OptionalallowedOptionalexpectedThe expected DPoP nonce value that must appear in the nonce claim of the DPoP proof JWT.
AS implementations SHOULD issue server-provided nonces (via the DPoP-Nonce response
header) and pass the expected value here to prevent pre-generated DPoP proofs from being
reused across requests within the iat window.
See RFC 9449 §8 for the full nonce issuance flow.
The dpop jwt from the access token request
Allowed dpop signing alg values. If not provided any alg values are allowed and it's up to the
verifyJwtCallbackto handle the alg.