Client registration parameters "request_object_signing_alg", "request_object_encryption_alg" and "request_object_encryption_enc" control if provider if client must send signed and encrypted authorization request and what algorithms client is expected to use.
JWT Secured Authorization Request (JAR)
|request||Request object passed by value|
The JWT contains as claims all authorization request parameters, including response_type, client_id, redirect_uri etc. In addition the following JWT parameters are required
Matches client_id of client
Matches issuer identifier