly available to developers. The request will be a POST request containing just a parameter named “token”. The two endpoints need to either share a database, or if you have implemented self-encoded tokens, they will need to share the secret. The token introspection endpoint needs to be able to return information about a token, so you will most likely build it in the same place that the token endpoint lives. This enables a resource server to validate access tokens without a network call, by validating the signature and parsing the claims within the structured token itself. The JWT Profile for OAuth 2.0 Access Tokens is a recent RFC that describes a standardized format for access tokens using JWTs. The OAuth 2.0 Token Introspection extension defines a protocol that returns information about an access token, intended to be used by resource servers or other internal servers.Īn alternative to token introspection is to use a structured token format that is recognized by both the authorization server and resource server. In larger systems where the two endpoints are on different servers, this has led to proprietary and non-standard protocols for communicating between the two servers. In some cases, especially with small services, both endpoints are part of the same system, and can share token information internally such as in a database. The OAuth 2.0 core spec doesn’t define a specific method of how the resource server should verify access tokens, just mentions that it requires coordination between the resource and authorization servers. When an OAuth 2.0 client makes a request to the resource server, the resource server needs some way to verify the access token. Short-lived tokens with Long-lived authorizations.User Experience and Alternative Token Issuance Options.OAuth for Browserless and Input-Constrained Devices.Checklist for Server Support for Native Apps.Deleting Applications and Revoking Secrets.Security Considerations for Single-Page Apps.User Experience and Security Considerations.
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