Behaviour to retrieve client configuration at runtime

Client configuration is a map whose keys are those documented in OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 1 , those used being:

• "client_id"
• "client_secret": the client secret to authenticate to OAuth2 / OpenID Connect API endpoints when the "token_endpoint_auth_method" is one of:
  • "client_secret_post"
  • "client_secret_basic"
  • "client_secret_jwt" (if a JWK is not used)
• "id_token_encrypted_response_alg"
• "id_token_encrypted_response_enc"
• "id_token_signed_response_alg"
• "jwks": the client's JWKs (must be maps, will be used calling JOSE.JWK.from_map/1)
• "jwks_uri": the client's JWKs URI
• "token_endpoint_auth_method": the client's authentication method for the token endpoint