[[_oauth21-support]]
== OAuth 2.1 Support

{project_name} makes it easier for administrators to make sure that their clients are compliant with these specifications:

* https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-10[The OAuth 2.1 Authorization Framework - draft specification]

This compliance means that the {project_name} server will verify the requirements
for the authorization server, which are mentioned in the specifications. {project_name} adapters do not have any specific support for the OAuth 2.1, hence the required validations on the client (application)
side may need to be still done manually or through some other third-party solutions.

=== OAuth 2.1 client profiles

To make sure that your clients are OAuth 2.1 compliant, you can configure Client Policies in your realm as described in the link:{adminguide_link}#_client_policies[{adminguide_name}]
and link them to the global client profiles for OAuth 2.1 support, which are automatically available in each realm. You can use either `oauth-2-1-for-confidential-client` profile for confidential clients or `oauth-2-1-for-public-client` profile for public clients.

NOTE: OAuth 2.1 specification is still a draft and it may change in the future. Hence the {project_name} built-in OAuth 2.1 client profiles can change as well.

NOTE: When using OAuth 2.1 profile for public clients, it is recommended to use DPoP preview feature as described in the link:{adminguide_link}#_dpop-bound-tokens[{adminguide_name}] because DPoP binds an access token and a refresh token together with the public part of a client's key pair. This binding prevents an attacker from using stolen tokens.