Expected Behavior
One of the protocols support by OAuth is Client Assertion as authentication
A client uses an assertion to authenticate to the authorization server's token endpoint by using the "client_assertion_type" and "client_assertion" parameters
https://tools.ietf.org/html/rfc7521#section-6.1
Current Behavior
No Support
Context
This is something supported by jose.nimbus and as consumer and provider of OAuth we want to secure our authentication to the token endpoint using this protocol.
Comment From: jgrandja
Closing as duplicate #6881